{"id":267,"date":"2006-08-20T02:15:00","date_gmt":"2006-08-20T02:15:00","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2006\/08\/20\/ngc_1502_and_st\/"},"modified":"2021-11-27T23:52:23","modified_gmt":"2021-11-27T23:52:23","slug":"ngc_1502_and_st","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2006\/08\/20\/ngc_1502_and_st\/","title":{"rendered":"NGC 1502 and Struve 485"},"content":{"rendered":"

<\/a>
\nClick on image above for larger version (86K).<\/i><\/p>\n

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

This little knot of stars was a stop I made while cruising through Perseus, Cassiopeia and Camelopardalis. As I navigated to the area, I ran into Kemble’s Cascade. It was a pleasant surprise–I’m not very familiar with the area yet. At low magnification, the double star at the center stood out immediately. At 120X, this brilliant white double still dominates the view, providing a spectacular heart to the cluster. The magnitudes of these two stars were equal as far as I could tell. The cluster itself is triangular in shape, looking a bit like a miniature head of Taurus with its snout pointing to the west. A couple other very tight, dissimilar doubles showed off near the center of the cluster (you will need to click the sketch above for a larger version in order to make out those tighter doubles). I plotted 33 stars within the general perimeter of the cluster–35 if you count a couple stragglers. The diameter appeared to be about 9 arc minutes.<\/p>\n

Factoids<\/b><\/p>\n

NGC 1502 was discovered by Friedrich W. Herschel in 1787. Located near the southeast end of Kemble’s Cascade, NGC 1502 is sometimes referred to as the pool into which the cascade tumbles.<\/p>\n

The brilliant double at the heart of the cluster is Struve 485. According to the Washington Double Star Catalog listing in Vizier, the magnitudes of the pair are listed as 6.93\/6.94, with a separation of 17.9″ and a PA of 304\u00c2\u00b0. The Saguaro Astronomy Club Catalog and a number of other sites list magnitudes of 7.0 and 7.1 however.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\nNGC 1502 and Struve 485<\/td>\n<\/tr>\n
Classification<\/b><\/td>\nOpen Cluster (l 3 m) \/ Double Star<\/td>\n<\/tr>\n
Position*<\/b><\/td>\nCamelopardalis [RA: 04:07:49.3 \/ Dec: +62:19:54]<\/td>\n<\/tr>\n
Size*<\/b><\/td>\nNGC 1502: 7.0′<\/td>\n<\/tr>\n
Brightness*<\/b><\/td>\nNGC 1502: 6.9 vMag.
\nStruve 485: 7.0\/7.1<\/td>\n<\/tr>\n
Separation*<\/b><\/td>\nStruve 485: 17.9′<\/td>\n<\/tr>\n
Position Angle*<\/b><\/td>\nStruve 485: 304\u00c2\u00b0<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\nAugust 20, 2006 – 02:15 AM
\n(August 20, 2006 – 09:15 UT)<\/td>\n<\/tr>\n
Observing Loc.<\/b><\/td>\nAnderson Mesa, AZ<\/td>\n<\/tr>\n
Instrument<\/b><\/td>\nOrion SVP 6LT Reflector (150 mm dia.\/1200 mm F\/L)<\/td>\n<\/tr>\n
Eyepieces\/Mag.<\/b><\/td>\n32 mm (37.5X); 10 mm (120X)<\/td>\n<\/tr>\n
Conditions<\/b><\/td>\nPartly Cloudy, Calm<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\n3\/10<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\nMag 6.8+ NELM<\/td>\n<\/tr>\n
*Sources<\/b><\/td>\nNGC\/IC Project<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

*Based on published data.<\/p>\n","protected":false},"excerpt":{"rendered":"

NGC 1502<\/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":[16,56,24,19,57,25,22,91,15],"tags":[],"class_list":["post-267","post","type-post","status-publish","format-standard","hentry","category-deep-sky","category-double-star","category-open-cluster","category-sg-deep-sky","category-sg-double-star","category-sg-open-cluster","category-sg-star-cluster","category-sgc-camelopardalis","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":48,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/10\/14\/m39\/","url_meta":{"origin":267,"position":0},"title":"Messier 39","author":"jperez1690","date":"October 14, 2004","format":false,"excerpt":"M039","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":271,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/08\/28\/ngc_663\/","url_meta":{"origin":267,"position":1},"title":"NGC 663","author":"jperez1690","date":"August 28, 2006","format":false,"excerpt":"NGC 0663","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":104,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/02\/04\/m47_and_ngc_242\/","url_meta":{"origin":267,"position":2},"title":"Messier 47 and NGC 2423","author":"jperez1690","date":"February 4, 2005","format":false,"excerpt":"M047","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":78,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/01\/15\/m41\/","url_meta":{"origin":267,"position":3},"title":"Messier 41","author":"jperez1690","date":"January 15, 2005","format":false,"excerpt":"M041","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":519,"url":"https:\/\/perezmedia.net\/beltofvenus\/2010\/01\/10\/ngc_2169_and_st\/","url_meta":{"origin":267,"position":4},"title":"NGC 2169 and Struve 848","author":"jperez1690","date":"January 10, 2010","format":false,"excerpt":"NGC 2169","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":32,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/10\/03\/m7_ptolemys_clu\/","url_meta":{"origin":267,"position":5},"title":"Messier 7 – Ptolemy’s Cluster","author":"jperez1690","date":"October 3, 2004","format":false,"excerpt":"M007A","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\/267","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=267"}],"version-history":[{"count":1,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/267\/revisions"}],"predecessor-version":[{"id":808,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/267\/revisions\/808"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=267"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=267"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=267"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}