| Bill Reinehr | ||||
| Star:
Struve 2390
Date & Time: July 6, 2001, 04:40 UTC Seeing: 8 <1-10 Seeing Scale (10 best)>. Transparency: /10 Location of site: Pflugerville, Texas, USA (30 degrees N.) Site classification: Suburban Sky darkness: 3.9 <Limiting magnitude> Sky: full moon but clear & very still Temperature: 78º F. Telescope: Vixen 80mm Fluorite, f/8 on Custom D altaz mount Eyepieces: 30mm Ultrascopic & 7mm Pentax Magnification: 21x & 91x |
A clean split at 91x. No
color noted.
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| Richard Harshaw | ||||
| Star:
Struve 2390
Date & Time: 6 July, 2001, 03:00 to 04:55, UT Seeing: 8 <1-10 Seeing Scale (10 best)>. Transparency: 6-7/10 ,variable, due to high hazy clouds Location of site: Northern Kansas City, Missouri. 39º 15' N, 94º 30' W, 980 ft above Mean Sea Level Site classification: Suburban Sky darkness: <Limiting magnitude> Telescope: Celestron C-11 Eyepieces: 25mm Plossl Magnification: 112x |
Position: 1846+3431
Magnitudes: 6.8 (A5), 8.6 Sep/PA's: 4= / 158= Year of this measurement: 1965 Distance (light years): 770 Luminosity (in suns): 107 Colors noted: oY, pB Comments: Fair view,
with a nice field just to the west.
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| Bob Hogeveen | ||||
| Star:
Struve 2390
Date & Time: July 8, 2001; 0:30 - 01.15 Seeing: 6 <1-10 Seeing Scale (10 best)>. Location of site: Annen, The Netherlands (53 N, 6 E) Site classification: Village-backyard Sky darkness: 4 <Limiting magnitude> Telescope: Meade SCT 8" f/10 Eyepieces: Ultima 30 mm, TV plossl 20mm, LV 15mm, LV 7mm Magnification: 67x, 100x |
Comments: A very nice view
with 67x, the pair is tiny then but shows nicely in an attractive field.
100x give the best view of the pair itself. No colors noted.
Rating: 2
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| William Schart | ||||
| Star:
Struve 2390
Date & Time: July/9/01 0500 to 0635 UT Seeing: 7 <1-10 Seeing Scale (10 best)>. Location of site: Killeen, TX, USA Site classification: Suburban Sky darkness: 4 <Limiting magnitude> Temperature: In the 80's F (30's C). Slight breeze. Telescope: Celestar 8" SCT Eyepieces: 25mm, 17mm, 10mm Magnification: 80x, 120x, 200x |
Moderately tight, I ot a
probable split the first time I looked at it at low power. I confirmed
thyis by going to mid power and then back to low power and was able to
make a definate split this time. the primary I see as blue and I got a
tinge of yellow of the fainter one.
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| John M. Ryan | ||||
| Star:
Struve 2390
Date & Time: 19 July 2001 ( 22:00 UT ). Seeing: 6+ <1-10 Seeing Scale (10 best)>. Location of site: Barreras, Salamanca, Spain. Site classification: Rural,Suburban. Conditions: no moon, fairly dry but with gusts of wind. Sky darkness: 5+, some light due to street lights in the village. <Limiting magnitude> Telescope: Meade 7" Mak Cas mounted on a Losmandy GM8. Eyepieces: 12mm plossl Magnification: 223X Harshaw Scale: 3 <1-5; 1 best> |
Nice split at 223X. Mag
difference also here seems greater than listed. Both white.
Ambience: Last week the weather
here in Spain was on the cool and cloudy side. There was a large low pressure
system centered over England and the wind from the north was on the chilly
side. Last week it was very cloudy almost all week but both Tues. and Thurs.
nights cleared up sufficiently to get the telescope set up. I spent the
first half of each night working with the Microguide for the Project of
Richard Harshaw. Afterwards I was able to get five doubles in Lyra each
night. The nights were quiet but the seeing was a lot worse than the week
before with continuing gusts of wind. The village was a lot more animated
due to the arrival of families of vacacioners that have homes or relatives
in the village. There is only one little boy who lives permanently in the
village but in the summer that goes up to about ten and everyone stays
out late until One or Two AM laughing, singing and storying telling. While
I was looking for doubles you could feel the gayety in the village.I noted
that all nine doubles in this report were discovered by the elder Señor
Struve. What would we have done in the Spirit of 33 without the Sturve
team of father and son.
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| Luis Argüelles | ||||
| Star:
Struve 2390
Date & Time: 21st, July, 2001. 21:00 – 23:05UT Seeing: 7-8 <1-10 Seeing Scale (10 best)> Transparency: 3-4 <0:worst -10:best > Location of site: Quintueles, Gijón, Spain. 43º 32N, 5º 55W. Altitude: 20 m. Site classification: Suburban Sky darkness: 3.0 - 3.5 <Limiting magnitude> Temperature: about 15º C Conditions: A lot of haze and moisture. Seeing is rather good, but haze actuates like a light diffusor and that makes difficult observe stars fainter that 10 magnitude. Humidity: about 90% Telescope: Vixen 102 4" achromatic refractor Eyepieces: 35, 10 and 5mm Baader-Planetarium Eudiascopics Magnification: 100x Harschaw Scale: 3 <From 1 to 5. 1 = Great, 5 = poor interest> |
A bit more difficult to split than Struve 2481 A-Bc, it appears rather tough at 100x but splittable without problems. In this moment of observation, the "Ambience" varies due to a car crosses the small road at one side of the village (traffic is about 2 or 3 vehicles/day). I close my eyes and after, I seize the opportunity for applying another "hot cloth" to the Vixen tube for about 1 minute for preventing dew. The position for observing is so unconfortable that I must to relocate the mirror diagonal and to observe laterally. The neck starts to ache a bit! | |||
| Stuart Clough | ||||
| Star:
Struve 2390
Date & Time: 27.07.01. 2220 UT Seeing: 7 <1-10 Seeing Scale (10 best)>. Location of site: Near Halifax West Yorkshire, England. Site classification: Suburban Sky darkness: 4.4 (U Mi) <Limiting magnitude> Temperature: 22 C Conditions: No cloud, Lt. Airs, balmy. Telescope: Orion Optics UK GX250 10" f4.8 Newtonian on Vixen GP mount. Eyepieces: 20 mm Plossl, 25 mm Ortho, 9mm Ortho, Ultima Barlow. Magnification: x60, x96, x133 |
A fairly obvious split at x60, much better view at x96 and best at x133. An easy pair, nothing remarkable about this object. Primary white, comes showed a greyish cast. | |||
| Jim Jones | ||||
| Star:
Struve 2390
Date & Time: 07/24/01 0610UTC Seeing: 6 <1-10 Seeing Scale (10 best)>. Location of site: Lake Oswego, Oregon Site classification: Suburban Sky darkness: 4.5 <Limiting magnitude> Sky: New moon + 2 days Telescope: 8 inch LX50 SCT Eyepieces: 18mm Radian Magnification: 112x |
Est PA without inst ....160d
No observable color Makes a long narrow equilateral triangle with two stars to west (mag 8-9). A broader equilateral triangle to the NW. Fairly busy field. Probably 20-25 stars visible in 35' FOV.
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| Philippe Dejocas | ||||
| Star:
Struve 2390
Date & Time: July 28 2001 Seeing: 6.5 <1-10 Seeing Scale (10 best)> Location of site: Canada Site classification: Suburban Conditions: Clean skies and warm temperatures. Sky darkness: 4.5 <Limiting magnitude> Telescope: 6inch/f5 newt Magnification: 40x, 85x
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At 40x I have a fine field
but no double, though the golf club stands out nicely. 85x resolved it
well. A **½.
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| Otto Piechowski | ||||
| Star:
Struve 2390
Date & Time: 9 PM EDT Saturday, August 18 to 2 AM, Sunday, August 19 Seeing: 8 <1-10 Seeing Scale (10 best)>. Location of site: Lexington, KY, USA Site classification: Urban area Sky darkness: 4.5 (Zenith Unaided) <Limiting magnitude> Conditions: Clear, a bit of haze, still, c. 65 degrees F, very slight breeze Telescope: 150 mm Maksutov Cassegrain (Intes standard MK 67) Eyepieces: 30 mm ?, 16 mm Rini, 11.4 mm Rini, 7 mm and 4 mm celestron orthos, 5 mm University Optics ortho. Magnification: 113x |
Resolved at 113X (16 mm)
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