| Richard Harshaw | ||||
| Star: HN
84 Sagitta
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): UT: 02:15 of Sept. 16, 2000 Site classification: suburban Sky conditions: seeing-- 4/10 up to 8/10, in short spans of time transparency-- 8 out of 10 limiting visual magnitude-- 5.0 mag Telescope: Celestron C-8 Eyepiece: 20mm (104x) |
Position: 1939+1634
Magnitudes: 6.4, 9.4 Sep/PA's: 28 / 301 Year of last measurement: 1931 Distance (light years): 2,300? Luminosity (in suns): 1,270 Eyepiece and magnification: 20mm (104x) Colors noted: dRO!!, B. A very rich field lies about 8' south. The pair might be optical. Star A is a spectroscopic binary and an infra-red source. I rated this pair 3. Interesting choice of stars, Mr. Ryan. The color of the primary was very intense. (Its spectrum suggests an M0 supergiant.) |
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| Eddy O'Connor | ||||
| Star: HN
84 Sagitta
Date & Time: 9 p.m local; UT +11. Saturday, September 16th 2000. Seeing: 6/10 <1-10 Seeing Scale (10 best)> Transparency: 6/10 Location of Site: Terara, New South Wales, Australia, Long.150.38 degrees; South 34.52. Site Classification: Suburban Sky darkness: 4.5 <Limiting magnitude> Instrument: 8" F9 Dobsonian Magnification: 72X (25mm K) |
This delightful golden and blue double lies just East
of the arrow Sagitta, North of the dominant Altair in this part of sky.
The wide separation of 28.5" makes this a small telescope special. Its
rich mag 6.5 burnt gold primary contrasting with its fainter mag. 8.9 Bluish
companion.
Comments: To add to the pleasure of this colourful duo, my notes remind me that two other wide doubles are found in this field at low power, making this unobstrusive area of sky a gold medal inclusion in the Olympic List.
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| Tom Teague | ||||
| Star:
HN 84 Sagitta
Date & Time: 2000 September 18 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 <Limiting magnitude> Telescope: 63mm Zeiss Telementor refractor Magnification: x53 |
Another grand pair - well chosen, John! This star was new to
me. The primary is a striking deep orange hue. In my small telescope,
the comes is too faint for me to be able to see colour properly, but I
suspected a hint of blue/green (no doubt a contrast effect). I estimated
the PA at 300 degrees, which I think is pretty accurate. A remarkable
attractive double in an interesting region of the sky - an even wider pair,
Epsilon Sge, precedes it quite closely in the same field.
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| Ilario Melandri | ||||
| Star:
HN 84 Sagitta
Date & Time: 22/09/2000 – 19.10 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: +15C Telescope: 150 mm f/15 achromatic refractor (lens by Romano Zen, Venice). Magnification: 140x (Plossl 16mm) |
The sep. of 28.2” at a distance of 2297 light years, gives the
incredible distance of about 20,000 Astronomical Units, about 0.3 Light Years. |
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| Jim Jones | ||||
| Star:
HN 84 Sagitta
Date & Time: 0530 UTC Sept 22, 2000 Seeing: 6 <1-10 Seeing Scale (10 best)> Location of site: Lake Oswego, Oregon, USA Site classification: Suburban Sky darkness: 5 <Limiting magnitude> Telescope: 8 inch LX50 SCT Eye Piece(s): 42 mm Ultima Magnification: 47x |
Very pretty double set in interesting rich field of stars.
The wind was strong enough to blow the scope around a bit.
Primary....yellow-orange
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| Patrick J. Anway | ||||
| Star: HN
84 Sagitta
Date & Time: Sept. 24, 2000, 11pm EDT (03:00 UT) Seeing: 6 <1-10 Seeing Scale (10 best)> Location of Site: Munising Michigan USA Site Classification: Rural Sky darkness: 6 <limiting magnitude> Sky condition: a few high clouds, no moon Temperature: 34deg F (2deg C) Telescope: Vixen 102mm f/9.8 Eyepieces: 6mm, 9mm, 18mm orthos
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Using the 9mm for 111X this pair split into stars of contrasting
color. The primary was a pinkish-yellow and the secondary a gray-blue.
This also in the "High-Precision Subset" group (see note for Theta Sagittae)
and interestingly, the Hipparcos data revealed it to be a newly discovered
variable of spectral type: M0Iab-Ib SB.
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| William L. Schart | ||||
| Star:
HN 84 Sagitta
Date & Time: 9/26/00 8:25 pm CDT 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> Telescope: Orion 6" Dob. Magnification: 32x, 98x |
Tonight's target, HN84 in Sagittae, necessitated standing on my head
in order to be able to see through the finder. The cat was mad at me, this
morning I was up in the computer room and she apparently snuck without
me knowing, and I shut the door before leaving for school. It was nice
and cool out. No pond mists, fragrant flowers, or much else in the way
of ambience tonight. Also, no migrating stars. I checked.
Located near alpha Sag, in fact this was visible in the same low power FOV. Easily split at this power, the primary was quite orange. At low power I did not detect any color in the fainter companion, however at higher power it appeared blue. PA measured at 28", sep at 305. There was a third pair also located in the same low power FOV, with MNB84 forming the vertex of a somewhat flat triangle. |
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