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M1 - same Crab nebula. With the dob's tube.

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Yet another Crab nebula, but this one is mine :)

Acquisition details:

Scope: SkyWatcher 8" dob tube. 200/1200
Corrector: SkyWatcher coma corrector, reducing the focal length to ~1085mm
Mount: EQ6-R
Camera: ASI1600MMC, all frames cooled to -25C
Guiding: OAG with ASI120MM and iR pass filter (642nm pass I believe)
ZWO RGB, Baader 685nm iR pass, Optolong Ha 7nm and Optolong OIII 6.5nm
Exposure: ~8h of Ha, ~8h of OIII, ~2h each RGB and iR, October-November.

Original thread here:


Thanks for watching!



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