File:M13-2012-07-25.jpg
M13-2012-07-25.jpg (616 × 403 pixels, file size: 131 KB, MIME type: image/jpeg)
Captions
Captions
Summary edit
| Description |
English: This is an image of M13 with minimalistic astrophotography equipment. It was taken with an unmodified Canon EOS 20D in ISO 400 setting. The Objektive was a Carl Zeiss Jena Sonnar 1:2,8/180. M13 was tracked with a self-made "barndoor-type" mount. 8 images á 23 s were stacked with Fitswork; the first two images were taken at aperture 2.8, the next six at aperture 4. No correction using darks or flats were performed.
Fitswork documentation: SIMPLE = T BITPIX = -32 NAXIS = 3 NAXIS1 = 616 NAXIS2 = 403 NAXIS3 = 3 CTYPE3 = 'RGB ' DATE-OBS= '2012-07-25' TIME-OBS= '00:43:33' INSTRUME= 'Canon Canon EOS 20D' EXPTIME =2.0000000000000E+01 SHUTTER = INF COMMENT ISO 400 COMMENT Aperture 2.1474836480000E+09 HISTORY 8 Bilder Mittelmed HISTORY Ausschnitt [X1: 0, X2: 3501, Y1: 0, Y2: 2313] HISTORY Ausschnitt [X1: 349, X2: 3386, Y1: 38, Y2: 2143] COMMENT FWHistPar Min 0 Max 138 Gam 1.00 Typ 0 COMMENT FWHP3 35JBE88F3594309F2B6101C000023D15D7F375CADA26961CF06FD44FFFF HISTORY Bild nach Histogramm skaliert HISTORY Umgebung (15x15) als Schwarzwert R: 26887.000 G: 23414.000 B: 18393.000 HISTORY Umgebung (15x15) als Schwarzwert R: 159.460 G: 214.130 B: 43.983 subtra HISTORY Pixel als Weisswert nehmen R: 1.084 G: 0.985 B: 0.884 multipliziert HISTORY Bild nach Histogramm skaliert HISTORY Hintergrund ebnen Nebel HISTORY Hintergrund ebnen variabel, Ebnen Radius: 50 HISTORY Rauschfilter, Schwelle 15,2, Radius 3,05, Gauss -> Cauchy 100 HISTORY Ausschnitt [X1: 1820, X2: 2435, Y1: 1397, Y2: 1799] HISTORY Umgebung (15x15) als Schwarzwert R: 8103,800 G: 8536,900 B: 8556,900 su END |
| Date | |
| Source | Own work |
| Author | Trinitrix |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:16, 1 August 2012 | | 616 × 403 (131 KB) | Trinitrix (talk | contribs) |
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