Struve 1839

Bob Hogeveen
Star: Struve 1839
Date & Time: May 06, 2005, 22.40 LT
Seeing:
Transparency:
Location of site: Annen, The Netherlands, 53N 6E
Site classification: Suburban
Sky darkness:
Telescope: AP Starfire 5' f/6
Mount: Losmandy G-11
Eyepieces: Pentax 40mm, Nagler 12mm, Nagler 9mm + TV powermate 2x
Magnification: 40x, 97x, 135x		 A short and easy starhop away from Kappa we find this nice pair that gets a rating 2 on the Harshaw-scale. A flattened out questionmark of stars shows the way to a triangle of which STF1839 is the top-star. 40x show the pair very good and the overall view at this low power is really beautiful, with lost of field-stars.

In this pair A seems to show an light-orange color, but it is difficult and the impression of color fades in and out.


Tim Leese
Star: Struve 1839
Date & Time: 11 May 2005, 22:00 UT
Seeing: 7-6 <1-10 Seeing Scale (10 best)>
Transparency:  <1 worst - 10 best>
Location of site: Northwich, Cheshire. UK.
(53° 15' N -2º 33' W).
Site classification: Suburban
Sky darkness:  <Limiting magnitude>
Conditions: High haze drifting by from time to time, Moon, nice view.
Telescope: 200mm f/6 Newtonian reflector
Mount: Vixen GP
Eyepieces: 30mm Ultima, 9mm Orthoscopic, 5mm Lanthanum.
Magnification: X40, X133, X240
 
9mm Or---------A fainter pair than STF1838 but well separated into two yellowish stars. Seems be located in the centre of a triangle of stars. PA estimated to be roughly on a W-E line.

30mm Ultima--------This magnification gave a pleasing view with some brighter stars scattered throughout the view. Quite a few fainter stars were seen in view too.


Alessandro Bertoglio
Star: Struve 1839
Date & Time: 26 May 2005 22.28 UTC
Seeing: IV Antoniadi
Transparency:
Location of site: Turin, Italy, 4504N 0742E
Site classification: Urban area with strong light pollution
Conditions: clear, no wind, mild temperature, little hazy
Moon: none
Sky darkness: 2.5-3 (limiting magnitude)
Telescope: Takahashi Mewlon 300, Dall-Kirkham 300/3572 reflector
Mount: 10 Micron GM2000 with FS2 controller
Eyepieces: Televue Plossl 15 mm.
Magnification: 238X
Diagonal: Yes, Televue 2" Everbrite

Easy pair composed by pretty bright stars well separated. Primary and secondary very comparable: both white with slight bluish hue, with an extimated magnitude difference about 0.1. No visible rings. Extimated PA very slightly less then 90 degrees (88?) so I'm sure this pair changed its position as my extimated PA is different from PA on the table. Not very interesting but pretty fine for small instruments.
 
 

        
 
Steve Bodin
Star: Struve 1839
Date & Time: 27 May 2005, 10pm to midnight
Seeing: 4-5/10
Transparency: fair
Location of site: Silverdale Wa, USA, 47N,123W
Site classification: Suburb
Conditions: 60F, no wind, dry
Sky darkness: limiting mag 5.6
Moon:
Telescope: Celestron C8
Eyepieces: not used
Imaging: DX8263SL video camera at prime focus, f10
Magnification: app. 333x

 Twin faint blue stars. Measured 15.93 sec at 080.8 deg PA.
 

 

 

 

 

Florent Losse
Star: Struve 1839
Date & Time: May 27-28th, 2005
Seeing: 6/10
Transparency: Good, thin clouds running
Location of site: St Pardon de Conques, France 4433N 0012W
Site classification: Rural
Conditions:
Sky darkness: m=6
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

 an easy and really nice pair in the T115/45x.
Measurements : 081°8 / 14"57
 

 

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