{"id":152,"date":"2005-08-14T00:15:00","date_gmt":"2005-08-14T00:15:00","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2005\/08\/14\/eta_persei_alds\/"},"modified":"2021-11-27T23:00:28","modified_gmt":"2021-11-27T23:00:28","slug":"eta_persei_alds","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2005\/08\/14\/eta_persei_alds\/","title":{"rendered":"Eta Persei (Struve 307)"},"content":{"rendered":"


\nOctober 18, 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

The primary star was a brilliant orange, with a blue-white secondary that picked up a hint of violet from the contrast. The diffraction spikes of the primary ran right over the secondary. I estimated PA at 295\u00c2\u00b0 and separation at 45″. Listed values from the AL double star list are 300\u00c2\u00b0 and 28.3″.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\nDouble\/Multiple Star: Eta Persei (STF 307)<\/td>\n<\/tr>\n
Classification<\/b><\/td>\nMultiple Star<\/td>\n<\/tr>\n
Position<\/b><\/td>\nPerseus [RA: 02:50:42 \/ Dec: +55:54]*<\/td>\n<\/tr>\n
Separation*<\/b><\/td>\n28.3″<\/td>\n<\/tr>\n
Magnitudes*<\/b><\/td>\n3.8, 8.5<\/td>\n<\/tr>\n
Position Angle*<\/b><\/td>\n300\u00c2\u00b0<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\n08\/14\/05 – 12:15 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, 55\u00c2\u00b0F<\/td>\n<\/tr>\n
Seeing<\/b><\/td>\n5\/10<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\nNELM Mag 5.8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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

Eta Persei<\/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":[56,57,67,15],"tags":[],"class_list":["post-152","post","type-post","status-publish","format-standard","hentry","category-double-star","category-sg-double-star","category-sgc-perseus","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":21,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/published_mater\/","url_meta":{"origin":152,"position":0},"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":259,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/08\/04\/ngc_869_and_ngc\/","url_meta":{"origin":152,"position":1},"title":"NGC 869 and NGC 884 – The Double Cluster in Perseus","author":"jperez1690","date":"August 4, 2006","format":false,"excerpt":"NGC 0869 and NGC 0884","rel":"","context":"In "Deep Sky"","block_context":{"text":"Deep Sky","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/deep-sky\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":14,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/double_star_ske\/","url_meta":{"origin":152,"position":2},"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":141,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/08\/01\/doublemultiple_12\/","url_meta":{"origin":152,"position":3},"title":"Eta Cassiopeiae (Struve 60)","author":"jperez1690","date":"August 1, 2005","format":false,"excerpt":"Eta Cassiopeiae","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":372,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/10\/26\/17p_holmes_oct\/","url_meta":{"origin":152,"position":4},"title":"17P \/ Holmes – OCT 26, 2007","author":"jperez1690","date":"October 26, 2007","format":false,"excerpt":"17P\/Holmes 20071025","rel":"","context":"In "Comet"","block_context":{"text":"Comet","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/comet\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":110,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/02\/13\/m34\/","url_meta":{"origin":152,"position":5},"title":"Messier 34","author":"jperez1690","date":"February 13, 2005","format":false,"excerpt":"M034","rel":"","context":"In "Deep Sky"","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\/152","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=152"}],"version-history":[{"count":1,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/152\/revisions"}],"predecessor-version":[{"id":739,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/152\/revisions\/739"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}