M42 The Great Orion Nebula. (untracked)
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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