NGC 2070 Tarantula Nebula | Astrobiscuit | Page 1

rigid sand Dec 6, 2025, 10:29 PM

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As it seems to always go, when I buy new astro gear, I get the reverse of the astro curse (Astro Blessings I guess). I received my new Antlia ALP-T Ha OIII 3nm filter Friday and put it straight to work that night on, what I feel is, one of the better narrowband targets, Tarantula.
This is my first foray into narrowband imaging, and I have limited experience with processing narrowband data. Enjoy

Gear:
Modified Skywatcher 200pds
EQ6R Pro
ZWO 2600mc pro
ZWO OAG
Touptek GPM 462 guide camera
Antlia ALP-T Dual Narrowband Ha OIII 3nm filter in a ZWO 2" filter drawer

Acquisition:
85 x 3min subs
30 x Flats
30 x Bias
15 x Darks
Bortle 7 location

stiff bison Dec 6, 2025, 10:53 PM

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Holy cow, incredible image! You did a really good job with the processing, especially for having limited experience 👏. Also, random question, what was your gain set to on your main imaging camera? 100?

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And sweet setup btw gigabunny

hollow bluff Dec 6, 2025, 11:12 PM

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Sharp as ever!

stiff bison Dec 6, 2025, 11:29 PM

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Also, what modifications did you do to the skywatcher?

rigid sand Dec 7, 2025, 5:38 AM

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stiff bison Also, what modifications did you do to the skywatcher?

Flocking, baffles, mirror mask, primary rear cover, light leak blocking, focuser re-tension, machined aluminium spider

rigid sand Dec 7, 2025, 5:39 AM

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hollow bluff Sharp as ever!

Could be a bit sharper. Collimation was a little off and seeing was bad

#NGC 2070 Tarantula Nebula