M51: The Whirlpool Galaxy in Canes Venatici
| Right Ascension |
13 : 29.9 (h:m)
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| Declination |
+47 : 12 (deg:m)
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| Distance |
37000 (kly)
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| Visual Brightness |
8.4 (mag)
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| Apparent Dimension |
11x7 (arc min)
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More information on M51
Exposure:75 minute LRGB exposure (L=30 minutes (30 x 60sec.), R=15 minutes (5 x 180sec.), G=15 minutes (5 x 180sec.), B=15 minutes(5 x 1800sec.))
Camera:ST-237 cooled at -30c
Guiding: ST-4 on ST-80 @f/10
Telescope: f/4 8" newtonian
Mount: Losmandy G-11
Processing:Maxim/DL, Photoshop 6.0
Date:4-04-02 |
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| Using the same raw data as the image above, on this image I applied DDP processing and a mild unsharp mask in Maxim/DL to the luminance frame and manipulated the color curves a bit to reduce the amount of green. Thanks to Mike Chapa for the processing suggestions. |
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