u/Level_Access_5014

It's missing some color, but I don't know how to best add it to this photo. Any thoughts?

The Crescent Nebula (aka: Caldwell 27, C 27, NGC 6888) is an emission nebula in the constellation Cygnus, the Swan. The Crescent Nebula was discovered by the German-British astronomer William Herschel in 1792. This stellar demolition zone lies within our own galaxy, about 4,700 light-years from Earth.

NGC 6888 is a visually interesting object. It’s about 25 x 50 light years across. Its halo is unevenly illuminated, the brightest portion an arc along the north side. The arc is most conspicuous on its northeast, just where it begins a sharp curve to the south. A multitude of Milky Way field stars shine through the nebula, including a bright keystone star forming the east side and two bright stars forming the west.

NGC 6888 is formed by a fast stellar wind from the Wolf-Rayet star HD 192163, also known as WR 136. The star is shedding its outer envelope, ejecting the equivalent of the Sun's mass every 10,000 years. This stellar wind is colliding with, and energizing, a slower-moving wind ejected by the star when it became a red giant around 400,000 years ago. The result of the collision creates its “shell”. Two shock waves, one moving outward and one moving inward, heats the stellar wind to X-ray-emitting temperatures. The central star WR 136 will probably undergo a supernova explosion sometime in the next million years.

From Phoenix, AZ (29 Jun 26); Bortle +8, w/Dwarf3
I took 436 images; used 414 images, 45s, gain 80, duo filter
Edited with Luminar Mobile and iPad

Mosiac (1.4x1.7) of North American Nebula and IC 5070; used 444 of 480 images 45s, gain 70; edited in Luminar Mobile and iPad ; also included the original out of Stellar Studio (from Dwarf3 w/star reduction)

The Blowdryer Galaxy (aka: Messier 100, M100) is a beautiful spiral galaxy, and one of the brightest in the Coma-Virgo. Like M 98 and M 99, Messier 100 was first seen by Pierre Mechain in 1781. Mechain's observations confirmed later that year by Charles Messier, who added it as the 100th object in his catalog. The galaxy's spiral structure was first detected by Lord Rosse with his six-foot reflector in 1850, and was listed as one of the 14 "spiral nebulae" known up to that time. M 100 is one of the brightest members of the Virgo Cluster of galaxies. It is located in the spring constellation Coma Berenices. M 100 has a bright, small core with an oval halo. The halo is generally smooth and its edges diffuse, but some variation in brightness can be seen around the core.

Images reveal the "grand design" spiral structure of M 100 which is like our Milky Way, and tilted nearly face-on as seen from Earth. The galaxy has two prominent arms of bright blue stars, and several fainter arms. The blue stars in the arms are massive, hot, young stars. Deep space photographs of M 100 have revealed that M 100 is actually much larger than it appears, and that a significant part of the its mass may lie in the faint outer regions.

M 100 has been imaged extensively by the Hubble Space Telescope, which has led to the discovery of over 20 Cepheid variables. This, in turn, provided the first reliable distance determination for M 100 of 56 million light years. M 100 is probably the largest spiral in the Virgo-Coma Galaxy Group, with a diameter over 130,000 light-years. M 100 is exceptionally luminous, with a luminosity equivalent to 83 billion of our suns.

Intense star formation activity is taking place in a ring of starburst activity along the periphery of M 100's innermost spiral arms. There have been several supernovae observed in this galaxy: 1901B, 1914A, 1959E, 1979C, and 2006X.

Taken from Phoenix, AZ (13 Jun 26); Bortle 5 with Dwarf 3
I used 302 out of 362 images; each 45s, gain 60, Astro Filter
Edited with Luminar Mobile and iPad

Aufgenommen mit einem iPhone und bearbeitet in Luminar.

I feel that if I had tried doing it manually, I wouldn't have achieved even 50 percent of this result.

The Southern Pinwheel (aka: Messier 83, M83, NGC 5236) is a spiral galaxy in the constellation Hydra. It is one of the closest and brightest spiral galaxies in the sky. It was discovered by Nicholas Louis de Lacaille at the Cape of Good Hope in 1752. It was the third galaxy discovered, after M 31 and M 32. Charles Messier added M 83 to his catalogue in 1781.

M 83 is one of the showpieces of the southern sky. It is very difficult for northern observers to view due to its southern declination. It is a large face-on barred spiral galaxy with an oval core encircled by an interesting spiral arms. The spiral arms are divided by tiny dark lanes. A dozen foreground stars are superimposed upon the galaxy's disk.
For years, M 83 was the galaxy with most supernovae discovered.

M 83 is about 15 million light years away, and its diameter is over 100,000 light years. M 83's has the luminosity of 36 billion suns. It is receding at 337 km/sec.
M 83 is at the center of one of two subgroups within the Centaurus Group of galaxies.

M 83 displays a very dynamic appearance, with red and blue knots tracing out its arms. The red knots are diffuse gaseous nebulae where star formation is taking place, energized by very hot, young stars within them. The blue regions represent young stellar populations which have formed just a few million years ago. The nucleus is composed of an older, yellowish stellar population which dominates the whole central region.

Taken from Lake Tahoe, CA (7 Jun 26); Bortle 5
I took 104 images and used 76, 45s each, gain 60, Astro Filter
Edited with Luminar Mobile and iPad