... An OBJECT column gives the name of the object observed (usually a star name). ... In critical cases, it is common practice to measure sky on two or more positions around a target object, and these positions must be identified. ... A general treatment of this problem requires a column called OBJECT, bearing the usual name of the object (as in the star tables); a column labelled STARSKY, to distinguish between star+sky, star alone, or sky alone; and additional columns to identify the sky position. ...

Optics includes the surveys and adjustments to the reflectors as well as the pitch, roll, and focus measurements. ... 080515: platform/tiedown motion during vlbi cal scan . ... Surveying the primary reflector . Surveying the dome position from AO9 . ... year 2002:Td inches/platform inch, TdPos vs temp at platform focus position. dec03: platform corner height vs za when looking at tower. jan10: dynamic load on tiedowns from platform motion. 22feb10: fit tiedown tensions using 2008,2009 data . ...

New reduction of minor planets photographic plates obtained with Pulkovo Normal Astrograph A.A. Berezhnoy Pulkovo Observatory of RAS, Saint-Petersburg, Russia Minor Planet observations at Pulkovo Periodical observations of 14 bright asteroids named Selected Minor Planets (SMP) were performed at Pulkovo since 1948 within the international framework started by works of B.V. Numerov and D. Brouwer. ... 108 133 113 74 124 67 97 88 14 84 64 5 20 19 Epochs (YYYY.MM) 1200 Mean values of total obs. ...

... The HST uses an onboard model of its orbit to perform in real-time various control functions relating to spacecraft operations and observation support. ... New coefficients for the ephemeris are updated every other day, and are archived as FITS keywords for each HST observation data set. Using these coefficients,an observer can perform a variety of calibration and characterization calculations relating to the orbital position and velocity of the telescope. ...

... The errors associated with several of the pipeline corrections will not manifest themselves until data from individual visits are compared via the plate overlay process. ... The locations of the individual reference stars on each plate determine how to map the data from that visit onto the common master plate. ... The rms residuals of the fit, referred to as the plate overlay residuals , can be as small as 1 mas or as large as 6 mas. ... POSITION Mode Corrections and Errors . ...

Next: Generation from In-Orbit Data Up: ASTROMET Previous: Description Contents . ... The pinhole positions were scaled, rotated and shifted until the best match between pinhole position and measured image was achieved. A pinhole starmask image in the correct position was generated (starmask_new.fits). ... 382.431 cm Pinholes starmask positions and centroids of the measured images were paired, and the difference between measured and expected positions is written to a file (routine DISTORT.PRO). ...

The following parameters as a function of the universal time are enclosed in this file. 1. no . ... Universal time date (YYYYMMDD) . ... Universal time (.hhmmss) . ... Geomagnetic local time in the satellite position . ... geomagnetic latitude . ... co-ordinate - . ... system . ... co-ordinate system . ... Solar-ecliptic co-ordinate - . ... Satellite velocity . ...