{"id":414,"date":"2008-06-30T19:54:54","date_gmt":"2008-06-30T19:54:54","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2008\/06\/30\/struve_1659_the\/"},"modified":"2021-11-28T00:55:08","modified_gmt":"2021-11-28T00:55:08","slug":"struve_1659_the","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2008\/06\/30\/struve_1659_the\/","title":{"rendered":"Struve 1659 &#8211; The Stargate"},"content":{"rendered":"<p style=\"text-align: center\"><a href=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2008\/img2008062102_STF1659lg.jpg\" onmouseover=\"rollover('img2008062102')\" onmouseout=\"rollout('img2008062102')\"><img decoding=\"async\" src=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2008\/img2008062102_STF1659A.jpg\" name=\"img2008062102\" alt=\"Struve 1659 - The Stargate\" border=\"1\" color=\"FFFFFF\"><\/a><br \/>\n<script type=\"text\/javascript\"><br \/>\n<!--\nsetrollover(\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2008\/img2008062102_STF1659B.jpg\");\n\/\/--><br \/>\n<\/script><br \/>\n<i>Move mouse over sketch above to view labels. Click image for larger version.<\/i><\/p>\n<p><b>Observation Notes:<\/b><\/p>\n<p>While making my way to M104 last week, I ran across this startling multiple star. I had read about &#8220;The Stargate&#8221;, but wasn&#8217;t counting on seeing it that night. The nearly symmetrical arrangement of the nested triangles is hard to miss, and difficult to peel my eyes away from once I saw it. One thing that I also noticed was the beautiful colors the stars appeared to display. The two bright central stars seemed to trade yellow and blue back and forth between each other. I finally settled on yellow for the southern and blue for the northern. The fainter star in the inner triangle appeared dull orange.<\/p>\n<p>After preparing a sketch, I went to work with the astrometric eyepiece. The problem was I wasn&#8217;t sure which star was the primary. I decided I&#8217;d use the bright, outer, southern star as primary. I was wrong. The southern <b>inner<\/b> star is considered the &#8220;A&#8221; star. After discovering this difference a few days later, I decided to transfer my measurements using my digital sketch as a measuring tool. I positioned the stars in my digital sketch using the original measurements I took. I then re-measured them from the <i>correct<\/i> A star with the tools Photoshop supplies. Most of my extrapolated measurements correspond nicely with 1998 values from Double stars in astrometric catalogs (Wycoff+, 2006).<\/p>\n<p>Don&#8217;t miss this incredible, colorful multiple star!<\/p>\n<table class=\"objectdata\">\n<tbody>\n<tr>\n<td><b>Subject<\/b><\/td>\n<td class=\"subject\"><b style=\"color: white\">STF 1659 (The Stargate)<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>Classification<\/b><\/td>\n<td>Multiple Star<\/td>\n<\/tr>\n<tr>\n<td><b>Position (J2000)<\/b><\/td>\n<td>Corvus [RA: 12:35:43.5 \/ Dec: -12:01:29]*<\/td>\n<\/tr>\n<tr>\n<td><b>Position Angle*<\/b><\/td>\n<td>\nAB: 354\u00b0 [2008.5 my measurement] || 351.1\u00b0 [1998.25 TMA2003]<br \/>\nAC: 63\u00b0 [2008.5 my measurement] || 69.4\u00b0 [1998.25 TMA2003]<br \/>\nAD: 34\u00b0 [2008.5 my measurement] || 31.4\u00b0 [1998.25 TMA2003]<br \/>\nAE: 274\u00b0 [2008.5 my measurement] || 275.2\u00b0 [1998.25 TMA2003]<br \/>\nAF: 138\u00b0 [2008.5 my measurement] || 140.1\u00b0 [1998.25 TMA2003]<\/td>\n<\/tr>\n<tr>\n<td><b>Separation*<\/b><\/td>\n<td>\nAB: 28&#8243; [2008.5 my measurement] || 27.57&#8243; [1998.25 TMA2003]<br \/>\nAC: 46&#8243; [2008.5 my measurement] || 42.2&#8243; [1998.25 TMA2003]<br \/>\nAD: 198&#8243; [2008.5 my measurement] || 188.98&#8243; [1998.25 TMA2003]<br \/>\nAE: 149&#8243; [2008.5 my measurement] || 154.72&#8243; [1998.25 TMA2003]<br \/>\nAF: 208&#8243; [2008.5 my measurement] || 207.23&#8243; [1998.25 TMA2003]<\/td>\n<\/tr>\n<tr>\n<td><b>Magnitudes*<\/b><\/td>\n<td>Under Review<\/td>\n<\/tr>\n<tr>\n<td><b>Spectral Types*<\/b><\/td>\n<td>A: G0<br \/>\nB: &#8211;<br \/>\nC: &#8211;<br \/>\nD: &#8211;<br \/>\nE: G5<br \/>\nF: F0<\/td>\n<\/tr>\n<tr>\n<td><b>Date\/Time<\/b><\/td>\n<td>JUN 21, 2008 &#8211; 10:00 PM MST (JUN 22, 2008 &#8211; 05:00 UT)<\/td>\n<\/tr>\n<tr>\n<td><b>Observing Loc.<\/b><\/td>\n<td>Flagstaff, Arizona &#8211; Home<\/td>\n<\/tr>\n<tr>\n<td><b>Instrument<\/b><\/td>\n<td>Orion XT8 (203 mm dia.\/1200 mm F\/L)<\/td>\n<\/tr>\n<tr>\n<td><b>Eyepieces\/Mag.<\/b><\/td>\n<td>10 mm Sirius Pl\u00c3\u00b6ssl + 2X Barlow (240X)<br \/>\n12 mm Meade Astrometric EP + 2X Barlow (200X)<\/td>\n<\/tr>\n<tr>\n<td><b>Conditions<\/b><\/td>\n<td>Clear, breezy, pleasant<\/td>\n<\/tr>\n<tr>\n<td><b>Seeing<\/b><\/td>\n<td>6\/10 Pickering<\/td>\n<\/tr>\n<tr>\n<td><b>Transparency<\/b><\/td>\n<td>NELM Mag ~5.0<\/td>\n<\/tr>\n<tr>\n<td><b>*References<\/b><\/td>\n<td>The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996); Double stars in astrometric catalogs (Wycoff+, 2006); The Tycho-2 Catalogue (Hog+ 2000); SIMBAD; Starry Night Pro Plus 5.8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p>Struve 1659<\/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":[56,57,100,15],"tags":[],"class_list":["post-414","post","type-post","status-publish","format-standard","hentry","category-double-star","category-sg-double-star","category-sgc-corvus","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":14,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/double_star_ske\/","url_meta":{"origin":414,"position":0},"title":"Double Star Sketches","author":"jperez1690","date":"August 1, 2004","format":false,"excerpt":"Double Star Sketches","rel":"","context":"In &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/general\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":506,"url":"https:\/\/perezmedia.net\/beltofvenus\/2009\/11\/30\/struve_1374\/","url_meta":{"origin":414,"position":1},"title":"Struve 1374","author":"jperez1690","date":"November 30, 2009","format":false,"excerpt":"Struve 1374","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":88,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/01\/17\/doublemultiple_8\/","url_meta":{"origin":414,"position":2},"title":"Struve 747","author":"jperez1690","date":"January 17, 2005","format":false,"excerpt":"Struve 0747","rel":"","context":"In &quot;Double Star&quot;","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":578,"url":"https:\/\/perezmedia.net\/beltofvenus\/2011\/07\/30\/struve_1575\/","url_meta":{"origin":414,"position":3},"title":"Struve 1575","author":"jperez1690","date":"July 30, 2011","format":false,"excerpt":"Struve 1575","rel":"","context":"In &quot;Double Star&quot;","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":151,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/08\/14\/struve_331_alds\/","url_meta":{"origin":414,"position":4},"title":"Struve 331","author":"jperez1690","date":"August 14, 2005","format":false,"excerpt":"Struve 0331","rel":"","context":"In &quot;Double Star&quot;","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":572,"url":"https:\/\/perezmedia.net\/beltofvenus\/2011\/07\/28\/tau_and_83_leon\/","url_meta":{"origin":414,"position":5},"title":"Tau and 83 Leonis (Struve-A 19 \/ Struve )","author":"jperez1690","date":"July 28, 2011","format":false,"excerpt":"Tau LEO \/ 83 LEO","rel":"","context":"In &quot;Double Star&quot;","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"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\/414","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=414"}],"version-history":[{"count":1,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/414\/revisions"}],"predecessor-version":[{"id":872,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/414\/revisions\/872"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=414"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=414"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=414"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}