This image of the Orion, Horsehead, and Flame nebulae was captured on the nights of December, 2020 using a medium telephoto lens, a dual narrowband filter, and a OSC DSLR. This is image includes the H-alpha data from the red channel and the OIII data from the green & blue channels combined using the HOO palette.
Imaged with 200mm/F4 Nikon at F/4, STC Duo Narrowband Clip Filter, and full spectrum modified Nikon D5300.
Total integration time was ~2 hours using 21 subs at ISO400 x 240 sec and 24 subs at ISO400 x 60 sec. Pre-processed and integrated using PixInsight Batch Pre-Processing (BPP) script. Images calibrated using darks, bias, and flats. Cropped using dynamic crop and removed gradients using ABE. Combined 60s and 240s exposure images using HDR composition process. Extracted red/green/blue channels from HDR image using BatchChannelExtraction script.
R (Ha data) and Sum of G+B (OIII data) channels individually post-processed in Pixinsight: Cropped, gradient removal with ABE. Post-process using EZ Processing Suite for PixInsight: Denoise, Soft Stretch, HDR. Further processing using hdr multiscale transform, local histogram transformation and morphological transformation processes.
HOO image generated using SHO-AIP script. Final noise reduction using DeNoise AI.
For Ha version of the image and additional acquisition details, see:
https://astrob.in/adsdte/0/
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