{"id":279,"date":"2012-06-11T02:00:00","date_gmt":"2012-06-11T02:00:00","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2012\/06\/11\/epsilon_bootis\/"},"modified":"2023-12-25T04:31:24","modified_gmt":"2023-12-25T04:31:24","slug":"epsilon_bootis","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2012\/06\/11\/epsilon_bootis\/","title":{"rendered":"Epsilon Bootis (Izar \/ Struve 1877)"},"content":{"rendered":"
<\/a><\/div>\n

Observation Notes – June 10, 2012:<\/b><\/p>\n

I made a new observation of Izar tonight and confirmed what I suspected: this is my favorite double. The six-inch scope does a perfect job showing off the amazing diffraction pattern. The blue secondary buzzing in the midst of the orange-yellow pattern is stunning and hypnotic. This also gave me an opportunity to measure PA and separation which agreed nicely with WDS 2010 data. If you haven’t observed this incredible pair yet, be sure to give it a look when Bootes is high in the sky.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\nEpsilon Bootis (Izar \/ Struve 1877)<\/td>\n<\/tr>\n
Classification<\/b><\/td>\nDouble Star<\/td>\n<\/tr>\n
Position (J2000)<\/b><\/td>\nBootes [RA: 14 44 59.22 \/ Dec: +27 04 27.21]*<\/td>\n<\/tr>\n
Position Angle*<\/b><\/td>\n343\u00b0 [My Measurement 2012.4]
\n343\u00b0[WDS 2010]*<\/td>\n<\/tr>\n
Separation*<\/b><\/td>\n2.6″ [My Measurement 2012.4]
\n2.8″[WDS 2010]*<\/td>\n<\/tr>\n
Magnitudes*<\/b><\/td>\n2.6 \/ 4.8<\/td>\n<\/tr>\n
Spectral Types*<\/b><\/td>\nK0II-III \/ A2V<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\nJUNE 11, 2012 – 10:20 PM MST (JUNE 12, 2012 – 05:20 UT)<\/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>\nPentax XW10 + 2X Barlow (240X); 12 mm Meade Astrometric EP + 2X Barlow (200X); 4 mm UO Orthoscopic EP + 2X Barlow (600X)<\/td>\n<\/tr>\n
Conditions<\/b><\/td>\nClear, calm<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\n5\/10 Pickering<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\n20.4 mag.\/arcsec^2<\/td>\n<\/tr>\n
*References<\/b><\/td>\nThe Washington Visual Double Star Catalog (Mason+, 2001-2012); 1958PASP…70..168B – Publ. Astron. Soc. Pac., 70, 168-179 (1958) – 01.01.86 23.03.00<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

Observation Notes and Sketch – September 3, 2006:<\/b><\/p>\n

<\/div>\n

This was an awesome pair! There is a brilliant orange-yellow primary with a rich Levi’s blue secondary hugging it. The seeing made it hard to tell, but the first diffraction rings either overlapped slightly or were close to touching. I’ll need to remember to come back to this one.<\/p>\n\n\n\n\n\n\n\n\n\n
Date\/Time<\/b><\/td>\nSEP 03, 2006 – 10:20 PM MST (SEP 04, 2006 – 05:20 UT)<\/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>\n10 mm Sirius Plossl + 2X Barlow (240X)<\/td>\n<\/tr>\n
Conditions<\/b><\/td>\nPartly cloudy, calm<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\n4\/10 Pickering<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\nNELM Mag ~4.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Epsilon Bootis<\/p>\n","protected":false},"author":1,"featured_media":1084,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[56,57,93,15],"tags":[],"class_list":["post-279","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-double-star","category-sg-double-star","category-sgc-botes","category-sketch-gallery"],"jetpack_featured_media_url":"https:\/\/perezmedia.net\/beltofvenus\/wp-content\/uploads\/2012\/06\/img2012052901_EpsilonBOO_md-e1703478663654.jpg","jetpack-related-posts":[{"id":14,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/double_star_ske\/","url_meta":{"origin":279,"position":0},"title":"Double Star Sketches","author":"jperez1690","date":"August 1, 2004","format":false,"excerpt":"Double Star Sketches","rel":"","context":"In "General"","block_context":{"text":"General","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/general\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":278,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/09\/03\/xi_bootis_struv\/","url_meta":{"origin":279,"position":1},"title":"Xi Bootis (Struve 1888)","author":"jperez1690","date":"September 3, 2006","format":false,"excerpt":"Xi Bootis","rel":"","context":"In "Double Star"","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":277,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/09\/03\/pi_bootis_struv\/","url_meta":{"origin":279,"position":2},"title":"Pi Boötis (Struve 1864)","author":"jperez1690","date":"September 3, 2006","format":false,"excerpt":"Pi Bootis","rel":"","context":"In "Double Star"","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":276,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/09\/03\/zeta_bootis_str\/","url_meta":{"origin":279,"position":3},"title":"Zeta Boötis (Struve 1865)","author":"jperez1690","date":"September 3, 2006","format":false,"excerpt":"Zeta Bootis","rel":"","context":"In "Double Star"","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":434,"url":"https:\/\/perezmedia.net\/beltofvenus\/2008\/10\/05\/iota_bootis_str\/","url_meta":{"origin":279,"position":4},"title":"Iota Bootis (Struve 26)","author":"jperez1690","date":"October 5, 2008","format":false,"excerpt":"Iota Bootis","rel":"","context":"In "Double Star"","block_context":{"text":"Double Star","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/double-star\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":290,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/09\/25\/kappa_bootis_st\/","url_meta":{"origin":279,"position":5},"title":"Kappa Boötis (Struve 1821)","author":"jperez1690","date":"September 25, 2006","format":false,"excerpt":"Kappa Bootis","rel":"","context":"In "Double Star"","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\/279","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=279"}],"version-history":[{"count":3,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/279\/revisions"}],"predecessor-version":[{"id":1086,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/279\/revisions\/1086"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media\/1084"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}