Hello,
Some background: I've been learning AstroImageJ and like its capabilities. I've already produced some convincing light curves using light frames taken with my Nikon D7500 through an 80 mm refractor. I'm familiar with calibration frames and stacking. And I'm quite familiar with Siril for astrophotography. It appears that AstroImageJ works best with files that are already in the FITS format. So I'd like to use Siril to convert my .NEF files to .FITS. The workflow I've developed is to use Siril to convert all my light, bias, dark and flat frames from .NEF to .FITs using Siril, making sure to convert them as 16-bit unsigned integer files, not 32-bit floating point. Next step is to extract the green channel from each converted image, then bring those files into AstroImage for calibration, stacking and doing aperture photometry.
Question: is this a good workflow?
Thanks so much in advance!
Wayne Buck
I use ASTAP with…
Hi Wayne,
I use ASTAP with a Nikon camera and it basically does all those steps in one package, so it sounds like that should work fine.
Thanks for sharing that Darren- it does look like a good image processing package. I’ll be looking into it as an AIP alternative!
John Pickett
No problem! I really enjoy it's quick conversion of NEF or RAW file to FITS, and the relatively easy green channel separation. Using the files in Astro Image J is quick and easy after too if you want or any other program for a result cross-check.
Photometry with the ASTAP program - YouTube
Here's a video by Han the author. This is a slightly older version, but 95% of it still applies.
I tried AIP4WIN, but just cannot get it to run consistent, and that's a shame, but not entirely unexpected for an older software package.