| Richard Harshaw | ||||
| Star: Struve
3 (HD 556; SAO 36118; ADS 119)
Location of site: Northern Kansas City, Missouri (USA) 94d 30m west longitude, 39d 15m north latitude 980 ft above Mean Sea Level Date of observations (UT): 03:30, Oct 17, 2000 Site classification: suburban Sky conditions: seeing-- 8 out of 10 transparency-- 7 out of 10 limiting visual magnitude-- 4.5 mag Telescope: Celestron C-8 Eyepiece: 20mm Erfle (104x) |
Sep/PA's: 5 = / 82 -
Year of last measurement: 1999 Distance (light years): 452 Luminosity (in suns): 14 Eyepiece and magnification: 20mm Erfle (104x) Colors noted: W and O. Webb calls this "an elegant pair," and I tend to agree with him. (I'd
rate it at 2 out of 5.)
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| Tom Teague | ||||
| Star:
Struve 3
Date & Time: 2000 October 18 (20:35 UT) Seeing: 6 <1-10 Seeing Scale (10 best)>. Location of site: Chester, England (53 11 08N; 02 51 39W) Site classification: Suburban Sky darkness: 4 (some high cloud present) <Limiting magnitude> Telescope: 63mm Zeiss Telementor refractor Magnification: x93, x140, x210 |
Surprisingly difficult, although it's possible that the thin high cloud
was interfering with this observation. I managed only a few glimpses
of the comes x140 with averted vision. Not seen at lower powers.
Indistinctly seen x210 (would probably appear well at this power in better
seeing conditions). No colours. Not a very rewarding pair.
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| Ilario Melandri | ||||
| Star:
Struve 3
Date & Time: 1 nov 2000 , 20.18 UT Seeing: 6 <1-10 Seeing Scale (10 best)> Location of site: Italy, Ravenna, San Romualdo, Lat 44 32’N Lon 12 08’E Elevation: 0 m Site classification: Rural Sky darkness: 4.5 <Limiting magnitude> Temperature: +9C Telescope: 150 mm f/15 achromatic refractor (lens by Romano Zen, Venice). Magnification: 140x (Plossl 16mm) |
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| Rafael Benavides | ||||
| Star:
Struve 3
Date & Time: 15, November, 2000 (21 h 30 m UT) Seeing: 6 <1-10 Seeing Scale (10 best)> Location of site: Posadas (Córdoba), Spain 37º 48' N - 5º 08' 30" W 100 mts over sea level Site classification: Suburban Sky darkness: 5.5 <Limiting magnitude> Temperature: 10ºC Telescope: Helios 120 mm f/8.3 achromatic refractor Eye Piece(s): Plossl 20 mm, Plossl 10 mm, Microguide 12.5 mm, 2x Barlow, diagonal prism |
At lower power I saw a bright star of 7th magnitude placed
6' West. I used Plossl 20 mm (at 50x) to reveal a close double star. I
got a best view at 100x. The primary star appeared to be a pale cream colour
with the secondary orange. Why? Really, both must be white. Using MicroGuide
and Barlow 2x at 263x from an average of 6 measurements I found the secondary
to be at PA of 82º4 with separation of 5"3.
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| Susan Delaney | ||||
| Star:
Struve 3
Date & Time: 2000-12-27/28 19:00 - 22:00 EST (00:00 - 03:00 UT) Seeing: 6 <1-10 Seeing Scale (10 best)>. Transparency: 8/10 Temperature: 26F Location of site: Fairfield, CT, USA Site classification: Suburban Sky darkness: ~ 4.7 <Limiting magnitude> Telescope: Discovery 10" DHQ f/5.6 Dobsonian Eyepieces and Magnification: 9mm Nagler (158x)
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At 158x, the secondary star was fainter than the primary and no color
was noted. Both stars appeared white to my eye. Ambience: Brisk, cold weather with occasional strong wind gusts would periodically shake the tube!. I split several more doubles on the Andromeda list since January marks the end of that project and I many left to do.
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| Bob Hogeveen | ||||
| Star:
Struve 3
Date & Time: December 30, 2000 21.00->23.30 UTC+1 Seeing: -- <1-10 Seeing Scale (10 best)>. Location of site: Annen, The Netherlands (53 N, 6 E) Site classification: Village-backyard Sky darkness: 4.5 <Limiting magnitude> Conditions: Now and then some clouds Temperature: -2ºC Telescope: Meade LX10 (8" SCT) Eyepieces: TV 40mm, Meade 25mm, TV 20mm, Vixen LV 7mm |
A very beautiful pair with 100x. There is some color difference, B
is more yellow than A. I couldn't tell if A was white and B was yellow
or A was also a bit yellow and B was a bit more yellow.
Rating : 2 (almost 1)
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