M17 Swan Nebula in SHO ( Sydney )

[Startrek (Martin)]

Here’s my latest image of M17 Swan Nebula captured over 3 nights late July ( 10 hours integration)
Waning Moon 70% to 20%
Seeing conditions average
Bortle 8 City suburban skies
8”f5 Klaus Helmerich Carbon fibre Newtonian Reflector
Skywatcher EQ6-R pro mount
ZWO 2600MM cooled to -10C , Gain 100
ZWO 7x2” EFW
ZWO EAF
Orion 60mm guide scope with helical focuser
ZWO 120MM guide camera
PHD2 Multistar guiding ( total error avg 0.50 to 0.60 arc sec )
Antlia 3nm Filters
Ha 67 x 3min dithered subs
Oiii 63 x 3min dithered subs
Sii 64 x 3min dithered subs
Darks frames from Library
Flats Ha , Oiii and Sii
Flat Darks Ha, Oiii and Sii
Analysed , Calibrated, Stacked and Aligned in ASTAP
Processed in Startools V1.8 via Compose
Colour HST / SHO preset with saturation and colour bias adjustments

Applied Startools v1.8 Spatially Variant PSF Deconvolution to de blur the image and improve fine detail. It works extremely well to tighten up fine detail but does leave the really faint stars slightly blocky due to coalescing the pixels.

Quite surprised I picked up some dark nebulosity for only 10 hours of data under B8 skies. Thumbs up to those Antlia 3nm narrowband filters, best investment I ever made to combat heavy City / suburban light pollution.

Attached Synthetic Luminance and SHO version ( 200Kb )
Also attached is an OHS version for a bit of fun !!

Astrobin link below for full resolution……..,

https://www.astrobin.com/knglsd/


Comments Welcome
Thanks for looking

Martin

[strongmanmike (Michael)]

That's bluudy good mate!! A very tidy image indeed, so much surrounding gas huh?

I like the last colour palette version best



Mike

[TrevorW]

Yep Nice one Martin

[CoolhandJo (Paul)]

looks great! the 2600mm worked well on that

[Startrek (Martin)]

Thanks Mike , Trev and Paul,
M17 is not an easy target due to that bright core region but Startools tamed it quite well.

Yep after 3 years using the 2600MC and now nearly 12 months using the 2600MM , Mono is definitely superior in every area of astrophotography. Also these Antlia 3nm NB filters are superb at both B8 Sydney skies and B3 South Coast NSW skies, best bang for buck I reckon.

Thanks again
Martin