... of this arrangement is that loss of guide star lock will result in the WFPC2 shutter ... If guide star lock is reacquired prior to the end of the planned observation time ... 9000. 0.35 . 1.8 . 8.0 . 35. 180. 800. ...
... were obtained using the Guide Star Selection System (GSSS; see 3.4.5 Determining Coordinates in the Guide Star Selection System ... The guide stars are chosen from the Guide Star Catalog 2 (GSC2). ...
... Explanation . Orbit 1 . Initial guide-star acquisition . 6 .0 . Needed at start of observation of a new target . ... WFC overhead for the first expo sures in two series . 2 в 4 = 8.0 . Includes filter change, camera set-up, and readout . ...
... Sensor-Guider (FGS-Guider) is a near-infrared (NIR) camera that measures the ... FGS-Guider to perform a series of functions (Identification, Acquisition, Track, and ...
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Ссылки http://www.stsci.edu/jwst/doc-archive/technical-reports/JWST-STScI-001410.pdf -- 685.3 Кб -- 05.02.2013 Похожие документы
... of this arrangement is that loss of guide star lock will result in the WFPC2 shutter ... If guide star lock is reacquired prior to the end of the planned observation time ... 9000. 0.35 1 . 1.8 1 . 8.0 . 35. 180. 800. ...