Sharpless 112_SHO

[MariusD69]

Hello!
Sh2-112 is a nebula from Cygnus (perhaps the richest constellation in emission nebulae), with an apparent size of 13', close to Deneb. Ha is dominant, compared to it, OIII has about 10% of intensity, and SII about 5% (not even seen during capture).
Total exposure: 16 hours and 55 minutes: Ha 94x5m, OIII 44x5m, SII 53x5m (for oxygen and sulfur I should have doubled the number of frames, but I didn't have the patience and I processed what I had). For stars, a minimum RGB, 20 frames of one minute for each channel. The clarity was not very good for Ha (the one who gives the details) and I did not make a selection of frames, to still have a better SNR.
The capture lasted for ten nights (a very poor yield), in some nights I did not gather even an hour exposure until dawn, due to the clouds. Thursday night I sat in vain waiting for the clear sky promised in the forecast, checking the sky on the monitor every half hour. Only last night I went full, four and a half hours until dawn, shooting SII.
Setup: newt Sw 150/750, ASI1600MM Pro. Filters: Baader 7nm Ha, Baader 8nm SII, Astronomik 6nm OIII, Baader RGB.
Clear skies!

[messier 111]

wow nice take , thx .

[Johnny Carter]

Beautiful, so much to see and just beautiful.

[BABOafrica]

Wow and wonderful.

Pretty sure I've never seen this object before. And it just gorgeous. So I'm asking myself: where has this one been hiding?

With a 13' size, it's not exactly one of those tiny things like the Ring Nebula (which is only 2').

Perhaps the telling tale that explain this image is the 16 hours on target.

BABO

[KathyNS]

That's a beauty!

Also a new one for me. I might have to have a go at that one.

[STEVE333]

Very nice Marius. Lovely colors and details. Even with all that time on target I notice there is still a bit of noise. Must be a very faint target!

Have you tried NoiseXTerminator yet? It does an amazing job at reducing/eliminating noise in both the linear and non-linear data! They have a free trial (one month I think). Just FYI.

Steve

[MariusD69]

Thank you all.
@STEVE333 Yes, the stack of Ha was still noisy, although I had 94 frames (maybe it needed 150+). I use it as a luminanace layer over SHO image, so only this matter for details and noise. I use MureDenoise and MMT in linear state, then in nonlinear: "Deep Sky noise reduction" (From Astronomy Tools from PS) and Topaz DenoiseAI. But I didn't wanted to clean perfectly the image (affects some small detail, too), so I didn't use them at full power. Still, I just bought NoiseXterminator, to have the complete collection.

[STEVE333]

Thank you all.
@STEVE333 Yes, the stack of Ha was still noisy, although I had 94 frames (maybe it needed 150+). I use it as a luminanace layer over SHO image, so only this matter for details and noise. I use MureDenoise and MMT in linear state, then in nonlinear: "Deep Sky noise reduction" (From Astronomy Tools from PS) and Topaz DenoiseAI. But I didn't wanted to clean perfectly the image (affects some small detail, too), so I didn't use them at full power. Still, I just bought NoiseXterminator, to have the complete collection.

Please let me know how you like NoiseXTerminator. I find it works better then MureDenoise for me.

Steve

[Juno16]

Just beautiful Marius!

New one on me too. Can’t find it in SkySafari.

You colors are quite nice. I can’t see any noise, but I can’t find my glasses!

Steve @STEVE333 is right, NXT is an outstanding application!

[Mac]

That's a great capture Marius.

[Jockinireland]

Thats a great image. A new target for me also. Love the colours