It’s been quite a few months since I last imaged ( my Wife and I eventually travelled abroad to UK and Malta after COVID put a stop to our plans in 2019 )
Dusted off the rig and imaged M17 under a near full moon with less than ideal conditions ( guiding was atrocious) Heavy dew arrived early into the evening.
Bortle 8 City suburban skies
95% waxing moon
8”f5 Klaus Helmerich Carbon fibre Newt
EQ6-R pro mount
2600MC cooled to -10C , Gain 101
95 x 3 min dithered subs
40 x Flats
60 x Bias
EQMOD and Ascom Stellarium
APT
PHD2 Multistar guiding ( 0.75 to 1.0 arc sec total )
Stacked in DSS
Startools V1.8 Compose OSC Bi Color
Used the 4th SHO mapping in color matrix
Gradients were quite severe which restricted exposing more detail (post Wipe) during final AutoDev
Applied a default ( 10x iterations ) SV Decon with 16 Samples to deblur main structure with resultant white point stars.
Link to Astrobin below …..
https://www.astrobin.com/isvec1/
Attached SHO image and also a Synthetic Luminance version for finer detail
Thanks for looking
Comments welcome
Thanks
M17 Omega (Swan) Nebula under Full Moon
M17 Omega (Swan) Nebula under Full Moon
- Attachments
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- M17 Swan Nebula Synthetic Luminance rev 4.jpeg (380.17 KiB) Viewed 1567 times
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- M17 Swan Nebula SHO Colour rev 2.jpeg (368.01 KiB) Viewed 1576 times
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- Posts: 1166
- Joined: Sun Jun 20, 2021 10:05 pm
- Location: Alta Loma, CA
Re: M17 Omega (Swan) Nebula under Full Moon
Not bad at all Martin, one can't even notice all the difficult conditions you mentioned.
Also, nice little dome photo there in your astrobin.
Also, nice little dome photo there in your astrobin.
Re: M17 Omega (Swan) Nebula under Full Moon
Thanks Mike
Much appreciated
Startools can make ordinary data look good ( well within reason )
Here’s a reprocess with less stretching and a different SHO Color map in the matrix
I kinda like this repro more than the original ( less noise / nebulosity smear around the main body of the object. I sacrificed some finer detail but to me it looks better
Always subjective !
Astrobin link below …..
https://www.astrobin.com/isvec1/B/
Clear skies
Martin
Much appreciated
Startools can make ordinary data look good ( well within reason )
Here’s a reprocess with less stretching and a different SHO Color map in the matrix
I kinda like this repro more than the original ( less noise / nebulosity smear around the main body of the object. I sacrificed some finer detail but to me it looks better
Always subjective !
Astrobin link below …..
https://www.astrobin.com/isvec1/B/
Clear skies
Martin
- Attachments
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- M17 Swan Nebula Synthetic Luminance Final.jpeg (365.14 KiB) Viewed 1537 times
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- M17 Swan Nebula SHO Colour rev 3.jpeg (367.11 KiB) Viewed 1537 times