This is the second picture I take with the Samyang 135. Processing was complex and slow due to the large size of the image (this time I used drizzle x 2), and the star halo deconvolution, that was leaving behind artifacts difficult to reduce. I am still learning how to deal with this image scale with highly undersampled stars. The last night of observation PHD2 lost connection to the mount and most of the session went unguided. I threw away most of it. I have always experienced reliability issues with the USB hubs, that I never manage to solve completely. After that episode, I have opted for a direct mini-PC connection of all devices.

This is one of the most spectacular areas of the sky for a wide field telescope, that catches better than shorter focals the structure of the galactic Ha clouds with their bubbles and gulfs.

I previously portrayed already some objects included in this image in more detail, for instance the Crescent Nebula NGC6888, the Bubble Soap Nebula Jurasevich 1, the Sh2-106 Bipolar Jet, the Tulip Nebula with the Cygnus X1 bow shock, and this mosaic of the Sadr Area.
After the publication I produced a view of WR134 and an OIII detail of its core.

Here below are more details about some of the objects included. Information has mostly been excerpted by wikipedia, galaxymap.org, simbad.

Sadr, Gamma Cygni
γ Cygni (Gamma Cygni) is a star in the Cygnus constellation. The star is also known by its proper name Sadr (shortened from Arabic صدر الدجاجة, DMG ṣadr ad-daǧāǧa 'breast of the hen') It belongs to the spectral class F8 and has an apparent magnitude of 2.2, making it one of the 100 brightest stars in the night sky. Its distance is about 1800 light years.

Sh 2-108
Galactic Coordinates: (78.18°, 1.8°)
Sh 2-108 is sometimes called the Gamma Cygni nebula because of the foreground appearance of Sadr. In fact this nebula lies far beyond Gamma Cygni in the depths of the Cygnus X complex of star formation regions.
Avedisova includes Sh 2-108 in star formation region SFR 78.18+1.82 along with the supernova remnant DR4, the infrared star cluster [BDB2003] G077.46+01.76 and numerous other nearby HII regions.

NGC6910
Is an open cluster located 3700 ly away.

IC1311
It is an open cluster situated, according recent measurements, about 21000 ly away.

Sh 2-105
NGC 6888, the Crescent nebula, is a wind blown bubble originating from the Wolf-Rayet star WR 136.

Sh2-101
It is the famous Tulip Nebula. Just out of our field on the right, is located the Cygnus X area with the Suspect-Black-Hole bow shock, clearly visible here.

Sh2-104
A 2003 study concludes that about 450 solar masses of gas form a shell around an ionising O6V star at a distance of 12000 ly. A deeply embedded cluster is observed in the near IR inside it, containing at least one massive star ionizing an ultra-compact H II region.

WR 134 and WR 135 (and WR137)
WR 134 is a variable Wolf-Rayet star located around 6,000 light years away from Earth in the constellation of Cygnus, surrounded by a faint bubble nebula blown by the intense radiation and fast wind from the star. It is five times the radius of the sun, but due to a temperature over 63000 K it is 400000 times as luminous as the Sun.
WR 134 was one of three stars in Cygnus observed in 1867 to have unusual spectra consisting of intense emission lines rather than the more normal continuum and absorption lines. These were the first members of the class of stars that came to be called Wolf-Rayet stars (WR stars) after Charles Wolf and Georges Rayet who discovered their unusual appearance.
WR 134 is less than a degree away from WR 135 and the two are believed to lie at approximately the same distance from Earth within the Cygnus OB3 association. Both stars lie within a shell of hydrogen thought to have been swept up from the interstellar medium when one or both stars were on the main sequence. It is unclear which of the two stars is primarily responsible for creating the shell.

B145, B146, B147
Around the gulfs of matter surrounding WR 134 and NGC6871 are visible interesting dark shapes like B145, B146, B147, probably also areeas of star formation.

Sh2-106
Isolated on the left side of the image is Sh2-106, that looks like a planetary nebula but it is not. It is instead a compact emission nebula and a star formation region in the constellation Cygnus. It is a H II region estimated to be around 2,000 ly (600 pc) from Earth.


Picture 1: Ha regions from galaxymap.org


Picture 2: OB areas and stars form galaxymap.org