File:S58y - Orion Sword Mosaic.jpg
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Summary edit
| Description |
Subject: Orion sword mosaic -- 6 panels (includes existing M42 shot + existing HH shot + 4 others) Image FOV = 6.62 degrees by 4.78 degrees (397 minutes by 287 minutes) -- approximate Image Scale = 20 arc-second/pixel Date: 2006/12/02, 2006/12/30, 2007/01/10, 2007/01/16, 2007/01/17, 2007/02/08, 2007/02/09, 2007/02/15, 2007/02/16 Exposure: 39x600s (M42 area) + 40x600s (Horsehead area) + 66x600s (rest) = 145x600s = 24h10m total exposure -- ISO800, f/4.8 Filter: Baader 7nm H-alpha filter Camera: Hutech-modified Canon 30D Telescope: SV80S 80mm f/6 + TV TRF-2008 0.8X reducer/flattener = 384mm FL, f/4.8 Mount: Losmandy G-11 Guiding: ST-402 autoguider and SV66 guidescope. MaximDL autoguiding software using 1-second guide exposures Processing: Raw conversion and calibration with ImagesPlus (dark and bias frames only, no flat frames); Aligning and combining with Registar; Initial levels adjustment (gamma=2.5) and cropping in PhotoShop CS and CS4. Then mosaicing with AutoPano Pro, more levels adjustment, downsampling, and JPEG conversion with PhotoShop CS4. Remarks: temperatures at end: 25F, 24F, 19F, 25F, 27F, 23F, 23F, 20F, 25F. Taken from a light-polluted location (perhaps 20.25 SQM reading, average) |
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| Author | s58y |
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This image, originally posted to Flickr, was reviewed on January 27, 2012 by the administrator or reviewer File Upload Bot (Magnus Manske), who confirmed that it was available on Flickr under the stated license on that date. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 19:24, 27 January 2012 | | 1,192 × 860 (296 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | {{Information |Description=Subject: Orion sword mosaic -- 6 panels (includes existing M42 shot + existing HH shot + 4 others) Image FOV = 6.62 degrees by 4.78 degrees (397 minutes by 287 minutes) -- approximate Image Scale = 20 arc-second/pixel Dat |
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