Struve 2767
John Ryan
Star: Struve 2767
Date & Time: 4 Sept. 2001 ( 21:45 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: 3mm Radian & 6mm Radian
Magnification: 180X & 90X
Harshaw Scale: 3 <1-5; 1 best>
At 90X noted elongation and a figure 8. At 180X had a clean split but with
the bad seeing the double was dancing all over the place. With normal seeing this double at 2.4" would be an easy split with the 101 refractor but this night it was a challenge. Both white.

 


 
Richard Harshaw 
Star: Struve 2767
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-11
Magnification: 560x
Harshaw Scale: 3 <1-5; 1 best>
HD Number 201672
SAO Number 14708
Position:  2110+1957  Rating:  3
Components:
 A:  7.5m, F5
 B:  8.5m, F5, 2 -” @ 30 - 
Year of last AB Measure:  1966
Distance (l.y.): 550, Luminosity (Suns): 30
Observed colors:  W, W 

Observations: Observed at 560x.  Not a lot to report.

Notes: First measure 2.5" @ 31.

 


 
William Schart
Star: Struve 2767
Date & Time: 9/29/01
from 8:12 to 9:15 pm CDT
Seeing: 6 <1-10 Seeing Scale (10 best)>
Transparncy:  <1-10 Seeing Scale (10 best)>
Location of site: Killeen, TX, USA
Site classification: Suburban
Sky darkness: 3.5 <Limiting magnitude>
Telescope: Celestron C8
Magnification: 80x, 160x (CMG), 200x
This appeared suspicious at low power, and at high power it was tough, but cleanly split. I was not able to detect any color and there was not much else to say about these.

Ambience: The 
weather was very comfortable, but mosquitos were quite prevalent. Neither of my pets were inclined to accompany me.

Although the moon was full, at the time I was observing, it was hidden behind my garage and trees, and thus didn't have as much of an impact as it might otherwise have. However, thought it was quite clear the seeing wasn't very good.

In addition to the 8" SCT I took my new ETX-60 out too in attempt to see how it would do. However, the presence of the moon tended to wash things out too much for it, and often, because it sits much lower than the SCT, targets I could get in the Celestron still were covered by the garage for the ETX. I did manage to look at one pair in Peg (not on our list): eta. I could only get an elongation here.
 
 

 


 
Jim Phillips
Star: Struve 2767
Date & Time: Oct. 8, 2001
Seeing: 6-7 <1-10 Seeing Scale (10 best)>
Transparency: 6 <1-10 Seeing Scale (10 best)>
Location of site: Hodges, South Carolina, USA
Site classification: Suburban
Sky darkness:  <Limiting magnitude>
Temperature: 45ºF
Telescope: Astrphysics 155 F/7 Apo
Magnification: 181x
Very nice White pair. Nice at 181X (12mm plus 2X Barlow).

Ambience: A beautiful CLEAR night. The Milky Way stood out like Billowing Star Clouds. I decided to stop observing with my telescope and just lie down looking up at Cygnus and the Milky Way. Gorgeous!
 
 
 
 
 

 


 
Dave Moore 
Star: Struve 2767
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
 
Tight. At 67x, these two blue-white stars of almost equal brightness are not cleanly split - they form a figure-of-eight. At 160x, they can be split, and I think that the brighter star has a slight yellow tinge - at this higher magnification there is a slight colour contrast between the two stars.
 
 
 
 
 
 
 
 
 
 
 

 

 
 
Tim Leese
Star: Struve 2767
Date & Time: 24 October 2001 ( 21:00UT )
Seeing: 5-6 <1-10 Seeing Scale (10 best)>
Location of site: Northwich, Cheshire. UK.
53° 15' N -2º 33' W
Site classification: Suburban
Conditions: Clear sky in patches of drifting cloud.
Moon(1st Quarter)
Sky darkness: 3.0 ( UMi ) <Limiting magnitude>
Telescope: 200mm f/6 Newtonian reflector mounted over a Vixen GP mount (manual slow motion).
Eyepieces: 10mm Plossl, 9mm orthoscopic.
Magnification: X120, X133.
 
This double was only just split at X120 but using X133 showed a clean split of two white stars. This is a nice double to observe with only a few stars in the same FOV.