1 / 10

One-Gyro Operations FGS Observations

One-Gyro Operations FGS Observations. Tips Feb 21, 2008 Ed Nelan. One Gyro Science - FGS. One-Gyro test included 5 orbits of FGS “astrometry” FGS2r & FGS3 guided FGS1r observed a bright star in POS mode for the duration of the orbit. provides an independent check of PCS performance.

Download Presentation

One-Gyro Operations FGS Observations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. One-Gyro OperationsFGS Observations Tips Feb 21, 2008 Ed Nelan

  2. One Gyro Science - FGS • One-Gyro test included 5 orbits of FGS “astrometry” • FGS2r & FGS3 guided • FGS1r observed a bright star in POS mode for the duration of the orbit. • provides an independent check of PCS performance. • One of the orbits used FGS2r in “single guide star” mode (no roll star). • This orbit used two targets in FGS1r to detect roll changes. • Merle Reinhart scripted the phase2 proposal (11078).

  3. One Gyro Science - FGS:guide stars

  4. Visit 01 V=13.9 V=13.0 Upgren69 V=9.6

  5. Visit 02 V=14.2 Upgren69 V=9.6 V=13.7

  6. Visit 03 V=14.0 Upgren69 V=9.6 V=13.7

  7. Visit 04 star1 V=9.6 guide star V=13.3 Star2 V=13.1

  8. Visit 6 V=14.2 star1 V=9.6 V=12.9

  9. One Gyro Science:observed jitter in FGS1r * This is the standard deviation of the FGS1r centroids

  10. One Gyro Mode:astrometry summary • FGS1r observations under 1-gyro mode suggests that PCS performance is not degraded relative to 2-gyro (or 3-gyro) operations. • Visit 04 (single guider) did not exhibit any roll changes greater than what is observed under single guider in 2-gyro & 3-gyro operations. • Single FGS guiding appears to be “fine” in 1-gyro operations. • There appears to be no reason to avoid using faint guide stars (V~14) in 1-gyro operations.

More Related