Comments on: Doubling Up http://spacejockey.freehostia.com/2009/05/doubling-up/ Exploring the Universe One Star at a Time Tue, 24 Nov 2009 10:11:43 +0000 http://wordpress.org/?v=2.7.1 hourly 1 By: Ewan http://spacejockey.freehostia.com/2009/05/doubling-up/comment-page-1/#comment-242 Ewan Fri, 29 May 2009 19:38:08 +0000 http://spacejockey.freehostia.com/?p=796#comment-242 Thanks for sharing that really useful information Aaron. As you pointed out, more magnification is probably my best bet. Conditions can be 'wobbly' at the best of times here, but I'll stick with it. Hopefully you'll see a sketch of Epsilon Boötis up here quite soon. Thanks again, Ewan Thanks for sharing that really useful information Aaron. As you pointed out, more magnification is probably my best bet. Conditions can be ‘wobbly’ at the best of times here, but I’ll stick with it. Hopefully you’ll see a sketch of Epsilon Boötis up here quite soon.

Thanks again,

Ewan

]]> By: Aaron Slack http://spacejockey.freehostia.com/2009/05/doubling-up/comment-page-1/#comment-231 Aaron Slack Sat, 23 May 2009 23:24:22 +0000 http://spacejockey.freehostia.com/?p=796#comment-231 I should also say my observation was with my 8" scope and my 7mm Speers-WALER EP with a 2x barlow. About as high a mag as I use with the 8". I should also say my observation was with my 8″ scope and my 7mm Speers-WALER EP with a 2x barlow. About as high a mag as I use with the 8″.

]]> By: Aaron Slack http://spacejockey.freehostia.com/2009/05/doubling-up/comment-page-1/#comment-230 Aaron Slack Sat, 23 May 2009 23:22:31 +0000 http://spacejockey.freehostia.com/?p=796#comment-230 I recently observed several doubles in Bootis as they are on the Astronomical League's Double Star Club list, so I checked my logbook for you. I observed Epsilon on March 21, 2009, and noted it had a separation of 2.8 arc seconds. "Tight at 350x. A is yellowish, B is considerably fainter and white." So I guess try more magnification, however it's not uncommon for me to have try on multiple nights to get those really close doubles. 2.8 arc seconds is a really small separation, it really depends on the atmosphere. Sissy Haas in her Double Stars for Small Telescopes book says she split it at 120x. Hope that helps :) Clear skies! I recently observed several doubles in Bootis as they are on the Astronomical League’s Double Star Club list, so I checked my logbook for you. I observed Epsilon on March 21, 2009, and noted it had a separation of 2.8 arc seconds. “Tight at 350x. A is yellowish, B is considerably fainter and white.” So I guess try more magnification, however it’s not uncommon for me to have try on multiple nights to get those really close doubles. 2.8 arc seconds is a really small separation, it really depends on the atmosphere. Sissy Haas in her Double Stars for Small Telescopes book says she split it at 120x. Hope that helps :) Clear skies!

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