Digital stacking of Tech Pan films and the photometry of faint galaxies.

Details Digital stacking of Tech Pan films and the photometry of faint galaxies. Digital stacking of Tech Pan films and the photometry of faint galaxies.

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26as..117..179s&link_type=abstract

Astronomy and Astrophysics Supplement, v.117, p.179-187

Astronomy and Astrophysics

Astrophysics

10

Image Processing, Galaxies: Photometry, Galaxies, Clusters: Virgo Cluster

Scientific paper

We describe the processing and co-addition of digitised scans of Tech Pan films, and discuss the scientific and photometric gains obtained from use of co-added films. This work is based on SuperCOSMOS scans at 10μm resolution of small regions of the Virgo cluster, which form part of a large-scale survey for low surface brightness galaxies in Virgo. Use of co-added Tech Pan films allows the detection and surface photometry of such galaxies to very faint limits, and therefore provides an invaluable tool for a deeper sampling of the cluster galaxy luminosity function over large areas of sky. The calibration steps necessary before the films can be stacked are described in detail, as well as the stacking process itself. Median-stacking is found to be more effective than averaging or simple adding of individual images, mainly due to its ability in removing spurious features present on single films. We also discuss several of the properties of stacked Tech Pan films, such as background variations, the extent of galaxy profiles and the detectability of small, faint galaxies.

Affiliated with

Also associated with

No associations

Rating

Digital stacking of Tech Pan films and the photometry of faint galaxies. 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 Tech Pan films and the photometry of faint galaxies., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital stacking of Tech Pan films and the photometry of faint galaxies. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1351672