IC1318 area with CLS filter : 無料・フリー素材/写真
IC1318 area with CLS filter / 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, NGC6888 and the Gamma Cygni area. Image Size: 4752 x 3168 (100 % full frame)Image FOV: 12.8 degrees by 8.5 degrees (full frame)Image Scale: 9.7 arc-second/pixel Date: 2012/05/19 (Processing backlog of old images) Exposure: 13 x 10 minutes = 2 hour 10 minutes, ISO1600, f/2.8 Filter: Astronomik CLSCamera: Hutech-modified Canon T1i/500DLens: Contax/Yashica 100mm f/2 (at f/2.8)Mount: Astro-Physics AP900Guiding: ST-402 autoguider through TV-102iis guidescope, Maxim DL autoguiding software Processing: Raw conversion and calibration with ImagesPlus; Aligning and combining with Registar. Final processing in Photoshop -- levels adjustment, cropping to 4752x3168 to remove ragged edges from alignment, JPEG conversion, etc.Remarks: Temperature at start = 48F; Humidity at start 68%; SQM-L reading at start/end = 21.39/21.28 (dawn) |
| 撮影日 | 2012-05-19 03:00:00 |
| 撮影者 | s58y |
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