{"id":37,"date":"2004-10-04T21:30:00","date_gmt":"2004-10-04T21:30:00","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2004\/10\/04\/m71\/"},"modified":"2021-11-27T18:47:06","modified_gmt":"2021-11-27T18:47:06","slug":"m71","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2004\/10\/04\/m71\/","title":{"rendered":"Messier 71"},"content":{"rendered":"

<\/p>\n

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

Through the 25 mm eyepiece, this globular cluster was dim and small, but still remarkably grainy. It was also elongated. In the 10 mm eyepiece a number of stars showed at the edges and a few across the face. The shape was irregular, and seemed to make a soft arrowhead pointing WSW. An asterism of 4 stars across the surface points WSW too and leads to another line of 3 stars outside, pointing in the same direction. Not sure, but it looks like there is a detached clump of stars to the north with 3 brighter stars involved.<\/p>\n

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

There has been a lot of confusion as to whether M71 should be considered a loose globular, or a dense open cluster. Not just because it is pretty loose for a globular, but also because it has a high metal content (only M69 has more), and it is fairly small at 27 light years across. Currently, it is considered to be a globular. It is 13,000 light years away, and is approaching at roughly 23 km\/sec. M71 was first seen by De Ch\u00e9seaux in 1746, and then catalogued by Charles Messier in 1780, and then first resolved into stars by William Herschel in 1783.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\nM71\/NGC 6838<\/td>\n<\/tr>\n
Classification<\/b><\/td>\nGlobular Cluster<\/td>\n<\/tr>\n
Position<\/b><\/td>\nSagitta [RA: 19:53.8 \/ Dec: +18:47]*<\/td>\n<\/tr>\n
Size*<\/b><\/td>\n7.2′<\/td>\n<\/tr>\n
Brightness*<\/b><\/td>\n8.2<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\n10\/4\/04 – 9:30 PM<\/td>\n<\/tr>\n
Observing Loc.<\/b><\/td>\nFlagstaff, AZ – Home<\/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>\n25 mm (48X); 10 mm (120X)<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\n4\/10<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\nMag 5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

M071<\/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":[16,17,18,19,20,21,22,27,15],"tags":[],"class_list":["post-37","post","type-post","status-publish","format-standard","hentry","category-deep-sky","category-globular-cluster","category-messier","category-sg-deep-sky","category-sg-globular-cluster","category-sg-messier","category-sg-star-cluster","category-sgc-sagitta","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":36,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/10\/03\/m54\/","url_meta":{"origin":37,"position":0},"title":"Messier 54","author":"jperez1690","date":"October 3, 2004","format":false,"excerpt":"M054","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":186,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/09\/25\/m12\/","url_meta":{"origin":37,"position":1},"title":"Messier 12","author":"jperez1690","date":"September 25, 2005","format":false,"excerpt":"M012","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":47,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/10\/14\/m2\/","url_meta":{"origin":37,"position":2},"title":"Messier 2","author":"jperez1690","date":"October 14, 2004","format":false,"excerpt":"M002","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":49,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/10\/15\/m80\/","url_meta":{"origin":37,"position":3},"title":"Messier 80","author":"jperez1690","date":"October 15, 2004","format":false,"excerpt":"M080","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":44,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/10\/14\/m28\/","url_meta":{"origin":37,"position":4},"title":"Messier 28","author":"jperez1690","date":"October 14, 2004","format":false,"excerpt":"M028","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":194,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/10\/02\/m19\/","url_meta":{"origin":37,"position":5},"title":"Messier 19","author":"jperez1690","date":"October 2, 2005","format":false,"excerpt":"M019","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\/37","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=37"}],"version-history":[{"count":1,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/37\/revisions"}],"predecessor-version":[{"id":674,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/37\/revisions\/674"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=37"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=37"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=37"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}