{"id":447,"date":"2008-12-03T23:26:00","date_gmt":"2008-12-03T23:26:00","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2008\/12\/03\/ngc_7331\/"},"modified":"2021-11-28T01:13:39","modified_gmt":"2021-11-28T01:13:39","slug":"ngc_7331","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2008\/12\/03\/ngc_7331\/","title":{"rendered":"NGC 7331"},"content":{"rendered":"
\"Sketch<\/a><\/p>\n

Sketch of NGC 7331<\/p>\n<\/div>\n

Observation Notes:<\/b><\/p>\n

I have glanced at and passed over this galaxy a number of times on my way to other nearby sights, such as Stephan’s Quintet<\/a>. On this evening, I finally settled down for a nice, long look at it. Although I would have loved to make this observation from a dark site, I’m taking what I can get these days. So I observed from my back yard. There is increased sky glow from the Flagstaff Mall expansion, and some incidental reflected light to deal with, so conditions weren’t ideal. However, for in-town viewing in general it was pretty good. Anyway, those are my excuses. Here’s what I saw.<\/p>\n

With the Pentax XW10 eyepiece (my 2nd sketch with this EP), I had a nice, wide field to frame the galaxy. At a first glance, the galaxy was obviously elongated, but definitely not as large as I anticipated. The larger, outer reaches had to wait a bit for my eyes to adapt better to the dark, spacious recesses of the eyepiece*. As the larger, elliptical shape gradually emerged, it offered a richer view of the galaxy’s overall form. It appeared to be elongated at a PA of 165\u00b0 and was about 6 x 2 arc minutes in size. The bright core had a steep drop in brightness along its west side. The contour of this luminosity decrease appeared to curve just west of the midline and extend toward the tips of the ellipse. On the other side of this contour, a softer glow extended further westward to fill out the elliptical shape. The core itself had a mild plateau in brightness and it’s heart was stellar in appearance. To direct vision and to mildly averted vision, the bright, elliptical region surrounding the core was the only part visible. With more extreme averted vision however, the outer rim of the galaxy simply blossomed into view. It really is a magnificent sight–if you enjoy averted vision delicacies.<\/p>\n

I was not able to extract further detail, or pick up any of the nearby ‘fleas’, but I was very pleased by the overall appearance that the galaxy offered–something like a much smaller M31. My daughter spent some time with me during the observation, talking about a new gobbledygook code language she’s inventing, and about a friend at school who is really getting interested in astronomy. Reminds me that I need to schedule time to visit the kids’ classes this year and do an astro presentation & hopefully daytime moon viewing.<\/p>\n

*Can you tell I love this eyepiece? I don’t consider myself an equipment junkie, but this really is a fantastic observing tool.<\/p>\n

Object Information:<\/b><\/p>\n

NGC 7331 is the brightest member of the NGC 7331 galaxy group, also known as the Deer Lick Group. It was discovered by Friedrich Wilhelm Herschel in 1784. It is also cataloged as: UGC 12113, MCG+06-49-045, H I-53, h 2172, GC 4815, CGCG 514.068, PGC 69327<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\nNGC 7331<\/td>\n<\/tr>\n
Classification*<\/b><\/td>\nGalaxy (Sb I-II)<\/td>\n<\/tr>\n
Position*<\/b><\/td>\nPegasus [RA: 22:37:04.5 \/ Dec: +34:25:01]<\/td>\n<\/tr>\n
Size*<\/b><\/td>\n10.5′ x 3.7′ (PA 171\u00b0)<\/td>\n<\/tr>\n
Brightness*<\/b><\/td>\n9.7 vMag (10.3 bMag)<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\nNOV 30 2008 – 08:30 MST (DEC 1, 2008 – 03:30 UT)<\/td>\n<\/tr>\n
Observing Loc.<\/b><\/td>\nFlagstaff, Arizona, USA – Home<\/td>\n<\/tr>\n
Instrument<\/b><\/td>\nOrion SkyQuest XT8 (203 mm dia.\/1200 mm F\/L)<\/td>\n<\/tr>\n
Eyepieces\/Mag.<\/b><\/td>\nPentax XW 10 (120X)<\/td>\n<\/tr>\n
Conditions<\/b><\/td>\nClear, calm, cold<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\n5\/10 Pickering<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\n~ Mag 6.0 NELM<\/td>\n<\/tr>\n
*References<\/b><\/td>\nNGCIC.org<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

NGC 7331<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[16,28,19,29,32,15],"tags":[],"class_list":["post-447","post","type-post","status-publish","format-standard","hentry","category-deep-sky","category-galaxy","category-sg-deep-sky","category-sg-galaxy","category-sgc-pegasus","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":449,"url":"https:\/\/perezmedia.net\/beltofvenus\/2008\/12\/16\/dissecting_an_o\/","url_meta":{"origin":447,"position":0},"title":"Dissecting an observation of NGC 7331","author":"jperez1690","date":"December 16, 2008","format":false,"excerpt":"Dissecting an observation of NGC 7331","rel":"","context":"In "Article"","block_context":{"text":"Article","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/article\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":558,"url":"https:\/\/perezmedia.net\/beltofvenus\/2011\/01\/01\/ngc_147\/","url_meta":{"origin":447,"position":1},"title":"NGC 147","author":"jperez1690","date":"January 1, 2011","format":false,"excerpt":"Sketch of NGC 147Click image for larger version. Observation Notes: NGC 147 fits tightly with NGC 185 in the same field with my 32 mm Plossl. At 120X through the Pentax XW10, it appeared as a large and very soft brightening of the sky background with a star superimposed over\u2026","rel":"","context":"In "Deep Sky"","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":486,"url":"https:\/\/perezmedia.net\/beltofvenus\/2009\/09\/20\/m88_ngc_4501\/","url_meta":{"origin":447,"position":2},"title":"Messier 88 (NGC 4501)","author":"jperez1690","date":"September 20, 2009","format":false,"excerpt":"M088","rel":"","context":"In "Deep Sky"","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":493,"url":"https:\/\/perezmedia.net\/beltofvenus\/2009\/10\/03\/messier_89_ngc\/","url_meta":{"origin":447,"position":3},"title":"Messier 89 (NGC 4552)","author":"jperez1690","date":"October 3, 2009","format":false,"excerpt":"M089","rel":"","context":"In "Deep Sky"","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":422,"url":"https:\/\/perezmedia.net\/beltofvenus\/2008\/07\/25\/ngc_5866_m102\/","url_meta":{"origin":447,"position":4},"title":"NGC 5866 (Messier 102)","author":"jperez1690","date":"July 25, 2008","format":false,"excerpt":"NGC 5866","rel":"","context":"In "Deep Sky"","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":487,"url":"https:\/\/perezmedia.net\/beltofvenus\/2009\/09\/21\/m91_ngc_4548\/","url_meta":{"origin":447,"position":5},"title":"Messier 91 (NGC 4548)","author":"jperez1690","date":"September 21, 2009","format":false,"excerpt":"M091","rel":"","context":"In "Deep Sky"","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/447","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/comments?post=447"}],"version-history":[{"count":1,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/447\/revisions"}],"predecessor-version":[{"id":894,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/447\/revisions\/894"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}