Otto Struve 331

 
William L. Schart
Star: Otto Struve 331
Date & Time: July 19, 2002, ,
110:30 pm to midnight., CDT
Seeing: 8 <1-10 Seeing Scale (10 best)>
Transparency: slight haze
Location of site: Killeen, TX, USA
Site classification: Suburban
Sky darkness: 3- <Limiting magnitude>
Moon: waxing gibbous moon nearby
Telescope: Celestar 8" SCT
Eyepieces: 25mm, 17mm, 10mm, 6.5mm
and CMG.
Magnification
 
Our exalted leader manager to get "33" into this list! The tightest pair on the list and the highest DI. I examined several candidates in the low power FOV without being able to determine anything. I bumped up one step in power and again examined several, 
finally settling on one which looked to be a bit elongated. With more more bump in magnification, it was definately elongated and possibly split, and was cleanly split with the super high power. There was a very faint star to the west, perhaps about 50” or 60” away.
 
 
 
 

 

 
 
Eddy O'connor
Star: Otto Struve 331
Date & Time:  Wednesday, July 31st  2002
8p.m -9. 30 p.m. local; UT +9
Seeing: 7 <1-10 Seeing Scale (10 best)>
Transparency: 9 <1-10, 10 best>
Location of site: Terara, New South Wales, Australia
Long.150º.38 ; Dec. S 34º.52. 
Site classification: Suburban
Sky darkness:  <Limiting magnitude>
Moon: No Moon.
Temp: 7ºC.
Telescope: 16" Newt. F5.1
Eyepieces: 10mm Plossl,18mm Ultima 
Celestron, 32 mm Teleview Plossl
Magnification
Harshaw Scale: 3 <1-5; 1 best>
 
This looked a challenging object on paper and in retrospect I cannot account for so easy a split. Located near Beta Ophy, this star is conveniently located near another star of similar magnitude. The trick is to try all powers on both stars until 
something gives. 
   
Comments; This star yielded at X200+ to reveal two similar-looking 
Orange stars.
 
Ambience: We have had no rain for six weeks and yet the fog and dew 
tonight belong in Dickensian England. Everything dripped as I packed 
up. An eerie glow surrounded lamps. I have had four climatic 
conditions in an hour and a half tonight. Gentle dew, warmer air and 
a small breeze and finally serious dew and then fog. All I need is a 
fog horn, a cannon on the marshes and Magwitch grabbing me by the 
throat and demanding `wittals'. And this is my best night all month! 
Anyone for Scrabble?
 


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