| Tom Teague | ||||
| Star:
Struve 3050
Date & Time: 2000 October 19 (2025 UT) Seeing: 7 <1-10 Seeing Scale (10 best)>. Location of site: Chester, England (53 11 08N; 02 51 39W) Site classification: Suburban Sky darkness: 4.5 <Limiting magnitude> Telescope: 63mm Zeiss Telementor refractor Magnification: x140, x210 |
Both stars white. To my eye, the s component is clearly fainter.
I cleanly separated the pair x140, with a definite dark thread between
the two stars. Got a superb view x210 - two perfect round discs,
not quite in contact but separated by a distinct thread of darkness.
This pair would make a fine test object for a 6cm OG, although it is not
really very difficult for the Telementor. PA estimated at 300.
|
|||
| Thad Robosson | ||||
| Star:
Struve 3050
Date & Time: 21, October, 2000 Seeing: 7-8 <1-10 Seeing Scale (10 best)>. Location of site: Phoenix, USA Site classification: Decidedly Urban Sky darkness: 4 <Limiting magnitude> Temperature: about 70ºF Telescope: 90mm ETX MakCas Magnification: 85x |
Not too hard to find, but one heck of a star hop. It is one of
the brighter stars in this field. 39x I suspect elong, but
not "8" Color appears white/grey. 83x definately split w/ dark between.
Est PA about 315°. 125x, Even more defined double, but no color
noted. A very equal pair.
|
|||
| Richard Harshaw | ||||
| Star: Struve 3050 (ADS 17149)
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): Nov 2, 2000 at 2330 Site classification: suburban Sky conditions: seeing-- 8 out of 10 (at times, approaching 9) transparency-- 7 out of 10 (high, thin and spotty clouds, taking perhaps 1magnitude from the starlight) limiting visual magnitude-- 4.0 mag Telescope: Celestron C-8 Eyepiece: 7.4mm, 280x |
Year of first measurement: AB 1830, 4.0 / 189 (quadrant
reversal???); AC 1909, 82 / 289
Year of last measurement: 1999 Distance (light years): n/a Luminosity (in suns): n/a Eyepiece and magnification: 7.4mm, 280 x Colors noted: W, W and W??. Webb: yW, ?. C was extremely difficult. The orbital period is 355 years (Heintz, 1974). Very nice pair, earning a "1". |
|||
| Tim Leese | ||||
| Star:
Struve 3050 (ADS 17149)
Date & Time: 2nd December 2000 (21:30 UT) Seeing: 6 <1-10 Seeing Scale (10 best)> Location of site: Cheshire. UK 53° 15' N –2º 33' W Site classification: Suburban Sky darkness: 3 <Limiting magnitude> Telescope: 200mm f/6 Newtonian scope mounted over a Vixen GP mount (manual slow motion). Magnification: X60, X120, X240
|
At X60 magnification some elongation and maybe a peanut
shaped white star was observed.
Separation of the two white stars, in moments of steady seeing, was achieved using a magnification of X120. The best view came from using X240 magnification giving a classic view of two close equal magnitude white stars. The PA was estimated using X240 and found to be 310deg.
|
|||
| William L. Schart | ||||
| Star: Struve 3050 (ADS 17149)
Date & Time: 11/27/00 Time: 7:30 pm CST Seeing: 7 <1-10 Seeing Scale (10 best)> Location of site: Killeen, TX (Lat 31 N, Elev 600 ft) Site classification: Suburban Sky darkness: 4 <Limiting magnitude> Instrument: Orion 6” Dob Magnification: 32x, 120x, 144x, 240x |
The vertex of a flat triangular asterism located on the
other side of alpha from Struve 24. This was one of our Olympic stars,
but I revisited it to make this a “legal” observation for the Andromeda
project. (Is that like The Andromeda Strain ?)
Unable to split except at higher powers - suspected at 120, but not confirmed until I broke out the “big gun” (barlow), and even then not a real clean split. Color Y (nice golden yellow). No attempt was made to measure or even estimate for this pair. Monday was a beautiful day - sunny and warm, with a high of 72° F (22° C) and still quite balmy when I went out to observe. My first stop was Struve 3050, reported below. Then I tried for 26 and Struve 514, without success. I sort of think that I found them, but since I couldn’t split them, I cannot be sure. The separations listed in out table I should have been able to split, possibly the maag 9 and 10 companions were too faint for the prevailiing conditions. Or I amy have been looking at the wrong stars. I think that it is time to prepare more detailed finder charts to track down other pairs that I either have not had any success using Norton’s or do not appear in that reference. However, while I was searching, I did observe a meteor flash through the FOV. Serrendipity! |
|||
| Bob Hogeveen | ||||
| Star:
Struve 3050 (ADS 17149)
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 wonderful double, both stars yellow and very close to each other!
With 100x they are separated but very, very close. At 285x they are cleanly split but the star-images are fuzzy. Rating : 2 Just for the fun of it I tried STF3056, a very close one which is situated near STF3050. No more than some elongation could be noted at 285x, but the elongation was true, I checked the orientation afterwards (always afterwards!) Rating : 5 For my observing companion (see navidad-picture) it was a strange evening. Tonight I couldn't let her out because of the firecrackers going off now and then. She hates that sound and starts barking very loud every time a firecracker goes off. Normally she lies down somewhere near where I am observing and every time I go inside to have a look at the PC for the next object she follows me in, and out again. This time I didn't let her out and she lay down in front of the gardendoor wondering why she wasn't allowed to come out with me. I had a nice time with my "old" LX10. I didn't get the CG-11 out because
I didn't expect much of it. But the cloudgods were nice to me and I had
almost uninterrupted observation for about 2.5 hours. I ended the session
with Theta Ori at the time when the sky was almost totally overcast with
clouds coming in from the north. Before I could have a good look the stars
and the nebula also disappeared in the clouds.
|
|||