CCD Photometry with Pyraf ASTR 3010

Useful Tutorials IRAF Aperture Photometry Tutorial: www.astro.washington.edu/courses/astro480/IRAF/iraf4_tutorial.pdf IRAF Beginner’s Guide: http://iraf.noao.edu/iraf/ftp/pub/beguide.ps.Z IRAF CCD Reduction Tutorial: http://iraf.noao.edu/iraf/ftp/iraf/docs/ccduser3.ps.Z

Photometric Reduction Project (20% of your final exam) Your individual account was created in space.physast.uga.edu isong@uga.edu 810-12-3456 userid: from your Oasis email address  “isong” passwd: temporary passwd  810123456  Upon 1st login, you will be asked to reset your password. CCD data are available in /home/astr3010/ImagingData BVI band photometric data with DOME flats, Sky flats, and Biases. 3 standard star fields.

Standard Fields Check the “StandardFields.pdf” file in the data directory

C D A B Science Field (D42, D44, D45) You need to measure B, V, I magnitudes (or upper limits) of following four stars: A, B, C, D Submit reduced FITS files and photometry result. Due Date: Dec 2, 2010 C D A B

A Quick Tutorial on Pyraf starting Pyraf mkiraf (only once) in your working directory  choose ‘xgterm’ type ‘pyraf’ editing, displaying, dumping parameters: epar, lpar, dpar start ds9 load packages in pyraf : imred  ccdred and digiphotapphot some useful commands imhead ccdlist setting up instrument  efosc.cl, efosc.dat, subsets CCD preprocessing zerocombine, flatcombine, ccdproc, badpixel image creation, etc. Doing an aperture photometry qphot Badpixel correction will be done by a separate python routine.