Practice Images for CCD Photometry?

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SUMMARY

The discussion focuses on the challenge of finding FITS images suitable for practicing CCD photometry, specifically bias, flat, and standard star images. Users are encouraged to utilize the NOAO public archive, which provides access to a comprehensive dataset, including various image types necessary for analysis. The IRAF software is highlighted as a tool for processing these images and obtaining transformation equations in UBV. A java-based download manager is recommended for efficiently downloading large datasets from the archive.

PREREQUISITES
  • Understanding of FITS (Flexible Image Transport System) file format
  • Familiarity with CCD photometry techniques
  • Knowledge of IRAF (Image Reduction and Analysis Facility) tasks
  • Experience with data management tools, specifically Java-based download managers
NEXT STEPS
  • Explore the NOAO public archive for additional FITS datasets
  • Learn how to use IRAF for photometric analysis and transformation equations
  • Research methods for processing bias and flat field images in CCD photometry
  • Investigate other sources of astronomical FITS images online
USEFUL FOR

Astronomy students, amateur astronomers, and researchers interested in CCD photometry and image analysis will benefit from this discussion.

mishima
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Hi, it seems astronomical FITS images are abundant on the internet. However, I am looking for FITS images of bias/flat and standard stars along with observations to practice CCD photometry and having a harder time.

I would like to be able to take a set of images and obtain the transformation equations in UBV, for instance (using IRAF tasks). Does anyone know a source of FITS which includes bias/flat/standards?
 
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Still looking for a good source of FITS with object, dark, bias, flat, standards, etc.

I contacted my local university's astronomy department as well as a nearby observatory hoping for a public archive of some sort. No response yet, I suppose its a weird thing to ask...

I also found the IRAF example files which includes a few image sets.
 
Well, with a little fiddling I was able to figure out NOAO's public archive to get a full night's worth of data from some random run 5 years ago.

http://portal-nvo.noao.edu/

Not sure this is the best, but it was quite usable with a java based download manager for grabbing the 410 files (1.4 G) worth of data.
 
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Likes yucheng and Drakkith

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