IC1318 - Gamma Cygni area (RGB) : 無料・フリー素材/写真
IC1318 - Gamma Cygni area (RGB) / 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: 201 minutes by 135 minutes (3.35 degrees by 2.25 degrees) Image Scale: 6 arc-second/pixelDate: 2008/08/31 Exposure: 12 x 10 minutes = 2h total exposure, ISO800, f/4.8 Filter: IDAS LPSCamera: 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 software using 3-second guide exposures Processing: Raw conversion and calibration with ImagesPlus (dark frames, bias frames, and flat frames); Aligning and combing with Registar; Levels adjustment, cropping/resizing, JPEG conversion with Photoshop CS. No sharpening or noise reduction.Remarks: Temperature at start/end = 57F/51F ; SQM-L reading 21.48 (start) |
| 撮影日 | 2008-08-31 00:00:00 |
| 撮影者 | s58y |
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