Photometry with the rapid alternate detection system.
Abstract
The photometric procedures, capabilities, and early results of the Rapid Alternate Detection System are presented and discussed. The RADS is an automated, chopping two-star photometry system, designed and constructed at the University of Calgary and currently in operation on the 41-cm telescope of the Rothney Astrophysical Observatory. The precision of the photometry is dependent upon Poisson statistics and the frequency bandwidth of the noise. The need for first-order extinction corrections is eliminated and a procedure for computing second-order extinction and transformation coefficients is demonstrated. Finally, light curves of the W UMa systems 44i Boo and RW Com, obtained on cloudy nights, are presented.
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- September 1983
- DOI:
- 10.1086/131237
- Bibcode:
- 1983PASP...95..666M
- Keywords:
-
- Astronomical Photometry;
- Electrophotometry;
- Variable Stars;
- Accuracy;
- Errors;
- Interstellar Extinction;
- Light Curve;
- Astronomy