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Old 06-10-2023, 01:40 PM
Startrek (Martin)
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NGC 2070 Tarantula Nebula Ha

The strong winds finally abated last night around 8pm leaving a reasonably clear stable moonless evening.
I haven’t imaged the Tarantula with my 10” Newt yet so grabbed a quick one in Ha at low altitudes ( 22 degrees to 33 degrees ) Pretty tired last night so shut down just after midnight.
Guiding was surprisingly good around 0.50 to 0.55 total rms at such low altitudes

Bortle 3
No moon
NexDome Obs
10” f5 Klaus Helmerich Carbon fibre Newt
SW EQ8-R pro mount
ZWO2600MM cooled to -10C , Gain 100
ZWO 7x2” EFW
ZWO EAF
Antlia 3nm Ha filter only
Orion 60mm guide scope
ZWO290MM guide camera

Ha 34 x 3 min dithered subs
Flats
Bias
EQMOD and Stellarium
APT
PHD2 Multistar guiding PPEC algorithm
Stacked in ASTAP
Processed in Startools v1.8

Startools Spatially Variant PSF Deconvolution did a good job at correcting atmospheric blur at these low altitudes

Ha only ( Synthetic Luminance )
Native frame version
Crop version

Astrobin Link below for full resolution……
https://www.astrobin.com/b2ugf0/

Thanks for looking
Comments welcome
Martin
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Old 07-10-2023, 02:06 PM
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xelasnave
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Well Martin you must be very happy with that...you now understand perhaps what I said re the facination when using Ha.
The detail is hard to grasp ...just so good.
It really is wonderful to see how you have pulled it all together.
alex
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Old 07-10-2023, 04:50 PM
Startrek (Martin)
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Quote:
Originally Posted by xelasnave View Post
Well Martin you must be very happy with that...you now understand perhaps what I said re the facination when using Ha.
The detail is hard to grasp ...just so good.
It really is wonderful to see how you have pulled it all together.
alex
Alex,
Thanks for commenting
Hope your well
Extremely happy with my early venture into Mono , especially under dark skies at my Dome
You were so right about the Wow factor using Ha
I put a lot of time into both Mono rigs ( Sydney and South Coast ) and dialing in both 8” and 10” carbon newts. Had to get spacers made up , learn additional requirements in the imaging software , re balancing mount and so on , but all behind me now.
The 2600MM is a tremendous camera and looking forward to more imaging with it. When I get lazy I’ve still got the 2600MC so best of both worlds

Best always
Martin

PS : I had to return to Sydney so missed out on capturing Oiii and Sii data on the Tarantula , maybe next time ?
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Old 08-10-2023, 11:57 AM
matlud (Mathew)
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Looking good Martin, some great detail there and look forward to seeing the final image! CS Mat
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Old 08-10-2023, 01:31 PM
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joshman (Josh)
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That's a great start Martin! I look forward to seeing the final result.
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Old 08-10-2023, 03:25 PM
Startrek (Martin)
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Originally Posted by matlud View Post
Looking good Martin, some great detail there and look forward to seeing the final image! CS Mat
Thanks Mat

Yep nothing beats a good size scope and clear dark skies to suck in those photons
Unfortunately I had to head back to Sydney for Grand-parenting duties from tomorrow, so Tarantula is a works in progress, at least down at my dark site Dome.
I’ll be back down in November for a week

Martin
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Old 08-10-2023, 03:28 PM
Startrek (Martin)
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That's a great start Martin! I look forward to seeing the final result.
Thanks Josh
Enjoying the transition , challenges and improved fidelity from OSC 2600MC to Mono 2600MM
Im back in Sydney now so this Ha image will have to do for the moment ( Grandpa duties)

Thanks again
Martin
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Old 08-10-2023, 08:59 PM
Dave882 (David)
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Super shot Martin! That detail is just sublime. Good thing the LMC is around for a while so plenty of time to finish her off!
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Old 08-10-2023, 09:43 PM
Startrek (Martin)
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Super shot Martin! That detail is just sublime. Good thing the LMC is around for a while so plenty of time to finish her off!
Thanks Dave,
Much appreciated
I rarely image below 30 degrees but this one gave me a big surprise with tight guiding as well, no issues with Ra near the pole.
SV Decon tidied up the image somewhat , very pleased with the result using minimal processing.
Cheers
Martin
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