This is the 3rd year in a row I've tried to nail this space-critter (aka M1). And with almost constant cloud for the last 4 months I count myself fortunate to finally be able to get a few hours worthy of processing.
Taken with (and only remotely possible due to) the L-Ultimate 3nm dual-band pass filter, I was pleased to be able to reveal some of the fascinating structure within this SNR. The original supernova was actually recorded by Chinese astronomers in 1054! It's mind-boggling to think how this SNR has evolved during the last 1000yrs - and imagine what a time-lapse video would reveal over the next 1000!
I can only get line-of-sight for an hour or 2 on its way down and so all the data is taken under 30degrees elevation. I'd love to have a bit more time but I think it's just too far gone for this season so will leave it here for now.
A total of 3hrs with the L-Ultimate (120sec subs) and 30min with RGB (30sec subs). Ha & Oiii channel extraction in APP, and then processed in PI. The atmospheric dispersion was really really pronounced but cleaned up reasonably well using BlurEx - without which I'd only be able to present a starless version. I recombined in both HOO and Foraxx pallet utility, both with RGB stars. Final tidy-up in LightRoom.
Higher res version here:
Foraxx
HOO
C14 non edge @f7 with the Starizona reducer LF
EQ8 pro
Asi2600mc pro gain 100
Asi220mm / celestron OAG
ZWO EAF
ASIAIR pro / APP / PI / LR
Bin2 during capture.
Comments and suggestions welcome!
Thanks for looking.