{"id":284,"date":"2006-09-04T01:10:00","date_gmt":"2006-09-04T01:10:00","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2006\/09\/04\/zeta_lyrae_stru\/"},"modified":"2006-09-04T01:10:00","modified_gmt":"2006-09-04T01:10:00","slug":"zeta_lyrae_stru","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2006\/09\/04\/zeta_lyrae_stru\/","title":{"rendered":"Zeta Lyrae (Struve 38)"},"content":{"rendered":"<p style=\"text-align: center\"><img decoding=\"async\" src=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2006\/img2006090402_ZetaLYR.jpg\" border=\"1\" color=\"ffffff\"><\/p>\n<p><b>Observation Notes:<\/b><\/p>\n<p>This double was fairly wide&#8211;about 60 arc seconds by my estimate. The WDS value from 1835 is 43.7 arc seconds. PA appeared to be about 155\u00c2\u00b0 which compares to 150\u00c2\u00b0 from the WDS. Color was a bit elusive, but if anything, the primary appeared light yellow with a light blue secondary. According to CSSC\/Skiff, the primary is A3 and the secondary is F0V. So the combo is actually light blue and white.<\/p>\n<table width=\"470\" border=\"1\" cellspacing=\"0\" cellpadding-left=\"4\">\n<tr>\n<td><b>Subject<\/b><\/td>\n<td>Zeta Lyrae (STF 38)<\/td>\n<\/tr>\n<tr>\n<td><b>Classification<\/b><\/td>\n<td>Double Star<\/td>\n<\/tr>\n<tr>\n<td><b>Position (J2000)<\/b><\/td>\n<td>[RA: 18:44:46.3 \/ Dec: +37:36:18]*<\/td>\n<\/tr>\n<tr>\n<td><b>Position Angle*<\/b><\/td>\n<td>150\u00c2\u00b0 (1835)<\/td>\n<\/tr>\n<tr>\n<td><b>Separation*<\/b><\/td>\n<td>43.7&#8243; (1835)<\/td>\n<\/tr>\n<tr>\n<td><b>Magnitudes*<\/b><\/td>\n<td>4.36\/5.73<\/td>\n<\/tr>\n<tr>\n<td><b>Spectral Types*<\/b><\/td>\n<td>A3\/F0V<\/td>\n<\/tr>\n<tr>\n<td><b>Date\/Time<\/b><\/td>\n<td>SEP 04, 2006 &#8211; 1:10 AM MST (SEP 04, 2006 &#8211; 08:10 UT)<\/td>\n<\/tr>\n<tr>\n<td><b>Observing Loc.<\/b><\/td>\n<td>Flagstaff, AZ &#8211; Home<\/td>\n<\/tr>\n<tr>\n<td><b>Instrument<\/b><\/td>\n<td>Orion SVP 6LT Reflector (150 mm dia.\/1200 mm F\/L)<\/td>\n<\/tr>\n<tr>\n<td><b>Eyepieces\/Mag.<\/b><\/td>\n<td>10 mm + 2X Barlow (240X)<\/td>\n<\/tr>\n<tr>\n<td><b>Conditions<\/b><\/td>\n<td>Clear, calm<\/p>\n<tr>\n<td><b>Seeing<\/b><\/td>\n<td>5\/10<\/td>\n<\/tr>\n<tr>\n<td><b>Transparency<\/b><\/td>\n<td>NELM Mag ~4.0<\/td>\n<\/tr>\n<tr>\n<td><b>References<\/b><\/td>\n<td>The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996) and Catalogue of Stellar Spectral Classifications (Skiff, 2005) via <a href=\"http:\/\/vizier.u-strasbg.fr\/viz-bin\/VizieR\" target=\"_blank\" rel=\"noopener\">VizieR<\/a><\/td>\n<\/tr>\n<\/table>\n<p>*Based on published data.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zeta Lyrae<\/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":[56,57,71,15],"tags":[],"class_list":["post-284","post","type-post","status-publish","format-standard","hentry","category-double-star","category-sg-double-star","category-sgc-lyra","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":284,"position":0},"title":"Double Star Sketches","author":"jperez1690","date":"August 1, 2004","format":false,"excerpt":"Double Star Sketches","rel":"","context":"In 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