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M51, despite lack of dark and light pollution


Stub Mandrel

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I'm quite happy with this image from last night, I think it's my first galaxy that really shows some detail and colour wiithout having to be over-processed, although it took a fair bit of stretching and gamma adjustment. Stacked in DSS, processing in photoshop and tweaked for noise only in Astra. 101 30-second subs at ISO1600, 50 darks, 17 flats and 30 bias. There was terrible, very fine, colourful noise, but as it was more or less at a single pixel level, Astra was able to knock it on the head with little loss of detail. Canon 450D astro modded, with 150PL, cropped to about 50%.

 

M51.jpg

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