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Helix nebula bi-colour


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I started this one with 4.5hours of 900sec HA subs but something happened after the 4th 900sec 03 subs and I suspect it was dew all over the secondary mirror. I went ahead and used all the 03 data anyway although I gave it a hammering with the noise reduction before combining them.

17x900sec HA.

10x900sec 03,

Baader 7nm 1.25in ha filter,

Atik 383L+ mono camera,

TS filter drawer,

DIY OAG,

skywatcher 8in f5 reflector,

Celestron CGE mount,

Stacked in DSS and processed in PixInsight and PS.

Bigger version here http://www.flickr.co...in/photostream/

9300089016_5622c40d26_b.jpg

Helix Nebula by Raymond Collecutt, on Flickr

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Thanks everyone. And to think I wasn't going to bother even trying to make a colour picture out of this data. Luckily all the detail is in HA and the 03 was just for a bit of colouring.

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