| Dobsonian Astrophotography |
| NGC 7331 |
| Telescope: Obsession Mirror: 25" f/5 Galaxy Optics Drive: AZ/ALT, StellarCAT ServoCAT with DSC Argo Navis |
| Camera Equipment: ST-10XME Class 2 CCD, AO-7, Pyxis Field De-Rotator, TCF-S |
| Exposure: 11x5 minutes. Processing: CCDOPs (Flat, Dark Subtract, DDP),
RegiStar 1.0 (Combining), Photoshop 5.0 (Levels, Curves) |
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Location: My backyard in Ridgecrest, CA (Mojave Desert), 2600 ft. elevation, population 30,000 Date: 6/05//05 Comments: First attempt to image a galaxy without the CFW-8A. This does seem to eliminate most, if not all, of the vignetting problem. |