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Slawomir
21-03-2015, 09:51 AM
Ahoy comrades!

I was hoping to capture further detail with longer subs, and this time did not apply noise reduction at all. In total nearly six hours of sky data. Also planning to collect OIII and SII data in the coming weeks.

Full resolution: http://www.astrobin.com/full/165710/0/

Any feedback that would help to improve the image will be very welcomed.

Slawomir
strongmanmike
21-03-2015, 10:14 AM
Nup..nuttin, looks pretty well perfect to me :thumbsup:

Of course, the real challenge comes with the SIIHaOIII combine ;)...good luck!

Mike
RickS
21-03-2015, 11:55 AM
Nice detail, Slawomir. Look forward to the colour version.
rustigsmed
21-03-2015, 02:49 PM
Great stuff Slawomir looking forward to it hitting the plate!
Slawomir
21-03-2015, 11:00 PM
Thank you Russell, Rick and Michael for encouragement.

Since it rains today, I reprocessed the image with the aim of enhancing contrast and reducing noise while maintain detail.

The result is here: http://www.astrobin.com/full/165710/B/

Also tried Drizzle Integration in PI; it worked quite well for me - might be a neat way for up-sizing the images for a larger print.
multiweb
24-03-2015, 08:25 AM
Superb shot. Really good. :thumbsup::thumbsup::thumbsup:
Slawomir
24-03-2015, 11:34 PM
Thank you Marc :)
alistairsam
25-03-2015, 01:08 AM
Looks really good.
I really like the sharpness and detail.
How long were the subs and did you do and decon or sharpening?
that 102mm scope is quite something.

I think a version inbetween the first and the last might be good as the last version is a bit too contrasty and the stars detract from the neb IMO.

Cheers
Alistair
Slawomir
25-03-2015, 07:24 AM
Thank you Alistair for you very kind feedback.

First version (A) was not tempered with by any processing, other than subtracting bias frames and stacking them and of course stretching.

Version B (the one you preferred) has minor noise reduction and soft HDR applied in Pix Insight.

Version C is a result of Drizzle Integration, as well as HDR.

Subs were 500s long.

To be honest, this telescope is just okay with narrowband (useless for RGB), what makes a difference is the 3nm Astrodon filter.

Thanks
Slawomir