| Penny Fisher | ||||
| Star:
Xi Scorpius
Date & Time: 6/30/98, 21:30 ET Seeing: 6 <1-10 Seeing Scale (10 best)> Location of site: Englishtown NJ, 40.25 N 74.333 W Site classification: Suburban Sky darkness: -- <Limiting magnitude> Telescope: 8 inch Dob Magnification: 47X , 94X |
Spotted this by star hopping from Graffias. This was a
very pretty close double which was split with 47X. It appeared of
equal magnitude and similar color, a light pale yellow. With the higher
magification, component 2 appeared about a half of a magnitude dimmer,
and also it had a rather orange tinge to it.
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| Luis Argüelles | ||||
| Star:
Xi Scorpius
Date & Time: July,15,1998 - 21:30 UT Seeing: 6.5 <1-10 Seeing Scale (10 best)> Location of site: Santander - Spain Site classification: Sky darkness: 4.5 - (2.5 near horizont) <Limiting magnitude> Telescope: Vixen 102 mm f/9.8 Achromatic refractor Magnification: 25x, 50x, 100x, 200x |
Using the setting circles, I navigate from Antares towards
this very nice pair of double stars. The first observation is made at 25x
and interestingly I observe them as something more than pinpoint stars.
Anyway, I don't seem confident at all to say that I observe an elongation
at 25x.
Nevertheless, at 50x, both Xi Scorpius and Struve 1999 are an easy split with my 4" refractor. Xi Scorpius is located North from Struve 1999 and is a brighter pair, but the pair from Struve 1999 is easier to split than Xi Sco. At this magnification I can not observe difference in coloration in Struve 1999 and both components show more or less the same magnitude. On the other hand, I easily observe a nice difference in magnitude from both components of Xi Sco. What is very interesting is to note that these two double stars offer almost the same beauty as the typical "doble-doble", Epsilon Lyra. Using 100x, I observe a clear difference in magnitude in Struve 1999: The western component is a bit brighter than the another one. Also, I can't observe difference in coloration between them, and both components are rendered as white with a very slight yellowish tint. Maybe the low altitude of the star over the horizon makes it a little yellow. Again at 100x, the main component of Chi Sco appears white-light yellow, while the secondary does have a very soft blueish coloration. After removing the star diagonal, the main star of Chi Sco appears as
orangeish. The secondary is white or white-blue (??). I also confirm the
white coloration of both components of Struve 1999.
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| Pino Bandini | ||||
| Star: Xi
Scorpius
Location of site: Ravenna, Italy Date of observations (UT): 19 June 2000 – 21.39 UTC Site classification: Urban Sky conditions: Seeing: 7 (10 best) Temperature: 20C Limiting visual magnitude: -- Telescope: Celestron C8 Magnification: 81x (eyepiece 25 mm Plossl) + diagonal |
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| Mary Flanagan | ||||
| Star:
Xi Scorpius
Date & Time: 06 Jul 2000 04:46 UT; 05 Jul 11:46 PM CDT Seeing: 6 <1-10 Seeing Scale (10 best)> Transparency: 6 <1 - 10> Location of site: Apple Valley MN, USA 93d 14m 25s W; 44d 45m 17s N Site classification: Suburban Sky darkness: 4 <limiting magnitude> Telescope: 8" f/6 Dobsonian Magnification: 80x |
This one and STF 1999 are a pretty pair of doubles in
the same field, both cleanly split @ 80x, (except for the Xi B component.)
The Xi primary appeared pale blue; C looked pale orange-yellow. I must
say this was a surprise, as my NSOG shows the exact opposite, and I can
only guess that the atmospheric haze was playing havoc with my color perception.
Magnitude difference obvious.
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| William L. Schart | ||||
| Star: Xi
Scorpius
Date & Time: 7/17/00 11:51 pm CDT Seeing: 6 <1-10 Seeing Scale (10 best)> Location of site: Killeen, TX (Lat 31 N, Elev 600 ft) Site classification: Suburban Sky darkness: 3.35 <Limiting magnitude> Telescope: Orion 6" Dob. Magnification: 32x, 48x, 72x, 120x, 98x 144x, 240x |
Took a while to find this. Eventually I just resorted
to looking at every star in the general area that was bright enough to
be visible in my finder. Not split at 32x, barely at 48x. Primary was a
bright yellow, the secondary possibly a faint blue. Separation 8”, PA 50
(published 7.8, 47).
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| Eddy O'Connor | ||||
| Star: Xi
Scorpius
Date & Time: July 18th 2000, 6.45 -7.30 p.m local; UT +10 Seeing: 7 dropping to 3 <1-10 Seeing Scale (10 best)> Transparency: 9/10 Temperature: 7oC. Dew Location of Site: Terara, New South Wales, Australia, Long.150.38 degrees; South 34.52. Site Classification: Suburban Sky darkness: <Limiting magnitude> Instrument: 8" F9 Dobsonian Magnification: -- |
I expected this star to be easier to find since it
boasts a Greek letter. I was wrong. This is located in a fairly vacant area of sky with few bright pit stops. However, I eventually tracked down this light yellow star and noticed its wide mag. 7 companion but failed to unglue its bosum companion. |
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| Richard Harshaw | ||||
| Star: Xi
Scorpius
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): July 22, 2000; 0230 hours Site classification: suburban Sky conditions: seeing-- 8 out of 10 transparency-- 8 out of 10 limiting visual magnitude-- 4.5 mag Telescope: Celestron C-8 Eyepiece: 7.4mm, 280x |
Colors noted: yW, dO, bW, and W.
This system is more complex than what was listed on our Results page. The fourth star (actually "E" in the WDS) was not shown on the Results page list. To confirm the 0.8" pair, I had to go to 697x with my Barlow. It was discovered in 1782 by William Herschel.
Star A is also a spectroscopic binary.
First measures: AB = 1.1" @ 356.. AC = 6.7" @ 79 (1825). In 1903, Jouffray
got 7.3" @ 63 for AC.
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| John M. Ryan | ||||
| Star:
Xi Scorpius
Date of Observation: 3/08/00 21UT Location of Observation: Barraras, Salamanca, Spain 40º N, 6º W, Elev. 800 Meters. Seeing: 6 to 7 (1 - 10, 10 best) Transparency: 8 Limiting Mag. (naked eye): 4.5 Site classification: Rural Instrument: Televue 101 Apo Refractor Magnification: 90X (6mm Radian) |
Separation (Clear or Touching):Clear
Magnitude Comment: Bright primary and dim secondary in accordance with the data. Color comment: Pale yellowish white primary and white secondary. General Comment: Nice easy split with Struve 1999 in the same field of view. |
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