| Richard Harshaw | ||||
| Star:
Struve 2397
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, 9mm Lanthanum Magnification: 112x, 311x |
Position: 1847+3124
Magnitudes: 7.2 (G8 II), 9.5 Sep/PA's: 4= / 267= Year of this measurement: 1964 Distance (light years): 820 Luminosity (in suns): 78 Colors noted: yO, B Comments: Observed
at 112x (split suspected ) and confirmed at 311x. Nice color
contrast. Very rich field. Webb saw them as Y and B.
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| William Schart | ||||
| Star:
Struve 2397
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 |
Fairly tight, at first I
didn't get the split at low power. I went to mid power and was able to
split it.
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| Jim Jones | ||||
| Star:
Struve 2397
Date & Time: 07/10/01 0734 UTC Seeing: 6 <1-10 Seeing Scale (10 best)>. Location of site: Lake Oswego, Oregon Site classification: Suburban Sky darkness: 4.0 <Limiting magnitude> Sky: Full Moon + 4 days Telescope: 8 inch LX50 SCT Eyepieces: 18mm Radian, 7mm Ortho Magnification: 112x, 285x |
Est PA without inst.....270d
No observable color Very, very dim companion. A light form rising moon reaches toward the zenith, the companion is very close to LM. Clearly visible at 112x. Much better at 285 x. Dim but interesting field.
Very linear with lots of triangles and triangles within triangles.
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| Luis Argüelles | ||||
| Star:
Struve 2397
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, 200x Harschaw Scale: 3 <From 1 to 5. 1 = Great, 5 = poor interest> |
At 100x, a light split is
already perceived, but as something really difficult. I take note of the
position of the faint secondary, located really near to the main component.
In fact, this double seems more tighter than any of the doubles from Epsilon
Lyrae. At 200x, the position angle is
confirmed and makes a more easy split, although the secondary component comes and goes. Another fact that adds some
difficulty is the awkward position of observation. The refractor is pointing
in this moment towards zenith and while observing sitting on a chair, this
implies to maintain the breathing while observing, being the last thing
you need to study faint pairs.
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| Bob Hogeveen | ||||
| Star:
Struve 2397
Date & Time: 23 July, 2001, 00:00 Seeing: 8 <1-10 Seeing Scale (10 best)>. Location of site: Annen, The Netherlands - 53N, 6E Site classification: Village backyard Sky darkness: 5 <Limiting magnitude> Telescope: Celestron C-11 Eyepieces: Ultima 30mm , TV plossl 20mm, LV 15mm, 7mm Magnification: 93x, 140x Harshaw Scale: 2 <1-5; 1 best> |
STF2397 is another nice
double in a rich field. Best view was with 140x, just a bit too close for
93x.
The stars show a yellow (A) and blue (B) color. |
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| Philippe Dejocas | ||||
| Star:
Struve 2397
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: 120x
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Marks the N end of a small
almost equilateral triangle. Though w/~ 5x difference in brightness and
not even 4" of sep., but I did it nonetheless at 120x.
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| Otto Piechowski | ||||
| Star:
Struve 2397
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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