File:M45 (4).jpg
Original file (1,620 × 1,215 pixels, file size: 395 KB, MIME type: image/jpeg)
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Summary
| Description |
Subject: M45 -- Pleiades Image FOV = 3 degrees by 2.25 degrees (180 by 135 minutes) Image scale: 6.666 arc-second/pixel Date: 2008/10/03, 2008/10/23 Location: near Halcottsville, NY Exposure: 44 x 10minutes = 7h20m total exposure, ISO 400, f/4.8 Filters: IDAS LP filter Camera: Hutech-modified Canon 30D Telescope: SV80S 80mm f/6 + TV TRF-2008 0.8X reducer/flattener = 384mm, f/4.8 Mount: Astro-Physics AP900 Guiding: ST-402 autoguider through SV66 guidescope, MaximDL autoguiding software with 5-second and 6-second guide exposures Processing: Raw conversion and calibration with ImagesPlus; Aligning and combining with Registar; levels, unsharp mask, color balance, cropping and JPEG conversion with Photoshop CS. No noise reduction. Remarks: Temperature at end: 30F on 2008/10/03, 18F on 2008/10/23; SQM-L readings: 2008/10/03 -- 21.27 start, 21.33 end; 2008/10/23 -- 21.33 start, 21.40 middle, 21.24 end (crescent moonrise) |
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| Author | s58y |
Licensing
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This image, originally posted to Flickr, was reviewed on February 18, 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. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:01, 18 February 2012 | | 1,620 × 1,215 (395 KB) | File Upload Bot (Magnus Manske) | {{Information |Description=Subject: M45 -- Pleiades Image FOV = 3 degrees by 2.25 degrees (180 by 135 minutes) Image scale: 6.666 arc-second/pixel Date: 2008/10/03, 2008/10/23 Location: near Halcottsville, NY Exposure: 44 x 10minutes = 7h20m total |
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