Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...183..177i&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 183, no. 1, Sept. 1987, p. 177-184. Research supported by the Oficina de Plani
Astronomy and Astrophysics
Astrophysics
23
Astronomical Photography, Computer Programs, Computerized Simulation, Faint Objects, Image Processing, Algorithms, Astronomical Photometry, Galaxies, Red Shift, Stars
Scientific paper
A description and the performance of techniques employed to analyze faint data recorded on deep 4 m size telescopes' photographic plates or CCD images are reported. By simulating data (i.e. stars and galaxies on noisy frames), it was possible to test the performance of these algorithms. The tests were designed so that the simulations resemble as much as possible deep digitized data from a 4 m type telescope prime focus plate. Nevertheless, the following results are applicable to data from CCD frames or other size telescopes, provided an appropriate scaling is done. (1) The detection was found to be 95% complete up to J = 23.7 mag for galaxies at a mean redshift z = 0.5. (2) The r-2 star/galaxy classifier proved to be reliable up to J ≈ 22 and (3) the photometry as done with the "first moment" method yields uncertainties of the order of ±0.17 mag at J = 23.0 mag.
No associations
LandOfFree
A faint object processing software - Description and testing 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 A faint object processing software - Description and testing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A faint object processing software - Description and testing will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1667904