{"id":552,"date":"2010-10-18T23:59:52","date_gmt":"2010-10-18T23:59:52","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2010\/10\/18\/ngc_6572_-_the\/"},"modified":"2010-10-18T23:59:52","modified_gmt":"2010-10-18T23:59:52","slug":"ngc_6572_-_the","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2010\/10\/18\/ngc_6572_-_the\/","title":{"rendered":"NGC 6572 &#8211; The Blue Racquetball"},"content":{"rendered":"<div class=\"imageblock\"><a href=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2010\/img2010090701_NGC6572lg.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2010\/img2010090701_NGC6572.jpg\" alt=\"Sketch of NGC 6572 (The Blue Racquetball)\"><\/a><\/p>\n<p class=\"caption\">Sketch of NGC 6572 (The Blue Racquetball)<br \/>Click image for larger version.<\/p>\n<\/div>\n<p><b>Observation Notes:<\/b><\/p>\n<p>NGC 6572 is a bright and colorful planetary nebula. At low power, it was nearly stellar, and strong blue-green in color. At 240X, it was slightly elongated at a PA of about 165 degrees (NNW-SSE). Although the Ultrablock filter increased contrast a bit, the nebula&#8217;s brightness made it unnecessary. I couldn&#8217;t detect the central star, even at 600X. The seeing could have been better (as usual), but during better moments, an uneven form emerged. I switched back and forth between the Pentax XW10 + 2X Barlow (240X) and 4 mm Orthoscopic (300X) to examine it further. The elongated core gave way to a rhomboid shape which gradually revealed the impression of fat swirls at the nebula&#8217;s north and south ends. The drawing below diagrams how the structure progressively unfolded.<\/p>\n<div class=\"imageblock\"><img decoding=\"async\" src=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2010\/img2010090701_NGC6572diagram.jpg\" alt=\"Gradually revealed structure of NGC 6572\"><\/p>\n<p class=\"caption\">Gradually revealed structure of NGC 6572<\/p>\n<\/div>\n<div class=\"imageblock\"><img decoding=\"async\" src=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2010\/img2010090701_NGC6572dss.jpg\" alt=\"NOAO Photo Comparison of NGC 6572 (The Blue Racquetball)\"><\/p>\n<p class=\"caption\">Sketch\/NOAO Photo Comparison of NGC 6572<br \/>&copy; Bruce Bodner\/Adam Block\/NOAO\/AURA\/NSF<\/p>\n<\/div>\n<table class=\"objectdata\">\n<tr>\n<td><b>Subject<\/b><\/td>\n<td class=\"subject\">NGC 6572<\/td>\n<\/tr>\n<tr>\n<td><b>Other Desig.<\/b><\/td>\n<td>AG+06 2201; BD+06 3649; EM* CDS 964; GC 4390; GCRV 10650; h 2000; HD 166802; IRAS 18096+0650; JCMTSE J181206.2+065114; JCMTSF J181206.2+065114; 2MASX J18120627+0651129; NSV 24329; NVSS J181206+065112; PK 34+11.1; PLX 4174.00; PN ARO 7; PN G034.6+11.8; PN VV 159; PN VV&#8217; 370; PPM 165362; RAFGL 5206S; SCM 192; WB 1809+0650; Blue Racquetball<\/td>\n<\/tr>\n<tr>\n<td><b>Classification<\/b><\/td>\n<td>Planetary Nebula (2a)<\/td>\n<\/tr>\n<tr>\n<td><b>Position*<\/b><\/td>\n<td>Ophiuchus: [18 12 06.365 +06 51 13.01]<\/td>\n<\/tr>\n<tr>\n<td><b>Size<\/b><\/td>\n<td>16&#8243; x 13&#8243;<\/td>\n<\/tr>\n<tr>\n<td><b>Brightness*<\/b><\/td>\n<td>8.1 vMag; 9.0 bMag<\/td>\n<\/tr>\n<tr>\n<td><b>Date\/Time<\/b><\/td>\n<td>SEP 07, 2010, 12:10 AM MST<br \/>(SEP 07, 2010, 0710 UT)<\/td>\n<\/tr>\n<tr>\n<td><b>Observing Loc.<\/b><\/td>\n<td>Home &#8211; Flagstaff, Arizona, USA<\/td>\n<\/tr>\n<tr>\n<td><b>Instrument<\/b><\/td>\n<td>SkyQuest XT8 (8 inch f\/5.9 Dobsonian)<\/td>\n<\/tr>\n<tr>\n<td><b>Eyepieces\/Mag.<\/b><\/td>\n<td>Pentax XW10 + 2X Barlow (240X); UO 4 mm Orthoscopic (300X)<\/td>\n<\/tr>\n<tr>\n<td><b>Conditions<\/b><\/td>\n<td>clear<\/td>\n<\/tr>\n<tr>\n<td><b>Seeing<\/b><\/td>\n<td>5\/10 Pickering<\/td>\n<\/tr>\n<tr>\n<td><b>Transparency<\/b><\/td>\n<td>SQM 20.3<\/td>\n<\/tr>\n<tr>\n<td><b>*Sources<\/b><\/td>\n<td><a href=\"http:\/\/simbad.u-strasbg.fr\/simbad\/sim-fid\" target=\"_blank\" rel=\"noopener\">SIMBAD<\/a>; <a href=\"http:\/\/www.noao.edu\/outreach\/aop\/observers\/n6572.html\" target=\"_blank\" rel=\"noopener\">NOAO<\/a>; <a href=\"http:\/\/www.ngcicproject.org\" target=\"_blank\" rel=\"noopener\">NGC\/IC Project<\/a><\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>NGC 6572<\/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":[16,62,19,42,63,84,15],"tags":[],"class_list":["post-552","post","type-post","status-publish","format-standard","hentry","category-deep-sky","category-planetary-nebula","category-sg-deep-sky","category-sg-nebula","category-sg-planetary-nebula","category-sgc-ophiuchus","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":296,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/10\/27\/ngc_2440\/","url_meta":{"origin":552,"position":0},"title":"NGC 2440","author":"jperez1690","date":"October 27, 2006","format":false,"excerpt":"NGC 2440","rel":"","context":"In &quot;Deep Sky&quot;","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":350,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/08\/15\/ngc_6826_the_bl\/","url_meta":{"origin":552,"position":1},"title":"NGC 6826 &#8211; The Blinking Planetary","author":"jperez1690","date":"August 15, 2007","format":false,"excerpt":"NGC 6826","rel":"","context":"In &quot;Deep Sky&quot;","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":272,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/08\/28\/ngc_7009_the_sa\/","url_meta":{"origin":552,"position":2},"title":"NGC 7009 &#8211; The Saturn Nebula","author":"jperez1690","date":"August 28, 2006","format":false,"excerpt":"NGC 7009","rel":"","context":"In &quot;Deep Sky&quot;","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":360,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/09\/16\/ngc_40\/","url_meta":{"origin":552,"position":3},"title":"NGC 40","author":"jperez1690","date":"September 16, 2007","format":false,"excerpt":"NGC 0040","rel":"","context":"In &quot;Deep Sky&quot;","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":264,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/08\/19\/ngc_6302_the_bu\/","url_meta":{"origin":552,"position":4},"title":"NGC 6302 &#8211; The Bug Nebula","author":"jperez1690","date":"August 19, 2006","format":false,"excerpt":"NGC 6302","rel":"","context":"In &quot;Deep Sky&quot;","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":419,"url":"https:\/\/perezmedia.net\/beltofvenus\/2008\/07\/17\/ngc_6210\/","url_meta":{"origin":552,"position":5},"title":"NGC 6210","author":"jperez1690","date":"July 17, 2008","format":false,"excerpt":"NGC 6210","rel":"","context":"In &quot;Deep Sky&quot;","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\/552","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=552"}],"version-history":[{"count":0,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/552\/revisions"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=552"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=552"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=552"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}