To Salt Lake Olympics site...
Doubles to celebrate the Winter Olympics 2002
Salt Lake City, USA
Struve 950


 
William Schart
Star: Struve 950
Date & Time: 2/11/02, from 9:00 to 9:45 
pm CST
Seeing: 6 <1-10 Seeing Scale (10 best)>
Location of site: Killeen, TX, USA.
Site classification: Suburban
Sky darkness: --- <Limiting magnitude>
Temperature: ~ 65F
Other: some wind, but no clouds
Telescope: Celestar 8" SCT
Magnification:

 

At 9:37, STF 950 Aa-B swung into view. A tight pair with a magnitude difference of almost 2, there was no evidence of duplicity at low power, a minimal elongation at mid, and a definate split at high power.

The Aa component presents a blue color. At about 180d from the B component, 
there is a very faint but definate star, perhaps about 15" away from Aa and maybe about mag 12 or so. STF 950 forms part of a triangular asterism, located at the 30d vertex of a 30-60-90 triangle. Since there were a lot of other stars visible in the low power FOV, I thought it looked like a cluster. Engaging the "identify" function on the DSC brought forth NGC2264, aka the Christmas Tree cluster or the Cone nebula. in this view, there was no coniferous appearance, however I pulled out my seldom used wide-field 35mm EP, and here the true nature was revealed. The tree is upside down, with our pair located at the spot where the branched first sprout out of the trunk. No evidence of nebulousity was visible.
 


 
Tim Leese
Star: Struve 950
Date & Time: 12 February 2002. 20:10 UT.
Seeing: 4-5 <1-10 Seeing Scale (10 best)>
Location of site: Northwich, Cheshire. UK.
(53° 15' N -2º 33' W).
Site classification: Suburban
Sky darkness: 3 <Limiting magnitude>
Conditions: Clear patches, high haze, light to moderate breeze.
Telescope: 200mm f/6 Newtonian reflector,  80mm f/5 rich field refractor.
Mounts: Vixen GP, EQ5
Eyepieces: 65mm Lanthanum, X2 shorty Barlow.
Magnification: X80, X160, X240
When the Olympic list was published, I realised that I should have used LADIC before submitting this contender with a DI of 94.52!! 

Surprisingly, using X160 with my 80mm f/5 refractor, the companion could be detected and appeared to be a pale orange colour. Reducing the magnification down to X80 the image was steadier but I still got the impression of the companion in the same PA.

Using the 5mm Lanthanum with my 200mm f/6 reflector(X240) told a different tale. I just could not see the companion at all in the bubbling and bobbing image. After much xxxx language and pulling out of hair, I decided that I wouldn't be defeated and sat tight on this double. Eventually, after quite a while of intense study, the 
companion began to show itself at the desired PA. In odd moments of the now steadier air I could detect the pale orange companion next to the off white primary star. I could hold a tiny bluish interloper north of the pair using direct and averted vision but splitting the Aa-B pair was very difficult indeed with this telescope. 

STF 950 lies in an extremely interesting field, being located in NGC 2264, fittingly christened, "the Christmas tree cluster". Using my reflector at a lower magnification of X48( 25mm Kellner ), I could easily see how this cluster got it's name. Through the little 80mm refractor at X44( 9mm 0rthoscopic), I thought that the cluster looked more like a stone age flint axe head. 

Ever heard of astro billiards? During the intense study of Aa-B a 
meteor flashed through the fov and appeared to kiss STF 950 gently as 
it passed by! 
 


 
Steve Bodin
Star: Struve 950
Date & Time: 14 Feb 2002, 10pm-12 local
Seeing: 4-5 <1-10 Seeing Scale (10 best)>
Location of site: Silverdale WA, USA
47ºN, 123ºW
Site classification: Suburban
Sky darkness: 5.7 <Limiting magnitude>
Telescope: Celestron 8 SC
Eyepieces: 8mm PL, 24mm Koenig, 3x barlow, PC23 videocamera
Magnification: 215x, 250x

 

Also known as 15 Monocerotis. The star is difficult to split at 250x but judged easier than theta Auriga. Both stars appear as white to blue-white in color. The video camera plus 3x teleconverter obtained the following measurements: 2.93 sec, PA 210 deg.

Ambience: The sky darkened with those disruptive high cirrus clouds spoiling the sunset. Actually most people would have thought that the sunset was beautiful! Except for an astro-nut. The Olympic committee, made up of the 3 local TV weatherguessers (they call themselves meteorologists) predicting clear skies and freezing temperatures. However, around here, any time the sky contains less than 50 % clouds, it is called 'clear' and certainly high cirrus does not count as a cloud to a population of sundodgers. At 8pm local time the trusty C8 was turned towards the heavens and was greeted by 3/10 seeing in a 5th mag limit gauze sky, could not attempt those remaining 90 plus DI's. So, retired to watch the other Olympic games for a while. By 10pm the high cirrus had passed to the east and the darkness judged to be 5.7 limit mag but seeing only a marginal 4 or 5. Since we are over due for another month of continuous rain, an attempt of Olympic proportion would be made against the remaining contestants.

 
 
 
Stuart Clough
Star: Struve 950
Date & Time: 17/02/2220 - 22:20-23:15 UT
Seeing: 4 <1-10 Seeing Scale (10 best)>
Location of site: Near Halifax
West Yorkshire, England.
Site classification: Suburban
Sky darkness: 4.0 (U Mi) <Limiting magnitude>
Temperature: 2ºC - not ideal on the slopes
Other: 2/8 - 5/8 cloud, clearing after showers. Wind - W'ly 5 - 10kts.
Telescope: Orion Optics UK GX250
10"  f4.8 Newtonian 
Mount: Vixen GP
Eyepieces:    25mmOrtho, 20 mm Plossl, 12.5mm Plossl  9mm Ortho 7mm Plossl. Ultima x2 Barlow
Magnification: x48, x60, x96, x133, x120,x160 x192 x267 x320
    
Just a 5 degree starhop from Struve 900 and I was transported into 
the wonderland of NGC 2264. I had never seen the 'Christmas Tree' 
cluster before. I will certainly return.

The field is superb and the immediate surroundings of this double 
certainly rank very highly for me. At first I just enjoyed the field 
at x48 and x60. Using the Ortho at x133 there was still no real 
indication of a split. At x 192 I though I could see an indication of 
the faint comes and was disappointed to find the image boiling at 
x267.  There were moments of better seeing though and first with 
averted and then with direct vision it was possible to be 
sure that Aa and B were split at this latter power. X320 proved 
impracticable tonight.

Thanks go to Tim for nominating this one. I really enjoyed both the 
field and the challenge.
    



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