Struve 2841
John Ryan
Star: Struve 2841
Date & Time: 4 Sept. 2001 ( 21:30 UT)
Seeing: 4+ <1-10 Seeing Scale (10 best)>
Location of site: Barreras, Salamanca, Spain.
Site classification: Rural, Suburban.
Conditions: almost full moon, fairly dry but with gusts of wind.
Sky darkness: 3+ <Limiting magnitude> due to moon.
Telescope: TeleVue 101 on a Alt Az Gibraltar mount
Eyepieces: 6mm Radian
Magnification: 90X
Harshaw Scale: 2 <1-5; 1 best>
Wide double and the mag difference of 2+ was very obvious. Easy split.
In spite of the poor seeing there was some color contrast of a whitish yellow primary with a tint of blue on the secondary. Second best double of the night. 
 

 


 
Richard Harshaw 
Star: Struve 2841
Date & Time: September 5, 2001,
0230 to 0510 UT
Seeing: 6 <1-10 Seeing Scale (10 best)>
Transparncy: 6 to 7 (variable, due to high hazy clouds) <1-10 Seeing Scale (10 best)>
Location of site: Northern Kansas City,
Missouri (USA). 39º15' N, 94º30'W
980 ft above Mean Sea Level
Site classification: suburban 
Sky darkness: -- <Limiting magnitude>
Telescope: Celestron C-8, C-11
Magnification: 83x, 112x
Harshaw Scale: 2 <1-5; 1 best>
HD Number 208202
ADS 15431
Position:  2154+1943  Rating:  2
Components:
 A:  6.4m, K0 III
 B:  8.8m, G5, 22” @ 110 - 
Year of last AB Measure:  1958
Distance (l.y.): 364, Luminosity (Suns): 32
Observed colors:  yO!, B! 

Observations: C8: Observed at 83x.  Four or five 9.5m stars lie to the S and a few more to the N.  Rich field. 
C11: Observed at 112x.  Wow, a very birhgt field!  A yW star (SAO 107474) lies about 12min W.  The colors are very, very nice on this pair!
Webb saw them as Y! and B.

Notes: Hipparchos/Tycho data show different distances for these stars; they may be an optical system.  However, the stars show similar proper motion.
First measure 22.2" @ 111.

 


 
Stuart Clough
Star: Struve 2841
Date & Time: 8th September 2001. 2045UT
Seeing: 3-4 <1-10 Seeing Scale (10 best)>
Location of site: Near Halifax West Yorkshire, England.
Site classification: Suburban
Conditions: Clear sky, fresh NNW'ly breeze
Temperature: 8C 
Sky darkness: 4.8 <Limiting magnitude>
Telescope: Orion Optics UK GX250 10"  f4.8 Newtonian on Vixen GP mount.
Eyepieces: 20mm Plossl, 9mm Ortho, 7.5mm Plossl.
Magnification: x60, x133, x160
A wide double easily split at all powers. The primary is very pale yellow and the comes blue. The rich and interesting field contains another double of similar separation. It was necessary to check the published PA to be sure of the target.
 
 
 

 


 
Mary Flanagan
Star: Struve 2841
Date & Time: 26 Sep 2001 02:56  UTC;
Seeing: 5 <1-10 Seeing Scale (10 best)>
Transparency: 5
Location of site: Apple Valley MN, USA
93d 14m 25s W; 44d 45m 17s N
Site classification: Suburban 
Sky darkness: 3 <Limiting magnitude>
Telescope: 12.5" f/5 Dobsonian 
Magnification: 106x
Easy at 106x. The primary was a pale orange; secondary yellowish white.
 
 
 
 
 

 


 
Jim Phillips
Star: Struve 2841
Date & Time: Sept. 29, 2001
Seeing: 6-7 <1-10 Seeing Scale (10 best)>
Location of site: Hodges, South Carolina, USA
Site classification: Suburban.
Temperature: 54ºF
Sky darkness: --- <Limiting magnitude>
Telescope: AP 155 F/7 Apochromat
Magnification: 90x
Yellowish, Faint Blue. Very nice pair. Reminiscent of Alberio! 12mm Nagler.

 
William Schart
Star: Struve 2841
Date & Time: 13 Oct 2001
9:20 - 10:45 pm CDT
Seeing: so-so
Location of site: Killeen, TX 
Site classification: Suburban 
Sky darkness: 4 <Limiting magnitude>
Telescope: 8" SCT 
Magnification: 80x, 200x, 165x (CMG)
Another triple, but I was not able to split the B/C pair at any power. The A-B/C split was easy. At first the A appeared almost turquoise to me and the B/C combo blue, but later the A seemed more yellow. PA 22.9, Sep 106.9 (ave 5 meas.)
 
 

 


 
Eddy O’connor
Star: Struve 2841
Date & Time: October 14th  2001
8-9.30 p.m local; UT +9
Seeing: 7 <1-10 Seeing Scale (10 best)>
Transparency: 8 <1-10 Seeing Scale (10 best)>
Location of site: Terara, New South Wales, Australia
34º52S, 150º.38E
Site classification: Suburban - Rural
Temperature: 18ºC
Sky darkness: 5 - 5.5, No Moon <Limiting magnitude>
Telescope: 8" Newt. F9
Eyepieces: 25mm K, 12.5 mm Ortho
Magnification: 73x, 146x
Harshaw Scale: 2 <1-5, (1 best)>
 
This interesting double is found near the upper forelock and close to 3 Peg. It lies at the base of a cruciate-shaped group.

Comments: This is a delicate White and Bluish pair in a rich field. Another star, equal in brightness to the primary sits in the field top the west.
 

 
 
 
 
 
 

 

 
 
Dave Moore 
Star: Struve 2841
Date & Time: 21st October 2001
19.55-22.00 BST 
Seeing: 3 <1-10 Seeing Scale (10 best)>
Transparency: 7 <1-10 Seeing Scale (10 best)>
Location of site: Charminster, Bournemouth, Dorset
51ºN, 1ºW
Site classification: Suburban
Sky darkness: 4.3 <Limiting magnitude>
Moon: 4 Days Old, but below horizon
Bootle Scale: 8 (Suburban/Urban)
Telescope: 8" Meade LX-90 SCT f/10 (Lucy)
Eyepieces: 30mm Celestron Ultima (67x), 
26mm Meade Super Plossl (77x), 
12.5mm Celestron Ultima (160x), 
2x Barlow
Magnification used: 67x, 160x
             
Another wide double, split well at 67x. At this magnification the two stars, which are of uneven brightness appear to be yellow-white and cyan. However, when I increased the magnification to 160x, I saw the colours as yellow and green-orange.