The SuperCOSMOS Sky Survey. Paper III: Astrometry

Details The SuperCOSMOS Sky Survey. Paper III: Astrometry The SuperCOSMOS Sky Survey. Paper III: Astrometry

2001-08-17

arxiv.org/abs/astro-ph/0108291v1

Mon.Not.Roy.Astron.Soc. 326 (2001) 1315

Astronomy and Astrophysics

Astrophysics

15 pages, 12 figures; accepted for publication in MNRAS

Scientific paper

In this, the third in a series of three papers concerning the SuperCOSMOS Sky Survey, we describe the astrometric properties of the database. We describe the algorithms employed in the derivation of the astrometric parameters of the data, and demonstrate their accuracies by comparison with external datasets using the first release of data, the South Galactic Cap survey. We show that the celestial coordinates, which are tied to the International Celestial Reference Frame via the Tycho-2 reference catalogue, are accurate to better than +/- 0.2 arcsec at J,R=19,18 rising to +/- 0.3 arcsec at J,R=22,21 with positional dependent systematic effects from bright to faint magnitudes at the +/- 0.1 arcsec level. The proper motion measurements are shown to be accurate to typically +/- 10 mas/yr at J,R=19,18 rising to +/- 50 mas/yr at J,R=22,21 and are tied to zero using the extragalactic reference frame. We show that the zeropoint errors in the proper motions are < 1 mas/yr for R > 17 and are no larger than 10 mas/yr for R < 17 mas/yr.

Affiliated with

Also associated with

No associations

Rating

The SuperCOSMOS Sky Survey. Paper III: Astrometry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The SuperCOSMOS Sky Survey. Paper III: Astrometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The SuperCOSMOS Sky Survey. Paper III: Astrometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-544016