Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)
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Dark Nebula LDN881 in Hα-SII/OIII/OIII+rgb, 



    
        

            Jose Carballada
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Dark Nebula LDN881 in Hα-SII/OIII/OIII+rgb

Getting plate-solving status, please wait...
Dark Nebula LDN881 in Hα-SII/OIII/OIII+rgb, 



    
        

            Jose Carballada
Powered byPixInsight

Dark Nebula LDN881 in Hα-SII/OIII/OIII+rgb

Acquisition details

Dates:
July 21, 2020 ·  July 22, 2020 ·  July 25, 2020 ·  July 26, 2020 ·  July 28, 2020 ·  July 29, 2020
Frames:
Astrodon B Gen.2 E-series 36mm: 90×30(45′) (gain: 75.00) -15°C bin 1×1
Astrodon G Gen.2 E-series 36mm: 90×30(45′) (gain: 75.00) -15°C bin 1×1
Astrodon HA 36mm - 5nm: 205×600(34h 10′) (gain: 200.00) -15°C bin 1×1
Astrodon O-III 36mm - 5nm: 110×600(18h 20′) (gain: 183.00) -15°C bin 1×1
Astrodon R Gen.2 E-series 36mm: 90×30(45′) (gain: 75.00) -15°C bin 1×1
Astrodon S-II 36mm - 5nm: 111×600(18h 30′) (gain: 183.00) -15°C bin 1×1
Integration:
73h 15′
Avg. Moon age:
5.35 days
Avg. Moon phase:
33.86%

RA center: 20h18m42s.92

DEC center: +39°4301.1

Pixel scale: 1.007 arcsec/pixel

Orientation: 90.555 degrees

Field radius: 0.405 degrees

More info:Open 

Resolution: 2328x1726

File size: 6.4 MB

Locations: AAS Montsec, Àger, Lleida, Spain

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

Really beautiful object catalogued as 881 on the Lynds' Catalogue of Dark Nebulae.

It's one of the jewels that you could find on gamma Cygni nebula, on SADR region of Cygnus, one of my favorites regions of the sky.



(credits Aladin)

"A dark nebula or absorption nebula is a type of interstellar cloud that is so dense that it obscures the visible wavelengths of light from objects behind it, such as background stars and emission or reflection nebulae. The extinction of the light is caused by interstellar dust grains located in the coldest, densest parts of larger molecular clouds." (wiki)

It was necessary to integrate more than 70 hours to show all faint and nice details on the estructure.

Here was captured using the more natural palette, please also check my HSO palette on this link:

Comments