taskGNU Astronomy Utilities - Tasks: task #14164, Optional Sky image for MakeCatalog

 
 

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task #14164: Optional Sky image for MakeCatalog

Submitted by:  Mohammad Akhlaghi <makhlaghi>
Submitted on:  Mon 26 Sep 2016 11:44:28 AM UTC  
 
Should Start On: Sun 25 Sep 2016 03:00:00 PM UTCShould be Finished on: Sun 25 Sep 2016 03:00:00 PM UTC
Category: MakeCatalogPriority: 5 - Normal
Item Group: EnhancementStatus: Postponed
Privacy: PublicPercent Complete: 0%
Assigned to: NoneOpen/Closed: Open
Effort: 0.00

Mon 26 Sep 2016 11:44:28 AM UTC, original submission:

For large images, each one of the inputs necessary for MakeCatalog can be very large. This makes keeping the inputs and later reading them hard.

The Sky image is mostly redundant since it can be subtracted from the input image. In this case, other than the `--sky' option, or output column, it is not necessary at all.

So we can make this image an optional input into MakeCatalog: similar to the WCLUMPS keyword in the objects image which specifies if there is a clump image or not. By default make catalog can assume that the input image is sky subtracted. However, when the WSKY (just a demo name for now) keyword is present in the input image's header and has a value of 'yes', then it will use the Sky image.

This check can be done in `ui.c' and so if the user asks for the Sky column (with the `--sky' option) and the input is already Sky subtracted, we can warn the user or abort.

This can also be one step towards task #13759 (to decrease the memory usage of MakeCatalog).

Mohammad Akhlaghi <makhlaghi>
Project Administrator

 

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