Struve 3

 
John M. Ryan
Star:  Struve 3
Date & Time: 25:10:03 21:15 local time
Seeing: 8 <1-10 Seeing Scale (10 best)>. 
Transparency:  Good
Location of site: Barreras, Salamanca, Spain
Site classification: Rural
Conditions: Temp. 10ºC, calm
Sky darkness: 8 <Limiting magnitude> 
Telescope: Celestron 9.25" SCT
Eyepieces: none
Additional: Stella Cam Ex video camera, prime focus
Magnification
The video camera is black and white so no color can be noted. This double consists of two components about a dirrerence of three in magnitude and a wide split noted on laptop screen. Theta = 332.7º and rho = 49.43"

 


 
Eddy O'connor
Star:  Struve 3
Date & Time: December 15th 2003
10.00-11.00 p.m local; UT +10
Seeing: 9 <1-10 Seeing Scale (10 best)>
Transparency:  7 <1-10  Scale (10 best)>
Location of site: Terara, New South Wales,
Australia, Long.150.38 ; Dec - 34.52. 
Site classification: Suburban
Conditions: Temp 20°C. No Moon. 
Sky darkness:  <Limiting magnitude> 
Telescope: 8" F9 Newtonian
Eyepieces: 16mm and 12mm  10mm Ortho.
Magnification: 114x, 152x, 182x
Harshaw Scale: 2 <1-5, 1 best>
     
Mag. 5.2/7.8; Sep. 49.1". This beautiful object forms a shallow triangle with Eta and Theta Ceti in the finderscope. The Moon filter  suggestsLight Blue and Deep Blue in the wide double but all is revealed with the filter removed. The primary is a brilliant White and the secondary suggests Violet. Two other dimmer stars are in the field at moderate power. 

Ambience: The intensity of full summer is upon us.  Humans and plants from cooler climes wilt in the mid-day heat, birds cavort in puddles of water and a plague of skinks is underfoot, their tails disappearing snake-like under cover as they scrabble away from menacing feet. The night sky is rarely clear and the day's heat haze is replaced by occulted stars most nights. On special nights the air is cleansed by southern  cool fronts rushing up the coast and leaving a brief window of clarity behind.  Such was the case for two nights this week when a small High Pressure belt sat just off the coast and magical skies briefly appeared.Full darkness is still not here by 9 p.m. and the dipping Cetus rapidly heads to the northwest horizon. My first three doubles convinced me that finally my eyes or my telescope had packed it in. Inspiration, late in coming, finally revealed  that my Moon Filter was still in my 16mm eyepiece! Periscope Up! 
 
  
 
 


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