{"id":171,"date":"2005-09-12T23:45:00","date_gmt":"2005-09-12T23:45:00","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2005\/09\/12\/zeta_aquarii_al\/"},"modified":"2005-09-12T23:45:00","modified_gmt":"2005-09-12T23:45:00","slug":"zeta_aquarii_al","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2005\/09\/12\/zeta_aquarii_al\/","title":{"rendered":"Zeta Aquarii (Struve 2909)"},"content":{"rendered":"

<\/p>\n

Sketch Refinement<\/b><\/p>\n

Above is the cleaned up sketch that was submitted to Sky and Telescope for the September 2006 issue.<\/p>\n

\n

September 12, 2005 Observation<\/b><\/p>\n

<\/p>\n

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

These two were so very close and perfectly similar, it was a very cool double. The PA is either 360\u00c2\u00b0 or 175\u00c2\u00b0, depending on which star is the primary. At first, the color for both appeared to be white, but after further examination, I believe the north star is a subtle yellow. They each sat on each other’s first diffraction ring, leading me to believe the separation is approximately 1.3\u00c2\u00b0 (the actual value is 1.8\u00c2\u00b0). The listed PA of 266\u00c2\u00b0 is vastly different than the 360\/175\u00c2\u00b0 I estimated.<\/p>\n

The sketch is deceptive. To indicate brightness, I drew the star circles bold. This made me have to push the stars apart to keep them separated. So they were actually tighter and closer in the 240X FOV than they appear in the sketch.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Subject<\/b><\/td>\nDouble\/Multiple Star: Zeta Aquarii (STF 2909)<\/td>\n<\/tr>\n
Classification<\/b><\/td>\nDouble Star<\/td>\n<\/tr>\n
Position<\/b><\/td>\nAquarius [RA: 22:28:48 \/ Dec: +00:01]*<\/td>\n<\/tr>\n
Separation*<\/b><\/td>\n1.8″<\/td>\n<\/tr>\n
Magnitudes*<\/b><\/td>\n4.3, 4.5<\/td>\n<\/tr>\n
Position Angle*<\/b><\/td>\n266\u00c2\u00b0<\/td>\n<\/tr>\n
Date\/Time<\/b><\/td>\n09\/12\/05 – 11:45 PM<\/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>\nClear, breezy, 55\u00c2\u00b0F<\/p>\n
Seeing<\/b><\/td>\n5\/10<\/td>\n<\/tr>\n
Transparency<\/b><\/td>\nNELM Mag 4.8<\/td>\n<\/tr>\n<\/table>\n

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

Zeta Aquarii<\/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":[56,57,31,15],"tags":[],"class_list":["post-171","post","type-post","status-publish","format-standard","hentry","category-double-star","category-sg-double-star","category-sgc-aquarius","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":176,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/09\/20\/sketching_close\/","url_meta":{"origin":171,"position":0},"title":"Sketching Close Double Stars","author":"jperez1690","date":"September 20, 2005","format":false,"excerpt":"Sketching Close Double Stars","rel":"","context":"In "Tools and Techniques"","block_context":{"text":"Tools and Techniques","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/tools-and-techniques\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":172,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/09\/13\/94_aquarii_alds\/","url_meta":{"origin":171,"position":1},"title":"94 Aquarii (Struve 2998)","author":"jperez1690","date":"September 13, 2005","format":false,"excerpt":"94 Aquarii","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":14,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/double_star_ske\/","url_meta":{"origin":171,"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":226,"url":"https:\/\/perezmedia.net\/beltofvenus\/2006\/01\/21\/comet_c2005_e2\/","url_meta":{"origin":171,"position":3},"title":"C\/2005 E2 (McNaught) – January 22, 2006","author":"jperez1690","date":"January 21, 2006","format":false,"excerpt":"C\/2005 E2 (McNaught) 20060122","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":21,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/published_mater\/","url_meta":{"origin":171,"position":4},"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":130,"url":"https:\/\/perezmedia.net\/beltofvenus\/2005\/07\/05\/uranus_july_5_2\/","url_meta":{"origin":171,"position":5},"title":"Uranus – July 5, 2005","author":"jperez1690","date":"July 5, 2005","format":false,"excerpt":"Uranus 20050705","rel":"","context":"In "Planetary"","block_context":{"text":"Planetary","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/planetary\/"},"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\/171","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=171"}],"version-history":[{"count":0,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/171\/revisions"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}