An official website of the United States government
Here's how you know v
Official websites use .gov
A .gov websites belongs to an official government organization in the United States
Secure .gov website use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Data Access
FTPS from SPDF (not with most browsers)
HTTPS from SPDF
CDAWeb
WebService:
CDAWeb Programmatic Data Access
HAPI: CDAWeb HAPI Server
Polar Visible Imaging System (VIS) Earth Camera Images, Calibrated (E0), 4 min Data
var authors='Frank, Louis, A.; Candey, Robert, M.';
document.write(authors);
(2023).
Polar Visible Imaging System (VIS) Earth Camera Images, Calibrated (E0), 4 min Data.
[Data set].
Space Physics Data Facility.
https://doi.org/10.48322/ma2e-tm75. Accessed on document.write(currentDateStr);.
Note: Proper references, including
Copy BibTeX Citation
or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication.
ResourceID
spase://NASA/NumericalData/POLAR/VIS/EarthCameraCalibrated/PT4M
Description
Instrument Functional Description: The VIS Instrument is a Set of three Low Light Level Cameras. Two of these Cameras share primary and some secondary Optics and are designed to provide Images of the Nighttime Auroral Oval at Visible Wavelengths. A Third Camera is used to monitor the Directions of the Fields-of-View of the Auroral Cameras with respect to the sunlit Earth and return Global Images of the Auroral Oval at Ultraviolet Wavelengths. The VIS Instrumentation produces an Auroral Image of 256 × 256 Pixels approximately every 24 s dependent on the Integration Time and Filter selected. The Fields-of-View of the two Nighttime Auroral Cameras are 5.6 × 6.3° and 2.8 × 3.3° for the Low and Medium Resolution Cameras, respectively. The Medium Resolution Camera was never activated. One or more Earth Camera Images of 256 × 256 Pixels are produced every 5 min, depending on the commanded Mode. The Field-of-View of the Earth Camera is approximately 20 × 20°. See: https://space.physics.uiowa.edu/vis/description.html Reference: Frank, L.A., J.B. Sigwarth, J.D. Craven, J.P. Cravens, J.S. Dolan, M.R. Dvorsky, J.D. Harvey, P.K. Hardebeck, and D. Muller, The Visible Imaging System (VIS) for the Polar Spacecraft, Space Science Review, Vol. 71, pp. 297-328, 1995. Data Set Description: The VIS Earth Camera Data Set comprises all Earth Camera Images for the selected Time Period. Full Coordinate Information is included for Viewer Orientation. In addition, a Rotation Matrix and a Table of Distortion-correcting Look Direction Unit Vectors are provided for the Purpose of calculating Coordinates for every Pixel. To facilitate viewing of the Images, a Mapping of Pixel Value to a recommended Color Table based on the Characteristics of the selected Filter will be included with each Image. A Relative Intensity Scale is provided through an Uncompressed Count Table. Approximate Intensity Levels in kiloRayleighs are given in an Intensity Table. For detailed Information on Intensities, see Sensitivities_and_Intensities.txt at https://cdaweb.gsfc.nasa.gov/Polar_VIS_docs/SENSITIVITIES_AND_INTENSITIES.TXT. Supporting Software is available at: https://space.physics.uiowa.edu/vis/software/ Included is an IDL Program that displays the Images with the recommended Color Bar, provides approximate Intensities, Coordinate Data for each Pixel, and includes multiple Options for Image Manipulation.
Metadata Rights
CC0-1.0:
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license.
View XML |
Edit
Details
Version:2.7.1
NumericalData
ResourceID
spase://NASA/NumericalData/POLAR/VIS/EarthCameraCalibrated/PT4M
NamingAuthority
NASA
ResourceType
NumericalData
ResourceHeader
ResourceName
Polar Visible Imaging System (VIS) Earth Camera Images, Calibrated (E0), 4 min Data
DOI
https://doi.org/10.48322/ma2e-tm75
ReleaseDate
2025-12-04 13:31:03Z
RevisionHistory
RevisionEvent
ReleaseDate
2021-04-27 15:38:11
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2023-07-30 12:34:56.789
Note
Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727
RevisionEvent
ReleaseDate
2025-09-15 12:34:56.789
Note
Revised ObservedRegion and AccessInformation. JMW
RevisionEvent
ReleaseDate
2025-10-03 10:48:57Z
Note
Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB
RevisionEvent
ReleaseDate
2025-12-04 13:31:03Z
Note
Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB
Description
Instrument Functional Description: The VIS Instrument is a Set of three Low Light Level Cameras. Two of these Cameras share primary and some secondary Optics and are designed to provide Images of the Nighttime Auroral Oval at Visible Wavelengths. A Third Camera is used to monitor the Directions of the Fields-of-View of the Auroral Cameras with respect to the sunlit Earth and return Global Images of the Auroral Oval at Ultraviolet Wavelengths. The VIS Instrumentation produces an Auroral Image of 256 × 256 Pixels approximately every 24 s dependent on the Integration Time and Filter selected. The Fields-of-View of the two Nighttime Auroral Cameras are 5.6 × 6.3° and 2.8 × 3.3° for the Low and Medium Resolution Cameras, respectively. The Medium Resolution Camera was never activated. One or more Earth Camera Images of 256 × 256 Pixels are produced every 5 min, depending on the commanded Mode. The Field-of-View of the Earth Camera is approximately 20 × 20°. See: https://space.physics.uiowa.edu/vis/description.html Reference: Frank, L.A., J.B. Sigwarth, J.D. Craven, J.P. Cravens, J.S. Dolan, M.R. Dvorsky, J.D. Harvey, P.K. Hardebeck, and D. Muller, The Visible Imaging System (VIS) for the Polar Spacecraft, Space Science Review, Vol. 71, pp. 297-328, 1995. Data Set Description: The VIS Earth Camera Data Set comprises all Earth Camera Images for the selected Time Period. Full Coordinate Information is included for Viewer Orientation. In addition, a Rotation Matrix and a Table of Distortion-correcting Look Direction Unit Vectors are provided for the Purpose of calculating Coordinates for every Pixel. To facilitate viewing of the Images, a Mapping of Pixel Value to a recommended Color Table based on the Characteristics of the selected Filter will be included with each Image. A Relative Intensity Scale is provided through an Uncompressed Count Table. Approximate Intensity Levels in kiloRayleighs are given in an Intensity Table. For detailed Information on Intensities, see Sensitivities_and_Intensities.txt at https://cdaweb.gsfc.nasa.gov/Polar_VIS_docs/SENSITIVITIES_AND_INTENSITIES.TXT. Supporting Software is available at: https://space.physics.uiowa.edu/vis/software/ Included is an IDL Program that displays the Images with the recommended Color Bar, provides approximate Intensities, Coordinate Data for each Pixel, and includes multiple Options for Image Manipulation.
Acknowledgement
L.A. Frank
PublicationInfo
Authors
Frank, Louis, A.; Candey, Robert, M.
PublicationDate
2023-01-01 00:00:00
PublishedBy
Space Physics Data Facility
Contacts
Role
Person
StartDate
StopDate
Note
1.
FormerPI
spase://SMWG/Person/Louis.A.Frank
2.
GeneralContact
spase://SMWG/Person/Robert.M.Candey
3.
MetadataContact
spase://SMWG/Person/Lee.Frost.Bargatze
InformationURL
Name
Scientific Description of the VIS Instrument
URL
https://space.physics.uiowa.edu/vis/description.html
Description
Scientific Description of the VIS Instrument
InformationURL
Name
Instrument Sensitivity and Method of Calculating Intensities
URL
https://cdaweb.gsfc.nasa.gov/Polar_VIS_docs/SENSITIVITIES_AND_INTENSITIES.TXT
Description
Sensitivity and Intensity Calculation
InformationURL
Name
Method used by Polar VIS to calculate Coordinates
URL
https://cdaweb.gsfc.nasa.gov/Polar_VIS_docs/Coordinate_Calculation.txt
Description
Polar VIS Coordinate Calculation
InformationURL
Name
Link to Scientific Analysis Software
URL
https://space.physics.uiowa.edu/vis/software/
Description
Scientific Analysis Software
PriorIDs
spase://VSPO/NumericalData/POLAR/VIS/EarthCameraCalibrated/PT4M
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
FTPS from SPDF (not with most browsers)
URL
ftps://spdf.gsfc.nasa.gov/pub/data/polar/vis/vis_earth-camera-calibrated/
Description
Access to Data in CDF Format via ftp from SPDF
AccessURL
Name
HTTPS from SPDF
URL
https://spdf.gsfc.nasa.gov/pub/data/polar/vis/vis_earth-camera-calibrated/
Description
Access to Data in CDF Format via http from SPDF
AccessURL
Name
CDAWeb
URL
https://cdaweb.gsfc.nasa.gov/index.html
ProductKey
PO_VIS_EARTH-CAMERA-CALIBRATED
Description
Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
Format
CDF
Encoding
None
AccessDirectoryTemplate
https://cdaweb.gsfc.nasa.gov/pub/data/polar/vis/vis_earth-camera-calibrated/$Y
AccessFilenameTemplate
po_vis_earth-camera-calibrated_$Y$m$d$H_$v.cdf
Acknowledgement
L.A. Frank. Please acknowledge the Data Providers and CDAWeb when using these Data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF
Availability
Online
AccessRights
Open
AccessURL
Name
CDAWeb Programmatic Data Access
URL
https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/PO_VIS_EARTH-CAMERA-CALIBRATED/clientLibraryExample/
Style
WebService
ProductKey
PO_VIS_EARTH-CAMERA-CALIBRATED
Description
Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS.
Format
Binary
Acknowledgement
L.A. Frank. Please acknowledge the Data Providers and CDAWeb when using these Data.
AccessInformation
RepositoryID
spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb
Availability
Online
AccessRights
Open
RightsList
Rights
SchemeURI
https://spdx.org/licenses/
RightsIdentifierScheme
SPDX
RightsIdentifier
CC0-1.0
RightsURI
https://spdx.org/licenses/CC0-1.0.html
RightsName
Creative Commons Zero v1.0 Universal
Note
CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products
AccessURL
Name
CDAWeb HAPI Server
URL
https://cdaweb.gsfc.nasa.gov/hapi
Style
HAPI
ProductKey
PO_VIS_EARTH-CAMERA-CALIBRATED
Description
Web Service to this product using the HAPI interface.
Format
CSV
Acknowledgement
L.A. Frank. Please acknowledge the Data Providers and CDAWeb when using these Data.
ProcessingLevel
Calibrated
InstrumentIDs
spase://SMWG/Instrument/POLAR/VIS
MeasurementType
ImageIntensity
TemporalDescription
TimeSpan
StartDate
1996-04-30 00:00:00.000
StopDate
2008-04-16 07:59:59.999
Cadence
PT4M
ObservedRegion
Earth.Magnetosphere
ObservedRegion
Earth.Magnetosphere.Polar
ObservedRegion
Earth.NearSurface
ObservedRegion
Earth.NearSurface.AuroralRegion
ObservedRegion
Earth.NearSurface.Plasmasphere
ObservedRegion
Earth.NearSurface.Ionosphere
ObservedRegion
Earth.NearSurface.PolarCap
ObservedRegion
Earth.Magnetosphere.RadiationBelt
Parameter #1
Name
Epoch, Image Center Time
ParameterKey
Epoch
Description
Epoch Time, Image Center Time, The Time assigned to an Image is the Center Time of the Integration Period within a Resolution of 50 ms
Caveats
This parameter exhibits an increasing monotonic progression.
Cadence
PT4M
Units
ms
UnitsConversion
1.0e-3>s
RenderingHints
AxisLabel
Epoch
ScaleMin
6.2861421819904e+13
ScaleMax
6.3776657019903e+13
ValidMin
01-Jan-1992 00:00:00.000
ValidMax
31-Dec-2020 23:59:59.999
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #2
Name
Image Center Time
Set
Time series defined by using: EPOCH
ParameterKey
Time_PB5
Description
Time PB5, Image Center Time
Cadence
PT4M
Structure
Size
3
Element
Name
Year
Index
1
Units
year
ValidMin
1992
ValidMax
2020
RenderingHints
AxisLabel
year
ScaleMin
1992
ScaleMax
2020
Element
Name
Day of Year
Index
2
Units
d
ValidMin
1
ValidMax
366
RenderingHints
AxisLabel
day
ScaleMin
1
ScaleMax
366
Element
Name
Msec of Day
Index
3
Units
ms
ValidMin
0
ValidMax
86399999
RenderingHints
AxisLabel
msec
ScaleMin
0
ScaleMax
86399999
FillValue
-2147483648
Support
SupportQuantity
Temporal
Parameter #3
Name
Raw Ultraviolet Images in QLC Counts, Image
Set
Time series defined by using: EPOCH
ParameterKey
Image_Counts_Raw
Description
Uncleaned 256 × 256 Ultraviolet Image in Quasi-Logarithmically Compressed, QLC, Counts. Image Pixel Counts Range from 0 to 255. They are stored in a Two-Dimensional 256 × 256 byte Array. Images from the Earth Camera (Sensor 0) are conventionally displayed with Row 1 at the Top, Row 256 at the Bottom, Column 1 on the Left, and Column 256 on the Right. The Conventional Image Display for the Low Resolution Camera (Sensor 1) is rotated 180° so that the Row 1-Column 1 Pixel is at the Lower Right Corner and the Row 256-Column 256 Pixel is at the Upper Left Corner. When displayed in this Manner, the Spacecraft Spin Axis is oriented to the Right in the Display, the X-component is defined as the Center of the Image Look Direction, and the Y-component is the Cross Product of the Spin Axis and the Look Direction.
Caveats
Image_Counts_Raw contains the unprocessed displayable Image. The Counts have been Quasi-Logarithmically Compressed by the instrument. Approximate uncompressed value for Image_Counts(i,j) Intens_Table ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value.
Cadence
PT4M
RenderingHints
AxisLabel
Raw UV Images
ValueFormat
I3
Structure
Size
256 256
FillValue
255
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #4
Name
Cleaned Ultraviolet Images in QLC Counts, Image
Set
Time series defined by using: EPOCH
ParameterKey
Image_Counts_Clean
Description
Cleaned and Filtered 256 × 256 Ultraviolet Image in Quasi-Logarithmically Compressed, QLC, Counts. These are Image Pixel Counts that have been calibrated using the following Routines. For the Earth Camera: Horizontal Smooth EC 4 if the Modified Julian Date (MJD) is greater than 3429 (Correction required after an Event in 2005), Horizontal Smooth EC 6 if the Modified Julian Date (MJD) is greater than 4307 (Correction required after an Event in 2007), Subtract Cosmic Rays, Subtract Slopes (Adjusts for Biases across the CCD), Remove Weave (Corrects for Interference from Low Resolution Camera), Flat Field (Corrects for other Characteristics of the CCD) [Note: depending on Viewing Geometry, not all Irregularities can be fixed completely; in particular, a wide Diagonal Stripe may still be Visible], Dayglow Subtract, Nightglow Minimum. For the Low Resolution Camera: Subtract Cosmic Rays, Subtract Slopes, Flat Field, Smooth Filter. The Data Structure is the same as the Raw Image Counts.
Caveats
Image_Counts contains the cleaned displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value.
Cadence
PT4M
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
I3
Structure
Size
256 256
FillValue
255
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #5
Name
Geographic Grid Overlay in QLC Counts, Image
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_ImageO
Description
Image Display with Geographic Grid Overlay in Quasi-Logarithmically Compressed, QLC, Counts, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: Image_Counts_Clean, Geo_Lat, Geo_Lon.
Cadence
PT4M
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
I3
Structure
Size
256 256
FillValue
255
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #6
Name
Geographic Polar Projection in QLC Counts, Image
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_ImageP
Description
Image Display, Azimuthal Projection to Geographic in Quasi-Logarithmically Compressed, QLC, Counts, Fixed Sun Orientation, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: Image_Counts_Clean, Geo_Lat, Geo_Lon, Intens_Table.
Cadence
PT4M
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
I3
Structure
Size
256 256
FillValue
255
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #7
Name
Magnetic Local Time (MLT) Invariant Latitude Projection in QLC Counts, Image
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_ImageM
Description
Image Display, Azimuthal Projection to Magnetic Local Time and Invariant Latitude in Quasi-Logarithmically Compressed, QLC, Counts, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: Image_Counts_Clean, Geo_Lat, Geo_Lon.
Cadence
PT4M
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
I3
Structure
Size
256 256
FillValue
255
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #8
Name
Cleaned Ultraviolet Intensity in QLC Counts, Movie
Set
Time series defined by using: EPOCH
ParameterKey
Movie_Image
Description
Movie Display of Cleaned Ultraviolet Images in Quasi-Logarithmically Compressed, QLC, Counts
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: Image_Counts_Clean.
Cadence
PT4M
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
I3
Structure
Size
256 256
FillValue
255
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #9
Name
Geographic Grid Overlay in QLC Counts, Movie
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_MovieO
Description
Movie Display, with Geographic Grid Overlay in Quasi-Logarithmically Compressed, QLC, Counts, use Short Time Spans, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: Image_Counts_Clean, Geo_Lat, Geo_Lon.
Cadence
PT4M
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
I3
Structure
Size
256 256
FillValue
255
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #10
Name
Geographic Polar Projection in QLC Counts, Movie
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_MovieP
Description
Movie Display, Azimuthal Projection to Geographic in Quasi-Logarithmically Compressed, QLC, Counts Fixed Sun Orientation, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: Image_Counts_Clean, Geo_Lat, Geo_Lon, Intens_Table.
Cadence
PT4M
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
I3
Structure
Size
256 256
FillValue
255
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #11
Name
Magnetic Local Time (MLT) Invariant Latitude Projection in QLC Counts, Movie
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_MovieM
Description
Movie Display, Azimuthal Projection to Magnetic Local Time and Invariant Latitude in Quasi-Logarithmically Compressed, QLC, Counts, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: Image_Counts_Clean, Geo_Lat, Geo_Lon.
Cadence
PT4M
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
I3
Structure
Size
256 256
FillValue
255
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #12
Name
Cleaned, Filtered Ultraviolet Intensity, Image
Set
Time series defined by using: EPOCH
ParameterKey
IImage_Counts
Description
Cleaned and Filtered Ultraviolet Images. These are Image Pixel Counts that have been calibrated using the following Routines. For the Earth Camera: Horizontal Smooth EC 4 if the Modified Julian Date (MJD) is greater than 3429 (Correction required after an Event in 2005), Horizontal Smooth EC 6 if the Modified Julian Date (MJD) is greater than 4307 (Correction required after an Event in 2007), Subtract Cosmic Rays, Subtract Slopes (Adjusts for Biases across the CCD), Remove Weave (Corrects for Interference from Low Resolution Camera), Flat Field (Corrects for other Characteristics of the CCD) [Note: depending on Viewing Geometry, not all Irregularities can be fixed completely; in particular, a wide Diagonal Stripe may still be Visible], Dayglow Subtract, Nightglow Minimum. For the Low Resolution Camera: Subtract Cosmic Rays, Subtract Slopes, Flat Field, Smooth Filter. The Data Structure is the same as the Raw Image Counts.
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value.
Cadence
PT4M
Units
kR
UnitsConversion
1.256637e8>(m^2 s sr)^-1
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #13
Name
Geographic Grid Overlay, Image
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_ImageO_kRay
Description
Image Display with Geographic Grid Overlay, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: IImage_Counts, Geo_Lat, Geo_Lon.
Cadence
PT4M
Units
kR
UnitsConversion
1.256637e8>(m^2 s sr)^-1
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #14
Name
Geographic Polar Projection, Image
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_ImageP_kRay
Description
Image Display, Azimuthal Projection to Geographic, Fixed Sun Orientation, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: IImage_Counts, Geo_Lat, Geo_Lon, Intens_Table.
Cadence
PT4M
Units
kR
UnitsConversion
1.256637e8>(m^2 s sr)^-1
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #15
Name
Magnetic Local Time (MLT) Invariant Latitude Projection, Image
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_ImageM_kRay
Description
Image Display, Azimuthal Projection to Magnetic Local Time and Invariant Latitude, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: IImage_Counts, Geo_Lat, Geo_Lon.
Cadence
PT4M
Units
kR
UnitsConversion
1.256637e8>(m^2 s sr)^-1
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #16
Name
Cleaned Ultraviolet Intensity, Movie
Set
Time series defined by using: EPOCH
ParameterKey
Movie_Image_kRay
Description
Movie Display of Cleaned Ultraviolet Images
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: IImage_Counts.
Cadence
PT4M
Units
kR
UnitsConversion
1.256637e8>(m^2 s sr)^-1
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #17
Name
Geographic Grid Overlay, Movie
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_MovieO_kRay
Description
Movie Display with Geographic Grid Overlay, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: IImage_Counts, Geo_Lat, Geo_Lon.
Cadence
PT4M
Units
kR
UnitsConversion
1.256637e8>(m^2 s sr)^-1
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #18
Name
Geographic Polar Projection, Movie
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_MovieP_kRay
Description
Movie Display, Azimuthal Projection to Geographic, Fixed Sun Orientation, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: IImage_Counts, Geo_Lat, Geo_Lon, Intens_Table.
Cadence
PT4M
Units
kR
UnitsConversion
1.256637e8>(m^2 s sr)^-1
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #19
Name
Magnetic Local Time (MLT) Invariant Latitude Projection, Movie
Set
Time series defined by using: EPOCH
ParameterKey
Mapped_MovieM_kRay
Description
Movie Display, Azimuthal Projection to Magnetic Local Time and Invariant Latitude, use Short Time Spans
Caveats
Image_Counts contains the displayable Image. The Counts have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1). Approximate Intensity in kR is Intens_Table(Image_Counts(i,j)+1). The Appearance of the actual Count Value 255 is rare. When displaying an Image, it works best to use the Fill Value as an Overflow (i.e., brightest) Value. This parameter is virtual. It is calculated by calling the function ALTERNATE_VIEW with the following input parameters: IImage_Counts, Geo_Lat, Geo_Lon.
Cadence
PT4M
Units
kR
UnitsConversion
1.256637e8>(m^2 s sr)^-1
RenderingHints
AxisLabel
Cleaned UV Intensity
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Wave
WaveType
Electromagnetic
Qualifier
Array
WaveQuantity
Intensity
Parameter #20
Name
Sensor Number
ParameterKey
Sensor
Description
Sensor Number: 0=Earth Camera, 1=Low Resolution Camera, 2=Medium Resolution Camera (never activated)
Cadence
PT4M
RenderingHints
AxisLabel
Sensor#
ValueFormat
I1
ScaleMin
0
ScaleMax
2
ValidMin
0
ValidMax
2
FillValue
255
Support
SupportQuantity
Other
Parameter #21
Name
Integration Time (Half)
Set
Time series defined by using: EPOCH
ParameterKey
Int_Time_Half
Description
Half of the Length of the Integration Period for the Image measured in ms.
Cadence
PT4M
Units
ms
UnitsConversion
1.0e-3>s
RenderingHints
AxisLabel
Int_Time/2
ValueFormat
F7.0
ScaleMin
0.0
ScaleMax
300000.0
ValidMin
0.0
ValidMax
300000.0
FillValue
-1.0e+31
Support
SupportQuantity
Temporal
Parameter #22
Name
Filter Number and Peak Wavelength (Å)
Set
Time series defined by using: EPOCH
ParameterKey
Filter
Description
Twelve Filters are available for Visible Imaging. The Filter Number, 1-12, is given here. Ultraviolet Imaging is done with one Filter only, which is designated here as Filter Number 0. In Addition, the Peak Wavelength is given in Angstroms for each selected Filter. For detailed Information on Filter Characteristics, see the Text in the Sensitivities_and_Intensities.txt File.
Caveats
Filters #1-12 are Visible Wavelengths, Filter #0 is Ultraviolet for Earth Camera Images
Cadence
PT4M
Structure
Size
2
Element
Name
Filter#
Index
1
ValidMin
0
ValidMax
12
RenderingHints
AxisLabel
number
ScaleMin
0
ScaleMax
12
Element
Name
Wavelength
Index
2
Units
A
ValidMin
1360
ValidMax
7320
RenderingHints
AxisLabel
Angstroms
ScaleMin
1360
ScaleMax
7320
FillValue
-2147483648
Mixed
MixedQuantity
Other
Parameter #23
Name
Presumed Altitude of Emissions
Set
Time series defined by using: EPOCH
ParameterKey
AltF
Description
Presumed Altitude of Emissions - The presumed Altitude of the Emissions seen in the Image varies with the Characteristics of the Filter used.
Cadence
PT4M
Units
km
UnitsConversion
1.0e3>m
RenderingHints
AxisLabel
Alt
ValueFormat
F6.2
ScaleMin
0.0
ScaleMax
300.0
ValidMin
0.0
ValidMax
300.0
FillValue
-1.0e+31
Support
SupportQuantity
Positional
Parameter #24
Name
Platform Pitch Angle
Set
Time series defined by using: EPOCH
ParameterKey
PPitch
Description
Platform Pointing Angle from Nadir - This is the Platform Pointing Angle of Rotation around the Spin Axis measured from Nadir.
Caveats
Platform Angle of Rotation around Spin Axis, measured from Nadir in Tenths of degrees
Cadence
PT4M
Units
10°
UnitsConversion
0.00174532925>rad
RenderingHints
AxisLabel
Platform Pitch
ValueFormat
I5
ScaleMin
-1800
ScaleMax
1800
ValidMin
-1800
ValidMax
1800
FillValue
-2147483648
Support
SupportQuantity
Positional
Parameter #25
Name
Geographic Latitude Grid
Set
Time series defined by using: EPOCH
ParameterKey
Geo_Lat
Description
Geographic Latitude Grid, provided for each Pixel
Caveats
Geographic N. Latitude for Pixel Values
Cadence
PT4M
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEO
RenderingHints
AxisLabel
N Lat
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #26
Name
Geographic Longitude Grid
Set
Time series defined by using: EPOCH
ParameterKey
Geo_Lon
Description
Geographic Longitude Grid, provided for each Pixel
Caveats
Geographic E. Longitude for Pixel Values
Cadence
PT4M
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEO
RenderingHints
AxisLabel
N Lat
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #27
Name
Right Ascension, GCI Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
Ra
Description
Right Ascension, Geocentric Inertial, GCI, Coordinates, provided for each Pixel
Caveats
GCI Right Ascension for Pixel Values
Cadence
PT4M
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEI
RenderingHints
AxisLabel
Right Ascension
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.AzimuthAngle
SupportQuantity
Positional
Parameter #28
Name
Declination Angle, GCI Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
Dec
Description
Declination Angle, Geocentric Inertial, GCI, Coordinates, provided for each Pixel
Caveats
GCI Declination for Pixel Values
Cadence
PT4M
Units
°
UnitsConversion
0.0174532925>rad
CoordinateSystem
CoordinateRepresentation
Spherical
CoordinateSystemName
GEI
RenderingHints
AxisLabel
Declination
ValueFormat
F6.2
Structure
Size
256 256
FillValue
-1.0e+31
Support
Qualifier
DirectionAngle.ElevationAngle
SupportQuantity
Positional
Parameter #29
Name
Altitude at Line-of-Sight
Set
Time series defined by using: EPOCH
ParameterKey
ALTLS
Description
Altitude at Line-of-Sight - The Altitude along Tangent to Line-of-Sight, provided for each Pixel
Caveats
Altitude at Line-of-Sight for Pixel Values
Cadence
PT4M
Units
km
UnitsConversion
1.0e3>m
CoordinateSystem
CoordinateRepresentation
Cylindrical
CoordinateSystemName
GEI
RenderingHints
ValueFormat
F8.1
Structure
Size
256 256
FillValue
-1.0e+31
Support
Qualifier
Component.K
SupportQuantity
Positional
Parameter #30
Name
Earth Pointing Flag
ParameterKey
On_Earth
Description
Earth Pointing Flag: 0=Off Earth, 1=On Earth
Caveats
Earth Pointing Flag for Pixel Values
Cadence
PT4M
RenderingHints
AxisLabel
On Earth
ValueFormat
I1
Structure
Size
256 256
FillValue
255
Support
SupportQuantity
Other
Parameter #31
Name
Spacecraft Position Vector, GCI Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
SC_Pos_GCI
Description
Spacecraft Position Vector, Geocentric Inertial, GCI, Coordinates - The Spacecraft Position Vectors are for the Image Center Time.
Cadence
PT4M
Units
km
UnitsConversion
1.0e3>m
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GEI
RenderingHints
ValueFormat
F8.1
ScaleMin
-75000.0
ScaleMax
75000.0
Structure
Size
3
Element
Name
X comp
Index
1
RenderingHints
AxisLabel
X comp
Element
Name
Y comp
Index
2
RenderingHints
AxisLabel
Y comp
Element
Name
Z comp
Index
3
RenderingHints
AxisLabel
Z comp
ValidMin
-75000.0
ValidMax
75000.0
FillValue
-1.0e+31
Support
Qualifier
Vector
SupportQuantity
Positional
Parameter #32
Name
Spacecraft Velocity Vector, GCI Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
SC_Vel_GCI
Description
Spacecraft Velocity Vector, Geocentric Inertial, GCI, Coordinates - The Spacecraft Velocity Vectors are for the Image Center Time.
Cadence
PT4M
Units
km/s
UnitsConversion
1.0e3>m/s
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GEI
RenderingHints
ValueFormat
F8.4
ScaleMin
-12.0
ScaleMax
12.0
Structure
Size
3
Element
Name
X comp
Index
1
RenderingHints
AxisLabel
X comp
Element
Name
Y comp
Index
2
RenderingHints
AxisLabel
Y comp
Element
Name
Z comp
Index
3
RenderingHints
AxisLabel
Z comp
ValidMin
-12.0
ValidMax
12.0
FillValue
-1.0e+31
Support
Qualifier
Vector
SupportQuantity
Positional
Parameter #33
Name
Spacecraft Spin Axis Unit Vector, GCI Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
SC_SpinV_GCI
Description
Spacecraft Spin Axis Unit Vector, Geocentric Inertial, GCI, Coordinates
Cadence
PT4M
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GEI
RenderingHints
ValueFormat
F7.4
ScaleMin
-1.0
ScaleMax
1.0
Structure
Size
3
Element
Name
Spin X
Index
1
RenderingHints
AxisLabel
X(norm)
Element
Name
Spin Y
Index
2
RenderingHints
AxisLabel
Y(norm)
Element
Name
Spin Z
Index
3
RenderingHints
AxisLabel
Z(norm)
ValidMin
-1.0
ValidMax
1.0
FillValue
-1.0e+31
Support
Qualifier
Vector
SupportQuantity
Positional
Parameter #34
Name
Rotation Matrix, Image Coordinates to GCI Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
Rotatn_Matrix
Description
Coordinate System Rotation Matrix, Image Coordinates to Geocentric Inertial, GCI, Coordinates - The Rotation Matrix may be used with the Look Direction Vector Table to obtain Pointing Vectors in GCI Coordinates for each Pixel. The Resulting Vectors may be used to calculate Coordinates for the observed Positions of the Pixels. The General Method used is described below in the Coordinate_Calculation.txt File. Column 1 Labels from MATRX_COLUMNS: ["X axis","X axis","X axis"] Column 2 Labels from NORM_CART: ["X(norm)","X(norm)","X(norm)"]
Caveats
X Component is Look Direction, Y Component is the Spin Axis cross X
Cadence
PT4M
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GEI
RenderingHints
ValueFormat
F7.4
Structure
Size
3 3
FillValue
-1.0e+31
Support
Qualifier
Tensor
SupportQuantity
Other
Parameter #35
Name
Earth Camera Look Directions
ParameterKey
Look_Dir_Vctr_EC
Description
Look Direction Unit Vectors for the Earth Camera - The Rotation Matrix may be used with the Look Direction Vector Table to obtain Pointing Vectors in GCI Coordinates for each Pixel. The Resulting Vectors may be used to calculate Coordinates for the observed Positions of the Pixels. The General Method used is described below in the Coordinate_Calculation.txt File.
Cadence
PT4M
RenderingHints
AxisLabel
Look Vectors
ValueFormat
F7.4
Structure
Size
3 256 256
FillValue
-1.0e+31
Support
SupportQuantity
Other
Parameter #36
Name
Zenith Angle of Center Line
Set
Time series defined by using: EPOCH
ParameterKey
V_Zenith
Description
Zenith Angle of Center Line-of-Sight at Intersection with Earth - This is the Angle between the Geocentric Vector through the observed Point, assuming the Presumed Altitude of Emissions and the Reverse of the Image Center Line-of-Sight Vector.
Cadence
PT4M
Units
°
UnitsConversion
0.0174532925>rad
RenderingHints
AxisLabel
Zenith
ValueFormat
F6.2
ScaleMin
-90.0
ScaleMax
90.0
ValidMin
-90.0
ValidMax
90.0
FillValue
-1.0e+31
Support
SupportQuantity
Positional
Parameter #37
Name
Sun Direction Unit Vector, GCI Coordinates
Set
Time series defined by using: EPOCH
ParameterKey
Sun_Vctr
Description
Sun Direction Unit Vector, Geocentric Inertial, GCI, Coordinates
Cadence
PT4M
CoordinateSystem
CoordinateRepresentation
Cartesian
CoordinateSystemName
GEI
RenderingHints
ValueFormat
F7.4
ScaleMin
-1.0
ScaleMax
1.0
Structure
Size
3
Element
Name
Sun X
Index
1
RenderingHints
AxisLabel
X(norm)
Element
Name
Sun Y
Index
2
RenderingHints
AxisLabel
Y(norm)
Element
Name
Sun Z
Index
3
RenderingHints
AxisLabel
Z(norm)
ValidMin
-1.0
ValidMax
1.0
FillValue
-1.0e+31
Support
Qualifier
Vector
SupportQuantity
Positional
Parameter #38
Name
Solar Zenith Angle at Center Line/Earth Intersection
Set
Time series defined by using: EPOCH
ParameterKey
S_Zenith
Description
Solar Zenith Angle at Intersection of Center Line-of-Sight with Earth - This is the Angle of the Sun from Zenith at the observed Point of the Center Line-of-Sight, assuming the Altitude given by the Presumed Altitude of Emission
Cadence
PT4M
Units
°
UnitsConversion
0.0174532925>rad
RenderingHints
AxisLabel
Solar Zenith
ValueFormat
F7.2
ScaleMin
-180.0
ScaleMax
180.0
ValidMin
-180.0
ValidMax
180.0
FillValue
-1.0e+31
Support
SupportQuantity
Positional
Parameter #39
Name
RGB Color Lookup Table
ParameterKey
RGBColorTable
Description
RGB Color Lookup Table - This is the recommended Color Table to be used with the Upper and Lower Color Limits.
Caveats
RGBColorTable should be remapped for displaying an Image using the low and high Limits given for each Image in Limit_Lo and Limit_Hi. Image_Counts Count Values less than Limit_Lo use the Color at Table Position 1. Count Values greater than Limit_Hi use the Color at Table Position 256. For Count Values greater than or equal to Limit_Lo and less than or equal to Limit_Hi, the Table Position is (Count-Limit_Lo)/(Limit_Hi-Limit_Lo) and#215; 255 + 1. At the selected Table Position C, the Color Components are Red at RGBColorTable(1,C), Green at RGBColorTable(2,C), and Blue at RGBColorTable(3,C).
Cadence
PT4M
RenderingHints
AxisLabel
Color Level
ValueFormat
I3
Structure
Size
3 256
FillValue
-32768
Support
SupportQuantity
Other
Parameter #40
Name
Color Limit, Lower
Set
Time series defined by using: EPOCH
ParameterKey
Limit_Lo
Description
Lower Limit for remapping Color Table to Pixel Range - The Low and High Color Limits are recommended for remapping the Color Table Entries, as follows: For Pixel Values less than the Low Limit, use the Color at Table Position 1. For Pixel Values greater than or equal to the Low Limit and less than or equal to the High Limit, use the Color at Table Position (pix-low)/(high-low) × 255 + 1. For Pixel Values greater than the High Limit, use the Color at Table Position 256.
Cadence
PT4M
RenderingHints
AxisLabel
Color Limit Low
ValueFormat
I3
ScaleMin
0
ScaleMax
255
ValidMin
0
ValidMax
255
FillValue
-32768
Support
SupportQuantity
Other
Parameter #41
Name
Color Limit, Upper
Set
Time series defined by using: EPOCH
ParameterKey
Limit_Hi
Description
Upper Limit for remapping Color Table to Pixel Range - The Low and High Color Limits are recommended for remapping the Color Table Entries, as follows: For Pixel Values less than the Low Limit, use the Color at Table Position 1. For Pixel Values greater than or equal to the Low Limit and less than or equal to the High Limit, use the Color at Table Position (pix-low)/(high-low) × 255 + 1. For Pixel Values greater than the High Limit, use the Color at Table Position 256.
Cadence
PT4M
RenderingHints
AxisLabel
Color Limit High
ValueFormat
I3
ScaleMin
0
ScaleMax
255
ValidMin
0
ValidMax
255
FillValue
-32768
Support
SupportQuantity
Other
Parameter #42
Name
Data Quality Flag
Set
Time series defined by using: EPOCH
ParameterKey
D_Qual
Description
Data Quality Flag - The Data Quality Word has Bits set to 1 when the listed Conditions are True. Bit #31 is the Most Significant Bit in the Word, and it will not be used as a Flag. These are the Bit Assignments: Bit 0 - Image Data Frame Sync, Error Bit 1 - Image Data Frame Counters, Error Bit 2 - Image Data Fill Frame Flag.
Caveats
MSB will not be used as a Flag, see TEXT for other Bit Assignments
Cadence
PT4M
RenderingHints
AxisLabel
DQF
ValueFormat
Z8
ScaleMin
0
ScaleMax
2147483647
ValidMin
0
ValidMax
2147483647
FillValue
-2147483648
Support
SupportQuantity
Other
Parameter #43
Name
Post Gap Flag
Set
Time series defined by using: EPOCH
ParameterKey
Post_Gap
Description
Project Standard Value Assignments - The Post Gap Flag has these possible Values: 0 - No Gap occurred immediately prior to this Record, 1 - The Gap occurred because the Instrument was not in a Mode that allowed for the Production of Images for the selected Sensor, 2 - The Gap occurred because Level Zero Data were Missing, 3 - The Gap occurred because Level Zero Data were too Noisy to extract Images.
Cadence
PT4M
RenderingHints
AxisLabel
Gap Flag
ValueFormat
Z8
ScaleMin
0
ScaleMax
2147483647
ValidMin
0
ValidMax
2147483647
FillValue
-2147483648
Support
SupportQuantity
Other
Parameter #44
Name
Expanded Count Table
ParameterKey
ExpandedCount
Description
Expanded Count Table: Quasi-Logarithmically Uncompressed Pixel Counts - The Image Pixel Counts are quasi-logarithmically compressed to the Range 0-255. This Table gives the Average of the Uncompressed Range for each Compressed Count Value. Table Entries 1-256 correspond to Compressed Counts 0-255, respectively.
Caveats
Image_Counts contains Pixel Counts which have been Quasi-Logarithmically Compressed by the Instrument. Approximate uncompressed Value for Image_Counts(i,j) is ExpandedCount(Image_Counts(i,j)+1).
Cadence
PT4M
RenderingHints
AxisLabel
Exp_Counts
ValueFormat
F6.1
Structure
Size
256
Support
SupportQuantity
Other
Parameter #45
Name
Intensity Table
ParameterKey
Intens_Table
Description
Approximate Intensity Levels for each Filter - Approximate Intensity Levels in kiloRayleighs are given for each Compressed Count Value. Table Entries 1-256 correspond to Compressed Counts 0-255, respectively. Intensity Calculation is described in the Sensitivities_and_Intensities.txt File.
Caveats
Approximate Intensity in kR for Image_Counts(i,j) is Intens_Table(Image_Counts(i,j)+1)
Cadence
PT4M
Units
kR
UnitsConversion
1.256637e8>(m^2 s sr)^-1
RenderingHints
AxisLabel
Intensities
ValueFormat
1PE11.5
Structure
Size
256
Support
SupportQuantity
Other
Parameter #46
Name
Image Header Bytes
Set
Time series defined by using: EPOCH
ParameterKey
Headers
Description
Image Header Bytes Column 1 Labels from HEADER_BLOCK: [sync byte 1,sync byte 2,sync byte 3,image block type,image block number,highest image block number,block size LSB,block size MSB,X size LSB,X size MSB,Y size LSB,Y size MSB,base,gain,active sensor,filter wheel step,field stop step,azimuth,elevation,nadir high,nadir low,msec_lo LSB,msec_hi MSB,sec_lo LSB,sec_lo NSB,sec_hi MSB,tjd_lo LSB,tjd_hi MSB,image number,CCD status 1 vdump LSB,CCD status 2 vdump MSB,CCD status 3 rdump LSB,CCD status 4 rdump MSB,CCD status 5 oscan LSB,CCD status 6 oscan MSB,CCD status 7 anti-bloom rates,CCD status 8 time base,CCD status 9 hdump LSB,CCD status 10 hdump MSB,CCD status 11 A/D convs LSB,CCD status 12 A/D convs MSB,CCD status 13 cycle LSB,CCD status 14 cycle MSB,CCD status 15 flag bits,CCD status 16 erase,CCD status 17 images,CCD status 18 exp time LSB,CCD status 19 exp time NSB,CCD status 20 exp time MSB,CCD status 21 delay convs,,,orbit clock LSB,orbit clock MSB,MM2S 16 LSB,MM2S 15 MSB,N2S pitch P90 LSB,N2S pitch P90 MSB,sector count LSB,sector count MSB,s-lo LSB at start cycle,s_lo NSB at start cycle,ms_hi MSB at start cycle,sectors exp bits 11-4] Column 2 Labels from HEADER_BLOCK: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16]
Cadence
PT4M
RenderingHints
AxisLabel
Image Headers
ValueFormat
I4
Structure
Size
64 16
FillValue
255
Support
SupportQuantity
Other
Parameter #47
Name
Image Row Number of Coordinates
ParameterKey
image_row_crd
Description
Image Row Number of Coordinates
Cadence
PT4M
RenderingHints
AxisLabel
Image Row
ValueFormat
I3
ScaleMin
1
ScaleMax
256
Structure
Size
18
ValidMin
1
ValidMax
256
Support
SupportQuantity
Other
Parameter #48
Name
Image Column Number of Coordinates
ParameterKey
image_col_crd
Description
Image Column Number of Coordinates
Cadence
PT4M
RenderingHints
AxisLabel
Image Column
ValueFormat
I3
ScaleMin
1
ScaleMax
256
Structure
Size
18
ValidMin
1
ValidMax
256
Support
SupportQuantity
Other
Parameter #49
Name
Row Index of Image Array
ParameterKey
image_row
Description
Image Row Number
Cadence
PT4M
RenderingHints
AxisLabel
Image Row
ValueFormat
I3
Structure
Size
256
Support
SupportQuantity
Other
Parameter #50
Name
Column Index of Image Array
ParameterKey
image_column
Description
Image Column Number
Cadence
PT4M
RenderingHints
AxisLabel
Image Column
ValueFormat
I3
Structure
Size
256
Support
SupportQuantity
Other
Parameter #51
Name
Header Block Number
ParameterKey
header_block
Description
Header Block Number
Cadence
PT4M
Structure
Size
16
Support
SupportQuantity
Other
Parameter #52
Name
Header Field Names
ParameterKey
hdr_fieldname
Description
Header Field Names
Cadence
PT4M
Structure
Size
64
Support
SupportQuantity
Other