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- Exposure: Ha G B and [SII] Ha [OIII]
- All exposures binned 1x1
- Ha 10x1800s, Green 18x714s, Blue 18x900s, [SII] 11x1800s, [OIII] 11x1800s
- Total exposure time of 24.07 hours!
- Telescope: Takahashi FSQ-106
- Mount: Paramount ME
- Camera: SBIG STL-6303 CCD, AstroDon E-Series TruBalance Filters
- Location: JMSM Observatory, New Mexico (Owned by Mike Sherick)
- Date/Time:
- Ha: August 21/22 2007, 23:06-05:09 MDT
- Green & Blue:
- August 18/19 2007, 00:04-04:34 MDT
- October 8/9 2007, 19:56-03:12 MDT
- [SII] and [OIII]
- September 3/4 2007, 22:09-05:17 MDT
- October 3 2007, 20:14-23:10 MDT
- October 7/8 2007, 21:16-00:58 MDT
- Processing: Taken in MaxIM/DL v4 using CCD Commander.
- HaGB:
- Reduced, aligned, combined sub-exposures, and HaGB combine in CCDStack. Color balancing, contrast adjustment, levels, curves, color balance, USM, Color Mixer (10% Ha added to Blue channel), and Noise Ninja in Photoshop.
- [SII] Ha [OIII]
- Reduced, aligned, combined sub-exposures, in CCDStack. Color combine, color balancing, contrast adjustment, levels, curves, color balance, USM, and Noise Ninja in Photoshop.
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- Names:
- IC1805: Emission nebula (red) occupying most of the frame
- PN G135.6+01.0: Very small planetary nebula near the top of the image.
- This is very hard to see, but stands out well in the [SII] Ha [OIII] image. See if you can find it.
- Type: Emission Nebula
- Constellation: Cassiopeia
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