Simeis 147 (Sh2-240...
 
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May 27 2026 APP 2.0.0-beta45 has been released !

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Update on the 2.0.0 release & the full manual

We are getting close to the 2.0.0 stable release and the full manual. The manual will soon become available on the website and also in PDF format. Both versions will be identical and once released, will start to follow the APP release cycle and thus will stay up-to-date to the latest APP version.

Once 2.0.0 is released, the price for APP will increase. Owner's license holders will not need to pay an upgrade fee to use 2.0.0, neither do Renter's license holders.

 

Simeis 147 (Sh2-240) supernova remnant - 3x2 mosaic

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(@einari)
Main Sequence Star
Joined: 8 years ago
Posts: 20
Topic starter  

After 4 month I finally decided to en this project.

Initially I thought I would take 10 hours per panel, so total of 60 hours, but in the end I got 'only' 45 hours.

Weather in Spain (where we have remote observatory) has been unusually poor this winter, hence the long project. Also this was a joint project with Aarni who also used his imaging nights on this.

Image info:
Sky-Watcher Esprit 100ED, 10 Micron GM 1000 HPS, Atik 460EX, 1400min Ha, 1400min OIII (so HOO palette).

Some words on processing.
Most likely I did processing the 'wrong way' to save processing steps, but luckily I had so good data that I got reasonable result.
So I make 2 processing runs. One for each channel.
I just loaded all 95 files for all 3x2 mosaic pieces together with calibration files and let APP do its magic.
It took over 3 hours to process for each channel, but I think it was lighter task (for me) than process each mosaic panel individually.

Hope you like the result.
Myself I'm glad I have now done this and go forward to normal 'easy' project.

sh2 240 93x15m Ha 95x15m OIII 3x2 mosaic half

 


This topic was modified 6 years ago by einari

   
artem, Mabula-Admin, Kijja and 1 people reacted
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(@kijja)
Black Hole
Joined: 9 years ago
Posts: 149
 

@einari

This is very nice! I admire your great effort in doing this image. Thank you for sharing.

Clear skies,

Kijja

 



   
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(@wvreeven)
Quasar
Joined: 8 years ago
Posts: 2134
 

Incredible image. Well done!

 

Wouter



   
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(@mabula-admin)
Universe Admin
Joined: 9 years ago
Posts: 5318
 

Superb result @einari 🙂

Thank you very much for sharing !

Mabula



   
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(@artem)
Neutron Star
Joined: 8 years ago
Posts: 95
 

very nice! 😍 😍 😍 



   
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