Struve 840

Morgan Spangle
Star: Struve 840
Date & Time:
Time:
Seeing: steady
Transparency: hazy skies
Location of site: Larchmont, NY
Site classification:  Suburban
Conditions:
Sky darkness:
Telescope: 125mm refractor, 1500mm f.l.
Eyepieces: 5, 7.5, 12.5, 18, 24, 30mm Ultima plossls

 easy in the 24mm, there was soe hint of color, but hard to pin down exactly, especially under these conditions


    

Steve Bodin
Star: Struve 840
Date & Time: 5 Feb 2006, 10pm to midnight
Time:
Seeing: 4-5/10
Transparency: poor, ring around the moon
Location of site: Mattawa Wa, USA
46.9N,119.9W
Site classification:  Rural
Conditions: 35F, no wind, dry
Sky darkness: limiting mag 4.5 due moon
Telescope: Meade 16 inch LX200GPS UHTC
Eyepieces: not used
Imaging: DX8263SL video camera at f5 with reducer and 3x barlow
Magnification: app. 300x ,900x

 Interesting double, well actually maybe a quad. Primary pair seem near equal, instead of 2.5 mags different, maybe 1 at most. WDS lists the B star as a close pair,  0.4 sec at 126 deg, will try for this on a night of good seeing. maybe one of the stars is variable? Also noted a very faint star following, might be a minor planet, will have to review this too, not listed in the WDS as a companion.   Measurement A-BC; 21.33 sec at 247.4 deg PA, the faint following star; 39.85 sec at 103.3 deg PA.
 


    

Florent Losse
Star: Struve 840
Date & Time: 2-3 and 5-6 02/2006
Seeing: 4 to 6 of 10
Transparency: good
Location of site: 4433ºN, 0012ºW, France
Site classification: Rural
Conditions: 
Sky darkness: m lim = 6
Telescope: Homemade Newton 8" at F/30
Eyepieces: Not used
Imaging device: Audine CCD (KAF400)
Imaging software: Pisco
Reduction: Reduc v3.62

No hint of elongation in the BC couple. A-BC measured 248°3  21"44

 


         

Tim Leese
Star: Struve 840
Date: 6 Feb 2006
Time: 23.00 UT
Seeing: 6-7 <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
Conditions: Crisp cold frost, bright moonlight.
Sky darkness: <Limiting magnitude>
Telescope: 200mm f/6 Newtonian reflector
Mount: Vixen GP
Eyepieces: 30mm Ultima, 9mm Orthoscopic.
Magnification: X40, X133

 9mm Ortho:  A nice split into a white primary with no colour determined for the companion, perhaps a hint of grey/blue at times though.  There was a nice triangle of stars nearby in the same fov. A quick estimate of PA ( 247 degrees ) was determined using the CMG and drift method.

   

Richard Jepeal
Star: Struve 840
Date: 7 Feb 2006
Time: 6:00pm (EST) to 10:20pm (EST)
Seeing: 6/10
Transparency:
Location of site: New Britain, Connecticut
USA
Site classification: Urban
Conditions: Periods of thin clouds
Sky darkness: 9 day old moon
Telescope: 8in Celestron Nexstar
Eyepieces: 10mm (Radian), 14mm (Pentax), 18mm (Radian),
24mm (Panoptic)
Magnification:

Soft white, creamyish primary with a non-white, purplish-gray partner.
 

    

John M. Ryan
Star: Struve 840
Date: Feb. 28, 2006
Time: 06-8:00pm to 11:00pm local time
Seeing: 7/10
Transparency:
Location of site: Barreras, Spain 41ºN, 6.6ºW
Site classification: Rural
Conditions: -8ºC, North Wind, Cold
Sky darkness:
Telescope: Celestron 9.25" SCT on Losmandy GM8
Eyepieces: not used
Imaging: Starlight Xpress MX7-16 CCD camera
Magnification:

Sep. 21.78" PA 249.02º
 


     

Tomás Vazquez Ch.
Star: Struve 840
Date: 8/03/2006-10/03/2006
Time: (TU): 21:34:25
Seeing: 4/10
Transparency:
Location of site: Sevilla, Spain.
37º 24 N. 5º 58 W
Site classification: Urban
Conditions:
Sky darkness: 3 (limiting magnitude)
Telescope: Celestron C8 D:203mm. Reducer Focal: F/6,3.
Image device: Camera CCD SX-L8 (FT12).
Eyepieces: Not used   
Magnification:
Image Software: LUCAS 1.2C
Reduction Software: LAIA 3.2A (GEA)
Telescope Computer Interface: Homemade Astro-Guider.

 Position Image: North up, East left.
Time of Integration: 15 seconds.
AR:06h06m28s Dec:+10°45'01"
AP:249.60º D:21.60" 

   
     

Axel Tute
Star: Struve 840
Date & Time: 17-03-06
Time: 19:20 UT
Seeing: 8 from 10
Transparency: 6 from 10
Location of site: Kössaberg-Dangstetten
Germany / 47º36N, 8º 21E
Site classification: Rural
Conditions: hazy skies, windy, 2.1ºC, humidity 54%
Moon: no moon
Sky darkness: Bortle 4
Telescope: Celestron 8
Diagonal: Yes
Eyepieces: 26mm Plössel
Magnification: 77x
  
Wide pair. Estimated PAÅ 225º. No color.
 

  

  
       
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