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Some doubles from 6/17 and 6/24/2020

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#1 John Fitzgerald

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Posted 25 June 2020 - 01:46 PM

Using my 6" f/8 apo triplet again in the 8' Exploradome.  Seeing variable, at first 5 to 6/10 with glimpses of 7/10, then deteriorated some well after dark, especially on 6/24.  173x=7mm TV Delite, 203x=6mm TV Delos.

 

6/17:

STT 298 in Boo, m 7.2,8.4 sep 1.3" at PA 187. Seen at 203x.  Third star m 7.5 in high power field generally to N.

 

STT 301 Boo, m 7.5,10.4 sep 4.0" at PA 30.  A bit difficult even at 203x, probably attributable to seeing.

 

STF 2055 Oph m 4.2,5.2 sep 1.5" at PA  44.  Well seen using 173x.

 

6/24:

STF 2114 Oph m 6.7,7.6 sep 1.4" at PA 199.  173x

 

STF 2171 Oph m 8.3,8.5 sep 1.5" at PA 60.  Nice equal double well seen at 173x.

 

STF 2186 Oph m 8.2,8.4 sep 3.0" at PA 78.  Nice little equal double very well seen at 173x.

 

STF 2200 Oph m 8.5,9.2 sep 1.6" at PA 163.

 

On both nights, I tried Antares and Eta Draconis, but could not see a split on either due to seeing.


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#2 fcathell

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Posted 25 June 2020 - 02:07 PM

Interesting report.  In some ways Antares is almost as bad as Sirius due to the huge magnitude difference in the components.

 

Frank


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#3 rugby

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Posted 25 June 2020 - 03:23 PM

John:  nice selection of pairs on this run. I am working in Oph also and managed to land STF 2055 in  the same scope as yours but using the Morpheus 6.5 and Delite 3 instead. If my clear skies continue tonite I will follow your list. Oph, for me at least, lies in a morass of city lights that all seem to be pointing upward. I realize your mount is goto but if you have a finder scope which one are you using? 


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#4 John Fitzgerald

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Posted 25 June 2020 - 04:09 PM

No goto.  Using a push-to with Nexus DSC.  I have a Stellarvue 50mm RACI illuminated finder on it.  For me, Oph is in the darkest part of the sky, SSE, when I have been observing.  Oph culminates seven degrees higher here, also.


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