Struve 1792

Steve Bodin
Star: Struve 1792
Date & Time: 26 May 2005, 10pm to midnight
Seeing: 5-6/10, degrading to 4/10
Transparency: fair
Location of site: Silverdale Wa, USA, 47N,123W
Site classification: Suburb
Conditions: 55F, no wind, dry
Sky darkness: limiting mag 5.6
Moon:
Telescope: Celestron C8
Eyepieces: not used
Imaging: DX8263SL video camera at prime focus, and 3x
Magnification: app. 333x, 1000x

 Close faint pair of blue stars almost equal in magnitude. Measurement is
somewhat poor as the seeing started to degrade, 2.3 sec at 291.5 deg PA.
 

 

  

Alessandro Bertoglio
Star: Struve 1792
Date & Time: 24 May 2005 21.38 UTC
Seeing: III - IV Antoniadi
Transparency:
Location of site: Turin, Italy, 4504N 0742E
Site classification: Urban area with strong light pollution
Conditions: clear, no wind, mild temperature
Moon: pretty fastidious full moon
Sky darkness: 3 (limiting magnitude)
Telescope: Takahashi Mewlon 300, Dall-Kirkham 300/3572 reflector
Eyepieces: Televue Plossl 8 mm.
Magnification: 447X
Diagonal: Yes, Televue 2" Everbrite
 
Finally a hard star! Quite difficult because it's rather faint, considerably narrow and pretty unbalanced (for this city sky with this fastidious moon). Primary whitish sufficiently bright, secondary also whitish, fainter and visible only with direct vision during few moments. No rings. Extimated PA about 285 degrees. Interesting pair for good seeing and dark skies. It could be difficult for 10 to 15 cm instruments.
 

 
 
    

Florent Losse
Star: Struve 1792
Date & Time: May 26-27th, 2005
Seeing: 6/10
Transparency: Bad, heavy haze in altitude
Location of site: St Pardon de Conques
33 :) France 4433N 0012W
Site classification: Rural
Conditions:
Sky darkness: m=4 between clouds
Moon:
Telescope:
- visual : T115, guidescope suited with a 20mm eyepiece (G=45x)
- imaging : homemade Newt T200, Barlow 3x, Audine K400 (sampling 0"43/px)
Reductions: done with a future release of Reduc.
Eyepieces: 20mm
 Magnification: 45x
 catastrophic ! The clouds get thicker and thicker. Nothing to see in visual.
 
Never defeated I try two series of image varying exposure time and obtain a
splendid modern art picture but nothing to see with a double. Ok, I give up
but I'll come back !

tev
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