{"id":145,"date":"2005-08-02T02:05:00","date_gmt":"2005-08-02T02:05:00","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2005\/08\/02\/doublemultiple_14\/"},"modified":"2021-11-27T22:58:33","modified_gmt":"2021-11-27T22:58:33","slug":"doublemultiple_14","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2005\/08\/02\/doublemultiple_14\/","title":{"rendered":"Iota Trianguli (Struve 227)"},"content":{"rendered":"


\nOctober 17, 2006: To help provide a consistent style for my double star sketches, the above sketch is a digital update to the original sketch.<\/i>
\n<\/p>\n

Observation Notes:<\/b><\/p>\n

This little booger took me by surprise. At low power, it looked like a single star and I thought maybe I was looking at the wrong object. Bumping the magnification, however, revealed two nice, close compadres. The primary was on the west side and was yellow, while the secondary on the east was either white or pale blue. Based on the sketch, I would estimate the position angle at 80\u00c2\u00b0 with a separation of 12″…but with my track record of overestimating separation by a factor of 2 to 3 in my sketches, I’d bet it is more like 4-6″. The actual values from the AL double star list are 71\u00c2\u00b0 and 3.9″ (heheh).<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\nDouble\/Multiple Star: Iota Trianguli (STF 227)<\/td>\n<\/tr>\n
Classification<\/b><\/td>\nDouble Star<\/td>\n<\/tr>\n
Position<\/b><\/td>\nTriangulum [RA: 02:12.24 \/ Dec: +30:18]*<\/td>\n<\/tr>\n
Separation*<\/b><\/td>\n3.9″<\/td>\n<\/tr>\n
Magnitudes*<\/b><\/td>\n5.3, 6.9<\/td>\n<\/tr>\n
Position Angle*<\/b><\/td>\n71\u00c2\u00b0<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\n08\/02\/05 – 2:05 AM<\/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 + 2X Barlow (240X)<\/td>\n<\/tr>\n
Conditions<\/b><\/td>\nPartly cloudy, calm, 59\u00c2\u00b0F<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\n6\/10<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\nNELM Mag 5.2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

*Based on published data.<\/p>\n","protected":false},"excerpt":{"rendered":"

Iota Trianguli<\/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":[56,57,43,15],"tags":[],"class_list":["post-145","post","type-post","status-publish","format-standard","hentry","category-double-star","category-sg-double-star","category-sgc-triangulum","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":87,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/01\/17\/doublemultiple_7\/","url_meta":{"origin":145,"position":0},"title":"Iota Orionis (Struve 752)","author":"jperez1690","date":"January 17, 2005","format":false,"excerpt":"Iota Orionis","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":579,"url":"https:\/\/perezmedia.net\/beltofvenus\/2011\/07\/30\/iota_leonis_str\/","url_meta":{"origin":145,"position":1},"title":"Iota Leonis (Struve 1536)","author":"jperez1690","date":"July 30, 2011","format":false,"excerpt":"Iota LEO","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":300,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/11\/27\/iota_cancri_str\/","url_meta":{"origin":145,"position":2},"title":"Iota Cancri (Struve 1268)","author":"jperez1690","date":"November 27, 2006","format":false,"excerpt":"Iota Cancri","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":21,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/published_mater\/","url_meta":{"origin":145,"position":3},"title":"Published Material","author":"jperez1690","date":"August 1, 2004","format":false,"excerpt":"Updated December 25, 2010 Books Astronomical Sketching: A Step-by-Step Introduction (Patrick Moore's Practical Astronomy Series) By Richard Handy, David B. Moody, Jeremy Perez, Erika Rix, Sol Robbins.Published by Springer, 2007. Contributed three chapters: Comets, Star Clusters, and Nebulae. Stargazing with Binoculars Firefly book by Robin Scagell and David Frydman -\u2026","rel":"","context":"In "General"","block_context":{"text":"General","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/general\/"},"img":{"alt_text":"","src":"http:\/\/www.assoc-amazon.com\/e\/ir?t=thbeofve-20&l=as2&o=1&a=0387262407","width":350,"height":200},"classes":[]},{"id":434,"url":"https:\/\/perezmedia.net\/beltofvenus\/2008\/10\/05\/iota_bootis_str\/","url_meta":{"origin":145,"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":138,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/07\/30\/doublemultiple_10\/","url_meta":{"origin":145,"position":5},"title":"Otto Struve 525","author":"jperez1690","date":"July 30, 2005","format":false,"excerpt":"Otto Struve 525","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\/145","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=145"}],"version-history":[{"count":1,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/145\/revisions"}],"predecessor-version":[{"id":736,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/145\/revisions\/736"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=145"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}