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Old 15-04-2019, 03:04 PM
Startrek (Martin)
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Startrek is offline
 
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,676
NGC 4833 Southern Butterfly Cluster

Lots of passing coastal cloud last night so decided to image a cluster which only need a mediocre amount of data
The Southern Butterfly was also opposite the moon so my OTA would be partially sheltered from the moonshine

30 x 2 minute dithered subs ( had to delete about 10 due to cloud )
15 x darks
ISO 800
Stacked in DSS
Processed in Startools which did a great job cleaning up the image
Guiding was really good 0.80 to 0.99 arc sec error ( my best numbers so far with the new rig ) considering passing cloud and stopping and starting guiding every 10 or 15 minutes
2 images posted original and cropped version
In the original version there’s a really unusual star configuration at the centre top of the image , looks like a snake ?
Cheers
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