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How can I obtain aperture photometry from PACS maps?
Posted by Mark Kidger, Last modified by Mark Kidger on 13 September 2018 08:52 AM
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If you are an absolutely beginner with Herschel data and want to learn how to do photometry on PACS observations, there are two places to start before working with data. First, you should look at the Quick Start Guide for Photometry (CSG), otherwise known as the PACS Data Reduction Launchpad: Photometry. This will teach you some of the basics of PACS data analysis. It will also guide you towards more detailed documentation that will explore photometry in more depth. Second, you should consult the Herschel Science Centre short videotutorial on Starting with PACS Photometry. You can find it here: https://www.youtube.com/watch?v=yLHLA5Jjtiw These two resources will teach you the basics of PACS data, its structure, what data is suitable for which purpose and where to begin. To follow this up and learn how to take aperture photometry with PACS data, there is a second Herschel Science Centre short videotutorial that has been prepared that will talk you through the choices and decisions that you must make when carrying out aperture photometry with PACS. You can find it here: https://www.youtube.com/watch?v=R5S8VnfbNEI This short videotutorial will show you where to obtain the best product for your object of interest, how to select the best aperture size to use, what the PACS photometer beam profile is, how to calculate the aperture correction (i.e. the lost flux that falls outside the aperture), colour corrections and how to estimate errors and the background. It will also show you where to find and how to personalize a useful script within HIPE to carry out aperture photometry with PACS data. | |
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