Skip to content
NGC7331 | Hyperion Astronomy

NGC7331

Introduction

Among the stars of Pegasus, the Winged Horse, are some of the fall sky’s best galaxy groups for backyard observers. Stephan’s Quintet is probably the best-known example of such a compact gathering, comprised of four gravitationally interacting galaxies and a prominent foreground galaxy, projected onto the more distant group by chance. But have you ever heard of the “Deer Lick Group”? No? Well, read on.

A trail blaze on the path to Stephan’s Quintet, NGC 7331 also anchors its own galaxy grouping. It is accompanied by several faint companions, including the smaller spiral galaxies NGC 7335 and NGC 7337, which are probably ten times farther away than NGC 7331. In the 1980s, author Tom Lorenzin bestowed the common name on this galaxy group to honor the Deer Lick Gap, which lies in the mountains of North Carolina. Apparently, Tom had a memorable view of these galaxies from there.

NGC 7335 and NGC 7337 are often erroneously referred to as satellites, but they are not associated with NGC 7331. The two companions glow at around magnitude +14, way too faint for most amateur scopes. NGC 7331, however, can even be spotted with larger binoculars.

Located about 4.5° northwest of Eta Pegasi, near the border of Lacerta, NGC 7331 was discovered in 1784 by William Herschel, and was one of the brightest galaxies overlooked by Messier in his catalog. It appears nearly edge on, tilted at an inclination of 77°. Its structure is remarkably similar to our own Milky Way Galaxy, with a comparable overall mass, spiral structure, distribution of stars, and central supermassive black hole.

Shining with the combined light of a 9th-magnitude star, NGC 7331 appears as a small fuzzy patch when viewed through binoculars. With an 8-inch telescope, a bright core appears and the beginnings of wispy arms. At 12-inches in aperture, spiral patterns emerge, and with good seeing conditions you will observe “patchiness” in the structure. Nebulous areas are revealed and the western half of the galaxy is deeply outlined with a dark dust lane.

credit: http://www.nightskyinfo.com/archive/ngc7331/

Capture Details

Location: Southern Arizona

Telescope: OOUK AG16 @ F/3.8

Mount: Paramount MEII

Camera: Atik 11000

PRISM v10: Planning, Autofocus, Plate Solve, Automation, Automation, Pre-processing

AstroPixel Processor: Post-Processing

Data Details

L: 58 x 300s binned 1x1

R: 12 x 300s binned 1x1

G: 12 x 300s binned 1x1

B: 12: 12 x 300s binned 1x1

 

Previous article How to measure sharpness in your images
Next article M63 The Sunflower Galaxy

Comments

Vikrant Kumar Agnihotri - September 8, 2019

Excellent Image

Leave a comment

Comments must be approved before appearing

* Required fields

★ Judge.me Reviews

Let customers speak for us

30 reviews
87%
(26)
13%
(4)
0%
(0)
0%
(0)
0%
(0)
LE Pyxis

I have received LE Pyxs, very good quality, but does not work with Linux.
But I'm in contact with Optec to get the Linux driver.
We'll see later if it works properly.

Excellent Integrated Package

I bought PRISM v.10 Pro for its integrated capabilities. I did not want to have to "bolt together" different software packages to achieve all my objectives. Two weeks after downloading the software the skies cleared and I was able to use my ZWO CMOS camera and focuser mounted onto a Stellarvue 80mm to move all over the sky finding and taking test shots of Messier objects. I am currently working on deepening my knowledge of what the software can do, particularly pointing models and autoguiding. The look of PRISM is a little outdated - others have mentioned this - but when you discover what you can accomplish with this software package this is easily forgotten. The online tutorials work well to get you off and running and phone support is quite good! I look forward to learning a little bit more each day and to achieving high quality imaging.

Looking forward to trying it!

I bought this in anticipation of using it at my summer home. So it is still unwrapped. It did come highly recommended, and the shipping speed was nothing short of miraculous, so I can't wait to get down to work!

r
EAGLE3
r.h.
Great device and excellent service.

This is my first experience with Hyperion. I had quick shipping and good service. The eagle is an excellent device for controlling my telescope and camera. It is a powerful pc.

M
ECCO
M.R.
Really does the job...

For those who have the Eagle, the ECCO is a great device to monitor and adjust the dew heater. It is very easy to install. You do a short calibration in the advanced settings, be sure the sensor is properly placed, plug in the cables and bingo--all done. Highly recommend it.