{"id":537,"date":"2010-06-15T23:34:29","date_gmt":"2010-06-15T23:34:29","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2010\/06\/15\/c2009_r1_mcnaug\/"},"modified":"2010-06-15T23:34:29","modified_gmt":"2010-06-15T23:34:29","slug":"c2009_r1_mcnaug","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2010\/06\/15\/c2009_r1_mcnaug\/","title":{"rendered":"C\/2009 R1 (McNaught) &#8211; JUN 15, 2010"},"content":{"rendered":"<div class=\"imageblock\"><A HREF=\"images\/2010\/img2010061501_C2009R1lg.jpg\" onMouseOver=\"rollover('img2010061501')\" onMouseOut=\"rollout('img2010061501')\"><IMG SRC=\"images\/2010\/img2010061501_C2009R1.jpg\" NAME=\"img2010061501\" ALT=\"Sketch of comet C\/2009 R1 (McNaught)\"><\/A><br \/>\n<SCRIPT TYPE=\"text\/javascript\"><br \/>\n<!--\nsetrollover(\"images\/2010\/img2010061501_C2009R1B.jpg\");\n\/\/--><br \/>\n<\/SCRIPT><\/p>\n<p class=\"caption\">Sketch of comet C\/2009 R1 (McNaught)<\/p>\n<p><i>Move mouse over sketch above to view labels.<br \/>Click image for larger version.<\/i><\/p>\n<\/div>\n<div class=\"imageblock\"><a href=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2010\/img2010061502_C2009R1_NElg.jpg\"><img decoding=\"async\" src=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2010\/img2010061502_C2009R1_NE.jpg\"><\/a><\/div>\n<p><b>Observation Notes:<\/b><\/p>\n<p>I really enjoyed the view of the comet this morning with the 8 inch Dob, 15 x 70 binoculars, and naked eye. Through the telescope, the ion tail stretched about 45 arc minutes at PA 305 degrees. The dust tail also appeared as a westward smearing of the coma at a PA of about 270 degrees. The coma itself was a cool turquoise color that contrasted beautifully with an orange 8th magnitude star just to its north. I didn&#8217;t detect a distinct pseudo-nucleus, just a smooth rise in brightness toward the core.<\/p>\n<p>The ion and dust tails showed up through binoculars as well. By comparing to two nearby stars of similar magnitude (TYC3330-3020-1 and TYC3330-2130-1) I estimated its magnitude at 5.7.<\/p>\n<p>It was also visible to the naked eye, appearing as another faint star in Perseus.<\/p>\n<table class=\"objectdata\">\n<tr>\n<td><b>Subject<\/b><\/td>\n<td class=\"subject\">C\/2009 R1 (McNaught)<\/td>\n<\/tr>\n<tr>\n<td><b>Classification<\/b><\/td>\n<td>Comet<\/td>\n<\/tr>\n<tr>\n<td><b>Position*<\/b><\/td>\n<td>Perseus: [RA: &#8212; \/ Dec: &#8211;]<\/td>\n<\/tr>\n<tr>\n<td><b>Size<\/b><\/td>\n<td>Coma: 10 arc minute diameter<br \/>Degree of Condensation: 4<br \/>Ion Tail: 45 arc minutes at 305&deg;<br \/>Dust Tail: 10 arc minutes at 270&deg;<\/td>\n<\/tr>\n<tr>\n<td><b>Brightness*<\/b><\/td>\n<td>est. 5.7 vMag<\/td>\n<\/tr>\n<tr>\n<td><b>Date\/Time<\/b><\/td>\n<td>JUN 15, 2010, 2:45-3:30 AM MST<br \/>(JUN 15, 2010, 09:45-10:30 UT)<\/td>\n<\/tr>\n<tr>\n<td><b>Observing Loc.<\/b><\/td>\n<td>Cinder Hills Overlook, Sunset Crater National Monument, Arizona, USA<\/td>\n<\/tr>\n<tr>\n<td><b>Instrument<\/b><\/td>\n<td>SkyQuest XT8 (8 inch f\/5.9 Dobsonian); 15 x 70 Oberwerk Binoculars; Naked Eye<\/td>\n<\/tr>\n<tr>\n<td><b>Eyepieces\/Mag.<\/b><\/td>\n<td>32 mm Sirius Pl&ouml;ssl, Pentax XW10, Pentax XW10+2X Barlow<\/td>\n<\/tr>\n<tr>\n<td><b>Conditions<\/b><\/td>\n<td>Clear, calm<\/td>\n<\/tr>\n<tr>\n<td><b>Seeing<\/b><\/td>\n<td>2\/10 Pickering<\/td>\n<\/tr>\n<tr>\n<td><b>Transparency<\/b><\/td>\n<td>Mag 7+ NELM<\/td>\n<\/tr>\n<tr>\n<td><b>*Sources<\/b><\/td>\n<td>Starry Night Pro Plus 5.8<\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>C\/2009 R1 (McNaught) 20100615<\/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":[10,45],"tags":[],"class_list":["post-537","post","type-post","status-publish","format-standard","hentry","category-comet","category-sg-comet"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":539,"url":"https:\/\/perezmedia.net\/beltofvenus\/2010\/08\/12\/drawntotheunive_1\/","url_meta":{"origin":537,"position":0},"title":"Drawn to the UniverseAUGUST 2010 &#8211; C\/2009 R1 (McNaught)","author":"jperez1690","date":"August 12, 2010","format":false,"excerpt":"Positive Sketch of C\/2009 R1 (McNaught)Click image to view larger version. Original Negative Sketch of C\/2009 R1 (McNaught)Click image to view larger version. Bright comet C\/2009 R1 (McNaught) is the subject of this month's column. We look at graphite techniques for sketching a comet, and optional digital colorizing of the\u2026","rel":"","context":"In &quot;Article&quot;","block_context":{"text":"Article","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/article\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":226,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/01\/21\/comet_c2005_e2\/","url_meta":{"origin":537,"position":1},"title":"C\/2005 E2 (McNaught) &#8211; January 22, 2006","author":"jperez1690","date":"January 21, 2006","format":false,"excerpt":"C\/2005 E2 (McNaught) 20060122","rel":"","context":"In &quot;Comet&quot;","block_context":{"text":"Comet","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/comet\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":313,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/01\/15\/c2006_p1_mcnaug_2\/","url_meta":{"origin":537,"position":2},"title":"C\/2006 P1 (McNaught) &#8211; JAN 14, 2007 &#8211; Daytime Observation","author":"jperez1690","date":"January 15, 2007","format":false,"excerpt":"C\/2006 P1 (McNaught) 20070114","rel":"","context":"In &quot;Comet&quot;","block_context":{"text":"Comet","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/comet\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":311,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/01\/08\/c2006_p1_mcnaug\/","url_meta":{"origin":537,"position":3},"title":"C\/2006 P1 (McNaught) &#8211; JAN 08, 2007","author":"jperez1690","date":"January 8, 2007","format":false,"excerpt":"C\/2006 P1 (McNaught) 20070108","rel":"","context":"In &quot;Comet&quot;","block_context":{"text":"Comet","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/comet\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":312,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/01\/11\/c2006_p1_mcnaug_1\/","url_meta":{"origin":537,"position":4},"title":"C\/2006 P1 (McNaught) &#8211; JAN 11, 2007","author":"jperez1690","date":"January 11, 2007","format":false,"excerpt":"C\/2006 P1 (McNaught) 20070111","rel":"","context":"In &quot;Comet&quot;","block_context":{"text":"Comet","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/comet\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":315,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/01\/21\/c2006_p1_mcnaug_3\/","url_meta":{"origin":537,"position":5},"title":"C\/2006 P1 (McNaught) Synchronic Bands &#8211; JAN 20, 2007","author":"jperez1690","date":"January 21, 2007","format":false,"excerpt":"C\/2006 P1 (McNaught) 20070120","rel":"","context":"In &quot;Comet&quot;","block_context":{"text":"Comet","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/comet\/"},"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\/537","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=537"}],"version-history":[{"count":0,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/537\/revisions"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}