M42, the Orion Nebula sets in the trees in the west just after the start of morning twilight, with the leafless trees heralding the coming cold and the start of winter.
Exposure Data
- Lens: Nikkor 180mm f/2.8 ED AIS manual focus
- Focal Length: 180 mm
- Focal Ratio: f/2.8
- Exposure: HDR composite of 15, 10, 5 and 1 second exposures for core of M42
- Mount: Losmandy GM 100EQ
- Guiding: Unguided
- Camera: Canon EOS 1000D (Digital Rebel XS) DSLR
- Mode: JPEG
- ISO: 1600
- White Balance: Custom
- In-Camera Noise Reduction: Off
- Filter: Ha: None
- Location: Steelmantown, NJ
- Temperature: 28F
- Time: 5:31 a.m. EST
- Date: November 13, 2010
- Calibration: None
- Processing: HDR composite via layer masks in Photoshop CS5
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