Photometric flats: an essential ingredient for photometry with wide-field imagers

Details Photometric flats: an essential ingredient for photometry with wide-field imagers Photometric flats: an essential ingredient for photometry with wide-field imagers

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5493..453s&link_type=abstract

Optimizing Scientific Return for Astronomy through Information Technologies. Edited by Quinn, Peter J.; Bridger, Alan. Proceed

Astronomy and Astrophysics

Astronomy

7

Scientific paper

We discuss the challenges to photometry introduced by internal redistribution of light in wide-field imaging cameras with focal-reducers. We have developed a simple least-squares procedure which can be used to determine the zero-point variations across the field. The method uses three orthogonally offseted images of a reasonably dense stellar field, plus an image containing at least three standard stars scattered across the field. The method, which does not require rotating the instrument, have been applied to correct data from the Wide Field Imager at La Silla. It has been shown to reduce a 12% center-to-edge gradient down to a ~2% rms variation accross the field. A new method which can be used with data taken during non-photometric nights is also presented.

Affiliated with

Also associated with

No associations

Rating

Photometric flats: an essential ingredient for photometry with wide-field imagers 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 Photometric flats: an essential ingredient for photometry with wide-field imagers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric flats: an essential ingredient for photometry with wide-field imagers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1821963