Quote:
Originally Posted by evltoy
Nice image Paul... well done
I tried to hit this target last night, but it seems after stacking 90 subs at 40sec I cant pick up any Nebuleas!
Should it be as easy to see like M42? With M42 I can do a 30sec exposure and see the Nebulea on my DSLR review screen clear as day for framing.
And advice would help
Cheers
Wayne
Celestron Evo8
Home made EQ wedge
ZWO 60280 Guide/Finder Scope
ZWO ASI462 - Planets/Guiding
Nikon D80 DSLR - DSO
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Wayne
M42 has an apparent magnitude of 4 ( very bright )
Rosette Nebula is magnitude 9 ( very dim )
The moon is up at moment which doesn’t help, unless your imaging in the wee hours, so you have moon glare to contend with unless you have a narrowband filter for your DSLR
40 sec subs on a DSLR will struggle to provide enough dynamic range to expose any decent amount of nebulosity
Try 90 sec or 120 sec subs as a minimum, the trouble is once you start increasing sub lengths on a DSLR you introduce a lot of noise too. So lots of subs, dithering and darks will help reduce the noise floor.
I’ve never been successful imaging the Rosette with my Canon 600D but with a cooled OSC camera like my 2600MC , no issue at all
Martin