Struve 2376 

Richard Harshaw 
Star: Struve 2376 
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:  1844+3024 
Magnitudes:  8.7 (A0), 9.4 (A0), 11.2 
Sep/PA's:   AB- 22= / 64=,  AC- 82= / 207= 
Year of this measurement:  1949 
Distance (light years):  486 
Luminosity (in suns):  10 
Colors noted:  V, B?, W 

Comments:  Nice pair, but C was tough. 
Hipparchos/Tycho data show different distances for these stars; they may be an optical system.  However, the stars show similar proper motion. 
First measure:  22.3" @ 64. 
Rating:  4


 
William Schart 
Star: Struve 2376 
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
another wide pair if rather faint. Easily split at low power. Possibly blue although it is rather hard to tell from the faintness.

 


 
John M. Ryan 
Star: Struve 2376 
Date & Time: 19 July 2001 ( 21:30 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: 20mm plossl
Magnification: 134X
Harshaw Scale: 3 <1-5; 1 best>
This was the third wide one in a row easily split at 134X like the previous two. Both white.

 
Luis Argüelles
Star: Struve 2376
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: -- <From 1 to 5. 1 = Great, 5 = poor interest>
A bit more easier to split than Struve 2380, at 100x a big space is observed between the faint components of this double. The difference of magnitudes is really small and I can't observe coloration. Really near there is another star with an estimated magnitude of 11 that I can observe only with averted vision. I don't know in this moment if this star has a membership to this system.

 
Jim Jones
Star: Struve 2376 
Date & Time: 07/24/01  0620 UTC
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, 12.5mm CMG
Magnification: 112x, 160x
Primary....white
Companion......white
Fairly wide spaced double in a dim field.  Busy but dim.

Measured PA and Sep taken with Celestron Micro-Guide (CMG).  The average of 4 measurements.
Measured PA...61d
Measured Sep...22.15"

 


 
Philippe Dejocas
Star: Struve 2376
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

 

(w/2367 & a pretty optical pair): Easy at 40x; a pretty pair - a ** - in a nice field with STF 2367 (Luïs, why was it not included?), and this 8½ / 9¼ - red/blue pair about 40' SSW. I estimated STF 2376 at ~ 17" - ENE/EEN (WDS: 22.3 - 64°; 1991)

 
 
 

 

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