M81 & M82

[cloudbuster]

hi all:)

please find attached a quick stretch of my recent M81 M82 effort, which suffers from a number of problems, perhaps most noticeable of which is coma. I will update this thread with the full processed version as and when i can...in the meantime, here's the details...c&c welcome:

peasedown st john 18.2.12

skywatcher 200pds 8"

Canon 40d

CLS light pollution filter

800 asa

31 subs 5 min

30 flats 1/90 tv mode

29 darks 5 min

40 bias 1/8000th sec

stacked in DSS

Processed in Pixinsight

...and not forgetting to thank Andy UK for all his help...appreciated muchos!

cheers

bob

[malc-c]

...and not forgetting to thank Andy UK for all his help...appreciated muchos!

cheers

bob

LOL - what a coincidence, Andy has been helping me out with processing my data on M81 too

Nice image there Bob, having darker skies than me seems to of helped bring out the wispy bits in the arms of the galaxy

[AndyUK]

Looking very good Bob...!

You've got some nice whispy detail in the M81 spiral, as well as an indication of the Ha filaments in M82 showing through... To my eye there is a slight gradient towards the left side, which is a little bemusing since the flats were taken with an EL panel (), but regardless you can easily remove that with DBE...

[Zul]

Great shot!