File:S58y - Orion Sword Mosaic.jpg
Original file (1,192 × 860 pixels, file size: 296 KB, MIME type: image/jpeg)
Captions
Summary
[edit]DescriptionS58y - Orion Sword Mosaic.jpg |
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 |
Licensing
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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. |
Annotations InfoField | This image is annotated: View the annotations at Commons |
Horsehead Nebula
File history
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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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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Width | 6,906 px |
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Height | 4,985 px |
Compression scheme | Deflate (Adobe) |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 4 |
Horizontal resolution | 100 dpi |
Vertical resolution | 100 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CS4 Windows |
File change date and time | 22:59, 23 March 2010 |
Color space | Uncalibrated |
Image width | 1,192 px |
Image height | 860 px |
Bits per component |
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Date and time of digitizing | 18:30, 23 March 2010 |
Date metadata was last modified | 18:59, 23 March 2010 |
Unique ID of original document | xmp.did:D27F409BED36DF11A81DF51D0A27B23F |
IIM version | 92 |