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M42 The Great Orion Nebula. (untracked)

Category:Deep Sky
Published:
479
M42 The Great Orion Nebula. (untracked)NGC 1973NGC 1975NGC 1976NGC 1977NGC 1980NGC 1981NGC 1982IC 420
Resolution:
1744x1080 px
File size:
389 KB

Photo description / processing

And the weather finally cleared up again. I saved up two evenings because it's too cold to sit outside. I shot with manual tracking on a regular tripod without a mount, in batches of 10 frames at 1-second exposures. Frame details: focal length 250mm, exposure 1 sec, aperture f/5.6, ISO 1600 (1168 frames), 3200 (10 frames), 6400 (10 frames), darks 36 frames (ISO 1600). In total, 1188 frames, 19 minutes 48 seconds. It was a moonless night, Bortle 6. The result was pleasing, especially considering my previous results were just so-so. Thanks to @poppy8micro for the advice to lower the exposure from 2 to 1 second—the result really did turn out better.

Technical information

Telescope/Lens
Canon EF-S 55-250mm Lens
Camera
Canon EOS 1100D (astro-modified)
Mount
Tripod
Software
Sequator, Siril, StarNet++ GUI, Adobe Lightroom
Location
с. Рамено, Сызранский р-н, Самарская обл., Россия

Light pollution

Orange, Bortle 6 zone

Date taken

Exposure

  • 1168 × 1″ · ISO/Gain: 1600 ·
  • 10 × 1″ · ISO/Gain: 3200 ·
  • 10 × 1″ · ISO/Gain: 6400 ·

Total exposure: 20 m

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