Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  28 b02 Cyg  ·  29 b03 Cyg  ·  34 P Cyg  ·  36 Cyg  ·  37 gam Cyg  ·  40 Cyg  ·  42 Cyg  ·  44 Cyg  ·  45 ome01 Cyg  ·  46 ome02 Cyg  ·  50 alf Cyg  ·  51 Cyg  ·  55 Cyg  ·  56 Cyg  ·  57 Cyg  ·  58 nu. Cyg  ·  59 f01 Cyg  ·  60 Cyg  ·  62 ksi Cyg  ·  B342  ·  B343  ·  B344  ·  B345  ·  B346  ·  B347  ·  B348  ·  B349  ·  B350  ·  B351  ·  B352  ·  And 74 more.
Cygnus On Fire, Todd Stephens
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Cygnus On Fire

Cygnus On Fire, Todd Stephens
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Cygnus On Fire

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Description

This is a 4-panel mosaic of the H-alpha nebulosity in the constellation Cygnus, but to me it looks a bit like a wind-swept wildfire with embers blowing through the wind. It could have been done in 3 panels, but I'm just not that good at framing.

I used my H-a modded Canon 600D, Rokinon 135mm f/2 with Optolong L-eNhance filter front-mounted with step-down rings, and Skyguider Pro guided with PHD2. I got a total of 170 300-second light frames at ISO 800 across the four nights, with a set of 12 darks for each night, and the same set of 30 flats and dark flats used across all four nights.

Calibrated, stacked, and mosaick-ed in Astro Pixel Processor, star reduction with Starnet++, and recombination and final tweaks in GIMP.

C&C welcome! Thanks for looking.

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Sky plot

Sky plot

Histogram

Cygnus On Fire, Todd Stephens