ResourceName
Gold Level 1D Occultation Plots
ReleaseDate
2025-03-03 13:30:47Z
RevisionHistory
RevisionEvent
ReleaseDate
2020-09-14 16:47:17Z
Note
Only known prior ReleaseDate of the metadata
RevisionEvent
ReleaseDate
2025-03-03 13:30:47Z
Note
Modified Funding Agency and AwardNumber. ZCB
Description
The Level 1C Dayside Disk Images are interrupted via stored instrument commands when
target stars suitable for occultation measurements approach either limb.
To perform the occultation measurement, the slit mechanism inserts the 1 degree wide occultation (OCC)
slit at the spectrometer focal plane, and the scan mirrors slew the Field of View to the star.
The mirror is centered at a 225 km tangent point altitude. Occultations require 6 minutes to
execute (30 seconds to configure the instrument, 30 seconds for uncertainty in timing and pointing,
4 minutes for the actual occultation, 30 seconds for uncertainty in timing and pointing, and 30
seconds to return to HR slit). Once the occultation is complete, the HR slit is inserted, the scan
mirror returns to its departure point in the original mapping observation. By choice GOLD is limited
to performing ~10 occultations a day for most of the year,
reducing the dayside mapping duty cycle by ~5%.
Acknowledgement
National Aeronautics and Space Administration; Dr. Richard Eastes
Funding
Agency
National Aeronautics and Space Administration
Project
Explorer Program
AwardNumber
contracts NNG19PQ28C
Contacts
InformationURL
Name
GOLD Homepage web page
URL
Description
GOLD web page with news and other information.
InformationURL
Name
GOLD Missions Space Science Reviews Article
URL
Description
Eastes, R.W., McClintock, W.E., Burns, A.G. et al. Space Sci. Rev. (2017) vol. 212, pp.383.
PriorIDs
spase://VSPO/DisplayData/GOLD/L1D/OCC/PT1080S
spase://NASA/DisplayData/SES-14/GOLD/L1D/OCC/PT1080S
Northern hemisphere and southern hemisphere images are separate.
Cadence is irregular.
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