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NGC 2238 Rosette Nebula ( Noisy DSLR )
Last year I imaged this object using a DSLR so haven’t learnt my lesson about trying to image the dim magnitude 9 Rosette Nebula with a DSLR during a warm summer night with average seeing
My Canon 600D was reading 33 deg C on BYEOS
A few test frames looked ok so took about 40 x 3 minute subs and 25 x darks
Dithered each sub and guiding was sub arc second
FOV using my 8” f5 newt and Canon APS-C sensor could only fit about 65% of the whole Nebula too
After stacking in DSS and stretching in Startools , the noise was atrocious and medium to larger stars were bloated
Tried to minimise the noise using many modules and noise reduction but the end result was poor
I’m not going to waist my time on this object anymore unless I have a cooled OSC Camera. If this object was hypothetically around during mid winter , outside air 10deg C and DSLR running at around 17 degrees, the final outcome would be a lot different and worth throwing some late nights into it
Thanks for looking , comments most welcome
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