Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.297..839k&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 297, Issue 3, pp. 839-848.
Astronomy and Astrophysics
Astronomy
8
Instrumentation: Miscellaneous, Methods: Data Analysis, Techniques: Image Processing
Scientific paper
Photographic Schmidt plates are among the most effective tools in wide-field astronomy. One of the principal difficulties of photographic plates when compared to modern detectors is lack of image depth. We present a technique for stacking plates digitized using the SuperCOSMOS microdensitometer, aimed at maximizing the signal-to-noise ratio in faint images. The efficacy of several image combination algorithms is tested by stacking plate frames in the presence of spurious images. We find that an `average sigma clipping' type pixel rejection in conjunction with our weighting scheme is most effective in delivering a clean, high signal-to-noise ratio stack. The gain in limiting magnitude obtained from stacking is found to be consistent with that expected: DeltaM~1.5 for a stack of 16 good-quality plates.
Hambly Nigel C.
Hawkins R. S. M.
Knox R. A.
MacGillivray Harvey T.
No associations
LandOfFree
Digital stacking of photographic plates with SuperCOSMOS 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 Digital stacking of photographic plates with SuperCOSMOS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital stacking of photographic plates with SuperCOSMOS will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1270650