Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

NGC 7331 and the Four Dwarfs NGC 7331 A, B, C, D

  • Please log in to reply
9 replies to this topic

#1 Jim Thommes

Jim Thommes

    Fly Me to the Moon

  • ****-
  • topic starter
  • Posts: 5059
  • Joined: 20 Sep 2004
  • Loc: San DiegoCA USA

Posted 21 October 2018 - 10:19 PM

This has been a good season for NGC 7331 with many fine images posted to the forums. I thought to update my older image and add to this years collection.

 

NGC 7331 is the bright member of the Deer Lick group - which is an optical grouping base on relative distances. The other four galaxies are NGC 7335, 7336, 7337, and 7340 and sometimes called the "fleas". All of the "fleas" except for NGC 7336 are, however, part of the physical galaxy group HDC 1198 (distance 276 mly). These "fleas" are not the Dwarfs mentioned in the subject.

 

A 2012 paper on Giant GAlaxies Dwarfs and Debris Survey (GGADDS) by Ludwig et al identified four dwarf galaxy candidates associated with NGC 7331. They can be seen in my image (well at least three can and the fourth is there if you turn your monitor very bright). These are identified as NGC 7331 A, B, C, D and are now included in the Simbad and NED databases. The annotated image shows these dwarfs.

 

The main mage page can be accessed at the link below; the main page has links to a full resolution image and annotated image as well as technical details and information. For convenience, I also provide a link to the annotated image below which shows the Dwarfs as well as several other background galaxies.

 

 

NGC7331_Edge7_PS3-Crp-IP_small.jpg

NGC 7331 and Deer Lick Group

 

 

Annotated Image:
http://www.jthommes....P_annotated.jpg

 

Scope: Celestron 9.25 Edge 235 mm at f/7
Camera: ST8300M (Baader LRGB filters)

 


  • astrokwang2, atalas, Mert and 17 others like this

#2 gunny01

gunny01

    Apollo

  • *****
  • Posts: 1406
  • Joined: 02 Jun 2014

Posted 22 October 2018 - 06:24 AM

  I really like the velvety black background and coloring of the galaxy Jim.  Nice work.



#3 rlsarma

rlsarma

    Mariner 2

  • -----
  • Posts: 209
  • Joined: 24 Aug 2015
  • Loc: Digboi, Assam, India

Posted 22 October 2018 - 06:42 AM

Colors and details are so crisp. Excellent work as always, Jim.

 

Rajib



#4 liors

liors

    Mariner 2

  • *****
  • Posts: 206
  • Joined: 06 Aug 2011
  • Loc: Israel

Posted 22 October 2018 - 06:55 AM

Very nice galaxy and surrounding friendssmile.gif

Great job Jim!!! waytogo.gif

 

Lior


Edited by liors, 22 October 2018 - 06:56 AM.


#5 BenKolt

BenKolt

    Apollo

  • -----
  • Posts: 1470
  • Joined: 13 Mar 2013

Posted 22 October 2018 - 12:23 PM

Well done, Jim.  Nice colors as well!

 

Ben



#6 Jim Thommes

Jim Thommes

    Fly Me to the Moon

  • ****-
  • topic starter
  • Posts: 5059
  • Joined: 20 Sep 2004
  • Loc: San DiegoCA USA

Posted 22 October 2018 - 10:43 PM

Gunny, Rajib, Lior, Ben,

Thanks for the comments.



#7 LYAstro

LYAstro

    Sputnik

  • -----
  • Posts: 44
  • Joined: 16 Oct 2018
  • Loc: Beijing-China

Posted 23 October 2018 - 02:19 AM

The color and details are great´╝ü



#8 Mert

Mert

    Fly Me to the Moon

  • *****
  • Posts: 5346
  • Joined: 31 Aug 2005
  • Loc: Spain, Pamplona

Posted 23 October 2018 - 11:16 AM

Wonderful image, excellent colors and focus!!



#9 atalas

atalas

    Mercury-Atlas

  • -----
  • Posts: 2962
  • Joined: 21 Feb 2005

Posted 23 October 2018 - 08:26 PM

Good work Jim waytogo.gif



#10 Michael Deger

Michael Deger

    Viking 1

  • -----
  • Posts: 582
  • Joined: 11 Jan 2014
  • Loc: Munich/Germany

Posted 24 October 2018 - 02:46 AM

Hi Jim,

 

very nice!

 

All the best

Michael

 

http://www.galaxyphoto.de




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics