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How can I perform aperture photometry on a SPIRE image?
Posted by Mark Kidger, Last modified by Mark Kidger on 14 September 2018 05:19 PM
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The Herschel Science Centre has produced a short videotutorial that gives a simple, step-by-step guide for anyone who would like to perform aperture photometry on a SPIRE image. You can find it in the following short videotutorial: https://www.youtube.com/watch?v=fjzf-VN_X0s This short videotutorial will show you how to perform aperture photometry, what tools to use and what corrections to perform on the data to get the best final result. The procedure is different depending on whether you have a point source or an extended source calibrated map. In the former case you need to convert from Jy/beam to Jy/pixel, measure the photometry and then apply corrections for the beam, the aperture and the colour. In the latter case, you take the photometry and apply only the colour correction for extended sources. You will be guided through the flowchart for obtaining photometry and will be shown a practical example of data reduction showing the commands required and shows you the different tasks that are available. | |
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