Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.247..311b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 247, NO.2/NOV15, P. 311, 1990
Astronomy and Astrophysics
Astronomy
52
Scientific paper
We describe a technique for separating blended objects in severely crowded regions in digitized scans of photographic plates. Although the technique has been designed primarily for use with the COSMOS high-speed photographic plate scanning machine, it is sufficiently flexible to be applied to any two-dimensional astronomical image. Tests carried out on simulated data indicate that, in general, residual systematic defects are less than 0.2 mag 0.1 in log(area) and 0.3 pixel (5 microns) in centroid for stellar objects (assuming a pixel size of 16 microns, corresponding to 1 arcsec on a UK Schmidt Telescope plate). In rare cases, where a very bright and very faint object are blended closely together, greater systematic defects are possible in the parameters determined for the fainter object (e.g. 0.6 mag), but even in these extreme situations the technique at least indicates that the parent object is multiple.
Beard Steven M.
MacGillivray Harvey T.
Thanisch P. F.
No associations
LandOfFree
The Cosmos System for Crowded-Field Analysis of Digitized Photographic Plate Scans 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 Cosmos System for Crowded-Field Analysis of Digitized Photographic Plate Scans, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Cosmos System for Crowded-Field Analysis of Digitized Photographic Plate Scans will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-841693