M63 (2023)

Messier 63 (a.k.a. M63, NGC 5055, or the Sunflower Galaxy) is a spiral galaxy in the constellation Canes Venatici. At approximately 30 million light-years away and 100 thousand across the galaxy contains a central disc surrounded by many short spiral arm segments. It is part of the M51 Group, a group of galaxies that also includes M51 (the 'Whirlpool Galaxy'). Also of note, in 1971, a supernova with a magnitude of 11.8 appeared in one of the arms. The spiral nature of the arms appears to be discontinuous and loose in visible light so it is also considered a flocculent galaxy.

This is a very popular image among astrophotographers so it may be surprising that it is only the second time I imaged this, the first time was an unimpressive attempt from over six years ago. As usual I have three different versions differing mainly in the color and not which is the best. However, I believe this version highlights the fine detail the best. I find these larger galaxies particularly challenging to process due to the color varitions.

I did not collect any hydrogen data but I wish I would have plenty of rich star forming Ha regions in this galaxy. One thing that I did not capture are some newly detected very faint arc star streams believed to be remnents of satellite galaxies distorted by tidal forces. To capture this a faster scope along with darker site would be required or highly recommended.  

I had to trash 120 exposures (one night's worth of data) due to smoke from wildfires in Alberta. Lastly, I seemed to have improved my star shapes by loosing and tightening the screws holding the dew heater ring which may have been pinching the corrector plate.

M63 (2023)
Dates: 5-9-23, 5-10, 5-11, 5-14
Camera: ZWO ASI294MC-Pro
Telescope: Celestron EdgeHD 800
Barlow: None
Focal Length: 2032mm (native), 1400mm
F/10 (native), F/7
Focal Reducer: Celestron 0.7 Reducer Lens
Mount: Orion Atlas Pro
Filter Adaptor: ZWO Filter Drawer
Filter: Optolong Luminosity
Focuser: ZWO EAF
Autoguiding: ASI120 Mini attached to an Orion ST80
Exposure: Lum 383 x 90
Gain: 139
Offset 0
Temp: 0 C
Processing: Asiair app, PixInsight, Photoshop, BlurXT, NoiseXT, StarX, Bill's Color Masks

https://www.instagram.com/astroquest1/
http://astroquest1.blogspot.com/
https://www.astrobin.com/users/kurtzepp/collections/
http://youtube.com/AstroQuest1

NGC 3521 (2023)

This is my version of NGC 3521, a very cool looking spiral galaxy in Leo. I decided to go after this object like I choose most of my objects and that is searching Stellarium. It is a decent size which was important since I was using the AT115 refractor rather than the Edge800. It is 35 million light-years away and 50,000 light-years across. It is quite colorful with pink star-forming regions as well as blue clusters. I was very surprised with the flocculent nature surrounding the core as well as some of the other finer structures in the arms. The other unusual feature of NGC 3521 is that it sits inside fainter bubble-like shells. These shells are believed to be tidal debris from satellite galaxies that have merged with NGC 3521 long ago.

I did crop this image to get a closer view but not too far as I really like the colorful starfield. The better shaped stars are the benefit of the refractor over the SCT but of course you lose out in focal length. Several small galaxies can be spied on in the background as well which is another reason for not cropping too much.

NGC 3521 (2023)
Dates: 4-12-23, 4-13, 4-17, 4-20, 4-21, 4-24, 4-25
Camera: ZWO ASI1600MM-Pro
Telescope: Astro-Tech AT115EDT 115mm Refractor Telescope
Barlow: None
Focal Length: 805mm (644mm w/ FR)
f/7
Focal Reducer: 0.8x AstroTech Field Flatterner/Focal Reducer
Mount: Orion Sirius
Filter Wheel: ZWO
EFW 8 x 1.25"
Filter: None, ZWO R, G, B
Focuser: ZWO EAF
Autoguiding: ASI120 Mini attached to an Agena 50mm Guide Scope/ZWO 60mm Guidescope
Exposure: None 132 x 90, R 94 x 90, G 82 x 90, B 72 x 90
Gain: 139
Offset 20
Sensor Temp: 0 C
Processing: NINA, PixInsight, Photoshop, BlurXTerminator, StarXTerminator, NoiseXTerminator, Bill Blanshan Masks.

https://www.instagram.com/astroquest1/
http://astroquest1.blogspot.com/
https://www.astrobin.com/users/kurtzepp/collections/
http://youtube.com/AstroQuest1

NGC 4725 & NGC 4712 (2023)

Although these galaxies appear close, they are actually quite far apart. NGC 4725 is the closest galaxy at 40 million light-years away and happens to be the smaller one even though it appears larger. It is a barred spiral galaxy over 100 thousand light-years across. Interestingly, the galaxy only has one large arm that makes 2-1/2 revolutions around the core. The arm has many prominent blue regions indicating newborn star clusters. The smaller galaxy, NGC 4712, is larger than NGC 4725 in actual size at 150,000 light-years across but is over 200 million light-years away. I decided to image this by doing a random search on Stellarium and thought it would make a good project with my C8. Ironically, I found many other people that I follow also doing this object - great minds think alike.

There appears to be many smaller galaxies in this Field of View which is not surprising given the location in the constellation of Coma Berenices, a region of space rich in galaxies. NGC 4725 had a surprising amount of detail as did NGC 4712. The central dust lanes are really quite visible and even the faint ones near the core. The colors were fairly easy to pull out without much adjustment, however, that made not going overboard with color saturation difficult especially for me since I tend to saturate to the fullest extent. With this in mind I held back and attempted not to oversaturate.

NGC 4725 & NGC 4712 (2023)
Dates: 4-12-23, 4-13, 4-19, 4-20, 4-25
Camera: ZWO ASI294MC-Pro
Telescope: Celestron EdgeHD 800
Barlow: None
Focal Length: 2032mm (native), 1400mm
F/10 (native), F/7
Focal Reducer: Celestron 0.7 Reducer Lens
Mount: Orion Atlas Pro
Filter Adaptor: ZWO Filter Drawer
Filter: Optolong Luminosity
Focuser: ZWO EAF
Autoguiding: ASI120 Mini attached to an Orion ST80
Exposure: Lum 475 x 90
Gain: 139
Offset 0
Temp: 0 C
Processing: Asiair app, PixInsight, Photoshop, BlurXT, NoiseXT, StarX, Bill's Color Masks

https://www.instagram.com/astroquest1/
http://astroquest1.blogspot.com/
https://www.astrobin.com/users/kurtzepp/collections/
http://youtube.com/AstroQuest1