IC1318 - Gamma Cygni area (H-alpha) : 無料・フリー素材/写真
IC1318 - Gamma Cygni area (H-alpha) / s58y
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Subject: IC1318 -- Gamma Cygni area Image FOV: 200 minutes by 132 minutes (3.333 degrees by 2.2 degrees) Image Scale:12 arc-second/pixelDate: 2008/06/06 Exposure: 6 x 10 minutes = 1h total exposure, ISO800, f/4.8 Filter: Baader 7nm H-alpha filterCamera: Hutech-modified Canon 30DTelescope: SV80S 80mm f/6 + TV TRF-2008 0.8X reducer/flattener = 384mm FL, f/4.8Mount: Astro-Physics AP900 Guiding: ST-402 autoguider and SV66 guidescope. MaximDL autoguiding softwareProcessing: Raw conversion and calibration with ImagesPlus (dark frames, bias frames, and flat frames); Aligning and combing with Registar; Levels adjustment, grayscale conversion, cropping/resizing, JPEG conversion with Photoshop CS. No sharpening or noise reduction.Remarks: Temperature at end = 65 ; SQM-L readings: start=21.63 (crescent moonset -- murky), end=21.70 (murky). Note the terrible noise problem, perhaps caused by the high temperatures and murky conditions? |
| 撮影日 | 2008-06-06 00:00:00 |
| 撮影者 | s58y |
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