63 minutes on M33, ...
 
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63 minutes on M33, Bortle 7 skies, Canon EF 100-400mm Mk II  

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(@stephent)
Main Sequence Star Customer
Joined: 2 years ago
Posts: 27
October 29, 2020 23:33  

Thought this might be of interest to some. 

East Midlands, UK, 22nd October.

63 (of 71) x 60s, ISO 1600, Canon 5D Mk IV + Canon EF 100-400mm MkII at F5.6

30 Flats, 25 Bias & 23 darks.

No filters

M33 ISO 1600 small

 

Obvs more integration needed; weather has been rubbish... but maybe I'll hold off on buying a decent refractor for now after my woes with the SW ED80?????

 

Kind regards

Stephen. 


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3197
October 31, 2020 12:05  

Could you remind me briefly what your woes were about? Usually a refractor is quite nice in the sense of not needing a lot of correction.


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(@stephent)
Main Sequence Star Customer
Joined: 2 years ago
Posts: 27
November 3, 2020 12:41  
Posted by: @vincent-mod

Could you remind me briefly what your woes were about? Usually a refractor is quite nice in the sense of not needing a lot of correction.

Hi Vincent, 

The ED80 "woes" were the the rainbow artifacts from using flats, amplified by field flattener use as discussed here:-

https://www.astropixelprocessor.com/community/main-forum/help-please-something-is-wrong-with-my-integration/#post-13030

So far so good usung the Canon lens. It is a very sharp lens despite being a zoom.

Regards,

Stephen.


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3197
November 4, 2020 14:09  

Ah got it, nice to see you can continue at least now. 🙂


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(@cpl000)
Brown Dwarf Customer
Joined: 5 months ago
Posts: 8
February 10, 2021 03:03  

WOW! Nice shot.


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