Re: Extracting green channel from FITS

Posted by han.k on Mar 03, 2022; 11:08am
URL: http://astroimagej.170.s1.nabble.com/Extracting-green-channel-from-FITS-tp1750p1820.html

Hi Karen,

I double checked again my test images with Siril, CCDCiel and Pixinsight program and they display the colour correctly so that is confirmed. The only difference it that some programs flip the image vertical on ROWORDER and other only flip the Bayer pattern but that doesn't matter for astronomy.


Something totally different. I promote the better use of TIFF files for astronomy. Would it technically be possible that AstroImageJ could read KEYWORDS from a TIFF file description? This specification makes conversion between TIFF and FITS  possible without loosing the header info. See the draft specification here:

https://astro-tiff.sourceforge.io/ 

I used it currently for saving disk space used for raw files. We typically produce raw files in the thousands. This is easier to implement then the RICE compression (cfitsio) as specified in the FITS standard with almost the same compression performance.

I don't want to generate work for you. Only if you have some spare time or have a trainee without work :)

Thanks, Han