Stephan’s Quintet

Stephan’s Quintet

One of the most studied compact group of galaxies, located in Pegasus constellation. Distant from earth is 290 million light years. Taken with 8 inch RC telescope @f/8 (1600 mm focal length) unguided using MyT mount. Exposure times Lum 76 x 240 seconds, RGB 20 x 240 each channel.

Tulip Nebula

Tulip SHO palette
Hydrogen Alpha starless
Tulip RGB “natural colors”

Tulip Nebula so named for the flowerlike appearance, it is a hydrogen emission nebula. Sharpless101 is located in Cygnus constellation approx 6000 light years distant. Imaged using RC 8 telescope@ f/8 1600mm unguided, MyT mount, QSI 683 camera. Exposure times were Sulfur, hydrogen and Oxygen 900 sec each x 20(5 hrs each channel), LRGB 480 seconds x24or 3.2 hours per channel. total of 27 hours exposure. I included a starless HA image, without stars to distract the nebula is more visible.

LDN 831

LDN 831, 832, 829

Crowded star field and a couple dark nebula, there is a hint of some Ha right center of image though I didn’t chase after it. Very minimal processing just some noise reduction. Taken with 8 inch RC @ f/8 unguided using protrack and MyT mount Lum is 16x 240 seconds RGB is 10 x 240 each channel

Draco Triple

From top to bottom are edge-on spiral galaxy NGC 5981, elliptical galaxy NGC 5982, and a stunning face-on spiral NGC 5985. Distance is approx 130 million light years in constellation Draco. Center galaxy has multiple shells around the core. Plenty of distant dim fuzzy galaxies in the backround. Taken with 8 inch RC telescope @ f/8 unguided using MyT mount and mono ccd. Exposure times are RGB 240 sec x 30 each channel, Luminance is 100 x 240 seconds.

Crescent Nebula

ngc 6888 or crescent nebula

At the center a Wolf-Rayet star and gas from a red giant. The result of stellar wind from the Wolf gives us the Crescent Nebula. Taken with RC8 telescope @ f/8 unguided using protrack and MyT mount. Exposure times HA 900 seconds x34, OIII 900 seconds x 36. HA assigned to red, OIII both green and blue.

Hoag’s Galaxy

Hoag’s Object

Taken with RC8 telescope @ f/8 unguided using Protrack, QSI 683 mono camera, MyT mount. Luminance exposure was best 100 frames (took 186)x480 seconds, RGB 36 each channel x 240 seconds.

Hoag’s Object is a ring galaxy 620 million light years distant in constellation Serpens, the younger blue stars form a ring around the older core of yellow stars. Unseen here but visible in Hubble images there is another ring galaxy inside this ring.

Siamese twins

NGC 4567 & NGC 4568

The Siamese Twins, also known as the Butterfly Galaxies, are a pair of colliding unbarred spiral galaxies located in Virgo constellation. The galaxies lie at a distance of 59.4 million light years and are members of the Virgo Cluster. Imaged using 8inch RC telescope @ F/8 unguided using MyT mount and Protrack. Exposure times 150x 240 seconds for Lum RGB 30 x 240 seconds each channel. Last date imaged was March 31 and I started a new project a few days later a supernova was found in NGC 4568 which is the larger of the two galaxies.

Messier 66

Messier 66 a weak barred spiral in Leo with loosely wound arms, part of the Leo triplet. Imaged using 8 inch RC telescope @f/8 unguided using MyT mount, QSI 683 mono camera. Exposure times LRGB 240 second sub frames x 250. 30 each channel RGB the rest on Lum. 5 hours spent on HA as well, sub frames 900 seconds.

I could have cropped it out I suppose the rainbow diffraction pattern top L of image is created by a magnitude 7 star just out of field of view.

Abell 2151

Abell 2151

Image of Abell 2151 centered on NGC 6045. The cluster contains some 200 galaxies 500 million light years distant. Taken with 8 inch RC telescope, 683 mono camera. Exposure times LRGB 240 second subs 30 each channel RGB, 140 x 240 for Lum.