M20 - Trifid Nebula (LRGB) from skies Bortle 9 (Reprocessed from scratch) (Ariel Cappelletti)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: B85 · M 20 · NGC 6514 · Sh2-30 · Trifid Nebula

M20 - Trifid Nebula (LRGB) from skies Bortle 9 (Reprocessed from scratch), Ariel Cappelletti

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M20 - Trifid Nebula (LRGB) from skies Bortle 9 (Reprocessed from scratch)

Link: https://flic.kr/p/2j3sAu6

Powered byPixInsight

M20 - Trifid Nebula (LRGB) from skies Bortle 9 (Reprocessed from scratch)

Link: https://flic.kr/p/2j3sAu6

Hi everyone!!!

I reprocessed from scratch the image because I’ve notice that some fine details were lost in some step of the process.

Today I wanted to share with you the First Light of my new Newtonian Telescope, a SW 250 pds (254/1200) F4.7, which turned to be 254/1086 when used with the SW 0.9 Coma corrector, so the setup is a F4.28!!!.

Also, this was an excellent experiment for me, because thanks to Optolong, which gave me a L-Pro filter as a prize of an astrophotography contest, I could test how good can be a LRGB image from skies bortle 9 with employing an anti-pollution filter.

So I stacked the LRGB filters with the L-Pro (wich was screwed on the CC) and the result really amazed me.

I Hope you enjoy it, clear skies!!

Ps1: I leave you here the technical data since here in astrobin I can not describe the stack of filters:

*Gain 100, -25 º C, R-CCD 2" Svbony + L-Pro 2" Optolong, 50x120"

*Gain 100, -25 º C, G-CCD 2" Svbony + L-Pro 2" Optolong, 50x120"

*Gain 100, -25 º C, B-CCD 2" Svbony + L-Pro 2" Optolong, 50x120"

*Gain 100, -25 º C, L 2" Optolong + L-Pro 2" Optolong, 197x120"

PS2: I want to dedicate this image to Diego Gravinese and Juan Filas, two great persons that I have the pleasure to interact with, learn from them, and enjoy with them. Thanks Diego and Juan!!

Astrofotógrafos de Argentina
Light Polluted skies
Broadband under Bortle 7/8/9
ZWO ASI1600MM/QHY163M

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Status	Basic success
Started	...
Astrometry.net job	3529888
PixInsight job	OUL5GQFX8C1ZS21QIU6OLLYLXRPLSWD7
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	18h02m39s.658
RA (top/left)	18h03m46s.930
RA (top/right)	18h00m13s.260
RA (bottom/right)	18h01m32s.688
RA (bottom/left)	18h05m06s.635

Dec (center)	-22°57′48″.98
Dec (top/left)	-22°27′03″.48
Dec (top/right)	-22°51′31″.13
Dec (bottom/right)	-23°28′35″.10
Dec (bottom/left)	-23°03′58″.53

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M20 - Trifid Nebula (LRGB) from skies Bortle 9 (Reprocessed from scratch)

M20 - Trifid Nebula (LRGB) from skies Bortle 9 (Reprocessed from scratch)

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M20 - Trifid Nebula (LRGB) from skies Bortle 9 (Reprocessed from scratch)

M20 - Trifid Nebula (LRGB) from skies Bortle 9 (Reprocessed from scratch)

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