Heart and Soul Nebula -- H-alpha : 無料・フリー素材/写真
Heart and Soul Nebula -- 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: NGC1805 (Heart Nebula), NGC1848 (Soul Nebula) Image FOV: 7.0 degrees by 4.7 degrees (420 minutes by 282 minutes) Image Scale: 20 arc-second/pixelDate: 2009/09/25Exposure: 12 x 10 minutes = 2h total exposure, ISO800, f/3.4 Filter: Astrodon 5nm H-alpha filter Camera: Hutech-modified Canon 30DLens: Leica APO Telyt-R 180mm f/3.4 at f/3.4Mount: Astro-Physics AP900 Guiding: ST-402 autoguider and TV102iis guidescope. MaximDL autoguiding software using 3-second guide exposures Processing: Raw conversion and calibration with ImagesPlus; Aligning and combing with Registar; Gray conversion, levels adjustment, cropping/resizing, JPEG conversion with Photoshop CS. No sharpening or noise reduction. Remarks: Temperature at start/end: 34F/34F; SQM-L reading start/middle/end: 21.41/21.44/21.48 |
| 撮影日 | 2009-09-25 00:00:00 |
| 撮影者 | s58y |
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