Struve 394


Axel Tute
Star: Struve 394
Date & Time: 26-10-05
Time:
20:05 UT
Seeing: 6 out of 10
Transparency: 6 out of 10
Location of site: Küssaberg-Dangstetten
Germany / 47°36, 8°21

Site classification: Rural
Conditions: no wind, high humidity
Sky darkness: better than 5mag
Telescope: Celestron 8
Eyepieces: 26mm Plössel
Diagonal: Yes
Magnification: 77x

26mm Plössel (77x) easily split. The "A" star seems to be blue.
See webcam photo.
 
  

Steve Bodin
Star: Struve 394
Date & Time: 7 November 2005, 11pm to midnight local
Seeing: 3/10
Transparency: good
Location of site: Mattawa WA, USA 46N 119W
Site classification: rural
Conditions: temp 34F, light wind
Sky darkness: limiting mag 6.5
Telescope: Meade 16 LX200GPS
Eyepieces: not used
Imaging: DX-8263SL color video camera at prime focus and 3x and 4x
Magnification: app. 600x, 1800x, 2400x
 
 
 
Star: Struve 394
Date & Time: 8 Nov 2005, 11pm to midnight local
Seeing: 5/10
Transparency: good
Location of site: Mattawa WA, USA 46N 119W
Site classification: rural
Conditions: 28F, some frost
Sky darkness: limiting mag 6.5
Telescope: Meade 16 LX200GPS
Eyepieces: not used
Imaging: Videocamera DX8263SL at 4x barlowx
Magnification: 2400x 

Easy split, yellow primary and blue secondary. The WDS lists the primary as a 0.2 sec double, a real nutcracker, but maybe, if I get 9/10 air, I can elongate it, will try. Measured, Aa-B 7.05 sec at 163.7 deg PA.
 

  
 
 
 
 
 
Stated before that the primary is actually a close pair, COU 260. Stacked 45 frames from 197 and got a 'figure eight' pattern, maybe just a coincidence, but was in the correct PA and very close. Measurement: 0.28 sec at 014 deg Pa, with uncertainty of 0.07 sec and 19 deg PA.
   

Florent Losse
Star: Struve 394
Date & TimeNov 05-06/06-07th, 2005
Time:

Seeing: 7 out of 10
Transparency:  out of 10
Location of site: 4433N 0012W 
Site classification: Rural
Conditions:
Sky darknesslimiting mag = maybe 2/3 at very best, <0 at worst !
Telescope:
- visual : 120mm refractor used as guidescope 
- imaging : homemade Newton 8", Barlow 3x with tube extender, Audine K400 (sampling 0"32/px) 

Eyepieces: 20mm,7.5mm 
Reductions: Reduc V3.49

Very nice double saw as blue/pale orange.
Measurement : 163°3 / 6"82
 

    

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