NGC 4395 a low surface brightness spiral galaxy. It is notable for containing one of the smallest supermassive black hole with an accurately-determined mass. The central black hole has a mass of “only” 300,000 Sun masses, which would make it a so-called “intermediate-mass black hole”. Taken with 8 inch RC telescope, QSI683 mono camera, astrodon filters, MyT mount. Lum= 4.25 hrs-8 min subs. RGB = 18 x 4 mins or 1.2 hours per channel.
NGC 3521 located in constellation Leo is a flocculent intermediate spiral galaxy 26 million light years away from earth. Yep I was forced to google flocculent, meaning resembling tufts of wool. wiki states it has a morphological classification of SAB(rs)bc, which indicates that it is a spiral galaxy with a trace of a bar structure (SAB), a weak inner ring (rs), and moderate to loosely wound arm structure (bc). A few faint fuzzy galaxies in the frame. I took the time to look up what I could all appear to be approx 36 million light years distant. Taken with 8 inch RC telescope, MyT mount, astrodon filters QSI 683 mono camera. Processed in PixInsight. Lum is 80×8 mins or 10.6 hours RGB is 4 hours each channel.
The Medusa Nebula is a planetary nebula in the constellation of Gemini on the Canis Minor border. It is also known as Abell 21 and Sharpless 2-274. Imaged with 8 inch RC telescope, QSI 683 monocamera, MyT mount,astrodon filters.
8 inch RC telescope- MyT mount- QSI 683 mono camera- astrodon filters exposure times Lum -75 x 30 seconds and 45 x 480 seconds RGB binned 2×2 35 x 30 seconds 35 x 240 seconds
VdB 152: A Ghost in Cepheus
Described as a “dusty curtain” or “ghostly apparition”, mysterious reflection nebula VdB 152 really is very faint. Far from your neighborhood the cosmic phantom is nearly 1,400 light-years away. It lies along the northern Milky Way in the royal constellation Cepheus. Near the edge of a large molecular cloud, pockets of interstellar dust in the region block light from background stars or scatter light from the embedded bright star giving parts of the nebula a characteristic blue color. Ultraviolet light from the star is also thought to cause a dim reddish luminescence in the nebular dust. Though stars do form in molecular clouds, this star seems to have only accidentally wandered into the area, as its measured velocity through space is very different from the cloud’s velocity. This image of the region spans about 7 light-years.- text source APOD.
8 inch RC telescope, QSI 683 mono camera, Astrodon filters, MyT mount.
taken with 8 inch RC telescope MyT mount QSI 683 camera astrodon filters. RGB binned 2×2 4 min sub frames)1 hr each channel Luminance 6 hours (8 min sub frames) Ha 3 hours 15 min sub frames
I don’t find anything doing a quick search on this object. Not much to say I guess. Another area of dark nebula surrounded by some dim hydrogen gas.
LRGB L-6 hours RGB 1.5 hrs each channel RC 8 telescope, QSI 683 mono camera, astrodon filters, MyT mount
A lot going on in this image. Located very close to the far more imaged and well known Messier 42 in Orion Constellation. NGC 1999 is the “keyhole ” and surrounding nebula offset to lower right from center. The entire image has dim hydrogen alpha gas, several Herbig–Haro objects, a couple reflection nebula, and finally “The waterfall nebula” upper left of image. Everything here is quite dim. Sub frames reveal nothing except waterfall nebula stars and NGC 1999 the rest of the gas cannot be seen in 15 min subs. Integration times as follows: 12 hrs Luminance (mix of 15 min and 8 min subs), 16 hrs HA (15 min subs) 3 hrs each RGB (binned 2×2). Total time 36 hrs. Taken with RC8 telescope QSI 683 camera Astrodon filters. Processed in PixInsight. I had quite a difficult time processing this image to start with there were so many airplanes flying through most of the sub frames have at least 1 airplane passing through, some had several. It was a challenge to pull out the faint gas detail in this.
reworked some data fro last year. I like the result a bit more. Different noise reduction, worked the Ha /Lum/ color a little differently The result is nice I think. Here is last prior result you tell me.