Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  48 sig Ori  ·  50 zet Ori  ·  Alnitak  ·  B33  ·  Horsehead nebula  ·  IC 431  ·  IC 432  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  Sh2-277  ·  The star Alnitak (ζOri)  ·  The star σOri  ·  VdB51
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Horsehead and Flame Nebulas in H-alpha, JDJ
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Horsehead and Flame Nebulas in H-alpha

Getting plate-solving status, please wait...
Horsehead and Flame Nebulas in H-alpha, JDJ
Powered byPixInsight

Horsehead and Flame Nebulas in H-alpha

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Description

I once again revisited the Horsehead and Flame Nebulas with my new imaging setup consisting of a WO GT81 APO refractor and full-spectrum modified Nikon D5300 DSLR. This time I imaged with a 12nm H-alpha filter. NB imaging is pretty amazing, although the processing has been a challenging learning curve and I think I have some thermal noise issues at the longer exposure times that I need to investigate further. I plan to combine this NB image with the RBG image I previously generated once I figure out the process in PixInsight...

Horsehead and Flame Nebulas imaged on January 14&15, 2019 with WO GT81 at F4.7 (382 mm focal length) using Flat6A II field flattener/0.8x reducer, Optolong 12nm Hydrogen Alpha Filter, and full spectrum modified Nikon D5300. Stacked using PI for a total integration time of ~3 hours using 180 sec subs at ISO 400. Calibrated using batch pre-processing (BPP) script using darks, bias, and flats. Registered and stacked using StarAlighment and Integration. Post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT noise reduction, stretched using Histogram Transformation Tool, Curves Transformation, TGVDenoise, HDR Multiscale Transform, Local Histogram Equalization, and Morphological Transformation to shrink stars.

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