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Old 09-05-2025, 10:59 AM
Startrek (Martin)
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Startrek is offline
 
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,637
NGC 3576 Statue of Liberty Nebula in Ha only ( WIP )

Finally got down to my rural coastal retirement getaway early April for 2 weeks hoping to get some decent sky time in my NexDome Obs.
Unfortunately the weather was lousy and only managed 2 short clear nights with scattered cloud.
Imaged the Statue of Liberty as it was well placed but only captured a bit of Ha data.

Decided to process what limited Ha data I had as I don’t know whether I can finish the project this year.

Even using a 3nm filter the data was quite noisy due to a Full Moon blasting my Obs and insufficient data to improve SNR.

Bortle 3 Rural Location
Full Moon
Seeing conditions average
Telescope 10” f5 Klaus Helmerich Carbon Fibre Newtonian ( Self Built ) focal length 1280mm
Mount Skywatcher EQ8-R Pro
Imaging camera ZWO2600MM cooled to -10C , Gain 100 HCG
TS Optics GPU coma corrector
Antlia 3nm Ha filter
PHD2 Multistar guiding ( 0.55 to 0.65 arc sec total )
Orion 60mm guide scope with helical focuser
ZWO EFW 7 x 2”
ZWO EAF focuser
Tracking and Goto EQMOD and Stellarium
Aquisition and Capture , APT

Ha 125 x 2 min dithered subs
Full Calibration Suite
Darks from Library
Flats for Ha
Flat Darks for Ha

Total integration 4 hours

Subs reviewed in ASTAP
Data analysed, calibrated , stacked and aligned in ASTAP

Post processed in Startools version 1.8 via Compose module using Luminance / Color : L + Synthetic L from RGB , RGB.
Used Startools SV PSF Deconvolution ( default )

NB: This image is presented as documentary astrophotography and has not use any AI enhanced or AI assisted technology during post processing.

Astrobin link for full resolution……,

https://www.astrobin.com/full/11q6y7/0/

Thanks for Looking

Comments most welcome

Martin
Attached Thumbnails
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Click for full-size image (NGC 3576 Statue of Liberty Nebula Ha Full Moon Synthetic Luminance rev 1C.jpg)
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