Struve 1921 

Bob Hogeveen
Star: Struve 1921
Date & Time: May 07 2001
Seeing: 6 <1-10 Seeing Scale (10 best)>. 
Location of site: Annen, The Netherlands
(53ºN, 6ºE) 
Site classification: Village backyard
Sky darkness: 3.5 (UMI) <Limiting magnitude> 
Sky : Full Moon in Libra and a slight haze 
Telescope: Meade LX10 (8" f/10 SCT) 
Magnification: 50x, 100x
Harschaw's Scale: 3 <1 to 5> 
A wide and bright double, not spectacular with magnifications of 50x and 100x, but the pair will make a nice target for binoculars and small scopes.
 
 
 
 
 
 

 


 
Stuart
Star: Struve 1921
Date & Time: Monday 7th May 2001
2140 UT
Seeing: 6 <1-10 Seeing Scale (10 best)>. 
Location of site: Near Halifax, West Yorkshire, England 
Site classification: suburban
Sky darkness: 3.0 (UMi) (Full Moon)
<Limiting magnitude> 
Temperature: 3ºC 
Telescope: GX 250 10" Newtonian
Eyepiece: 20 mm Plossl 
Magnification: 60x
A wide pair of bright white stars of equal magnitude easily split in a very ordinary field. 
 
 
 
 
 
 
 
 
 
 
 

 


 
Jim Jones
Star: Struve 1921
Date and Time: 05/26/01  0708 UTC
Seeing: 7 <1 worst - 10 best> 
Location of Site: Lake Oswego, Oregon 
Site Classification: Suburban 
Sky Darkness: 4.2 <Limiting Magnitude> 
Sky: Gray sky.  2 days past New Moon (in Gemini) 
Telescope: 8 inch LX50 SCT 
Magnification: 47x, 112x 
Eye Piece(s): 42mm Ultima, 18mm Radian.
Est PA without inst.....290d

Two equal magnitude blue-white stars.  Fair field. One bright star to SW and a scattering of very dim stars to west.  Maybe a 2.5 on Richard's scale.
 

 


 
Ilario Melandri
Star: Struve 1921
Date & Time: 26 May 2001,
19.32 – 21:08 UTC
Seeing: 8 <1-10 Seeing Scale (10 best)>. 
Location of site: S.Romualdo, Ravenna, Italy. Elevation: 0 m
Site classification: rural
Temperature: +19ºC -> +16ºC
Sky darkness: 4 <Limiting magnitude> 
Telescope: 150mm f/15 achromatic refractor
(lens by Romano Zen, Venice)
Eyepieces: Clave Plossl 16 mm
Magnification: 140x
 
 

    

 
Tim Leese
Star: Struve 1921
Date and Time: 10 June 2001( 23:00UT ).
Seeing: 7 <1 worst - 10 best> 
Location of Site: Cheshire. UK.
53° 15' N -2º 33' W 
Site Classification: Suburban 
Sky Darkness: 3.0 ( UMi ) <Limiting Magnitude> 
Conditions: Clear break in the weather. 
Telescope: 200mm f/6  Newtonian
mounted over a Vixen GP mount (manual slow motion).
Any Quoted PA or SEP using Celestron micro guide (CMG).
Magnification: X67 and X322. 
Eye Piece(s): 18mm Orthoscopic, CMG.
X67( 18mm orthoscopic) split this pair of what appeared to be bluish coloured stars.

The measures for this system were taken over 3 observing sessions.
Using the CMG at X322 an average of 18 measures gave a PA of 282deg with a separation of 30.7sec.

Ambience:
After a glorious orange sunset the evening turned out to be very pleasant if turning cool later on.
The bats were very busy catching insects and I could hear the foxes rustling 
somewhere in the bushes later on. No sign of the stray cat tonight.