cbassa / stvid

Satellite tracking with video cameras
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Correct for image drift in non-tracked observations #76

Closed cbassa closed 1 year ago

cbassa commented 2 years ago

For setups where the is camera staring at a fixed azimuth and elevation, satellites and stars will move during the non-finite exposure. To correct for this, the RA of satellite predictions needs to be corrected by the sidereal time difference with respect to the mid time of the exposure, and measurements need to be corrected for the opposite effect. Ensure that equatorial coordinates are converted from J2000 to FK5 epoch of date when applying the sidereal time difference, and converted back to J2000 after the correction.