| DOBSONIAN ASTROPHOTOGRAPHY | ||||||||
| Q0957+561 A/B | ||||||||
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Telescope: Obsession Mirror: 25" f/5 GalaxyOptics Drive: AZ/ALT, StellarCAT ServoCAT with DSC Argo Navis Camera Equipment: ST-10XME Class 2 CCD, CFW-8A, AO-7, Pyxis Field De-Rotator, TCF-S Exposure: Single 30 minute. Field Rotation Rate: Approximately -11 degrees/hour. Processing: CCDSoft Version 5 (hot and cold pixel repair, DDP), Photoshop 5.0 (Levels, Unsharp Mask) Location: My backyard in Ridgecrest, CA (Mojave Desert), 2600 ft. elevation, population 30,000 Date: 6/03//05 Comments: Gravitation Lens Quasar. Saw an article on Pg. 108 of the July 2005 issue of Sky & Telescope magazine and decided to try and see if I could image a quasar through a general relativistic gravitational lens. Both A and B are the same quasar! |