Struve 3048

 
Richard Harshaw 
Star: Struve 3048
Date & Time: September 5, 2001,
0230 to 0510 UT
Seeing: 6 <1-10 Seeing Scale (10 best)>
Transparncy: 6 to 7 (variable, due to high hazy clouds) <1-10 Seeing Scale (10 best)>
Location of site: Northern Kansas City,
Missouri (USA). 39º15' N, 94º30'W
980 ft above Mean Sea Level
Site classification: suburban 
Sky darkness: -- <Limiting magnitude>
Telescope: Celestron C-8, C-11
Magnification: 112x
Harshaw Scale: 3 <1-5; 1 best>
HD Number 224459
 SAO Number 91615
 ADS Number 17131
Position:  2358+2420  Rating:  3
Components:
 A:  7.9m, G5
 B:  9.6m, 9” @ 313 - 
 C:  11.3m, 41” @ 253+ 
Year of last AB Measure:  1964
Distance (l.y.): 175, Luminosity (Suns): 2.1
Observed colors:  W, B, ?, 

Observations: Observed at 112x.
Webb:  yW, B.  Grover said B was B! in 1874.

Notes: First measure:  9.2" @ 314.
The stars share a large common proper motion.
 


 
Jim Jones
Star: Struve 3048
Date & Time: 09/07/01   0530 UTC
Seeing: 5 <1-10 Seeing Scale (10 best)>
Location of site: Lake Oswego, Oregon
Site classification: Suburban
Sky darkness: 4.0 LM
Sky:  Full moon + 5 days.
Telescope: 8" LX50
Eye Pieces:  18 mm Radian
Magnification: 112x
Est PA AB without inst .....315d
Est PA AC without inst......265d
Primary....blue-white

This interesting triple system is set near the center of an isosceles triangle made up of a bright star to the WNW, another to the SE and a third to the NW. Companion C is near the LM and is intermittent.

I thought that two very, very dim wide space stars to the south might be a double.  However, I was unable to find any double in this area in the WDS.
 
 
 
 
 
 

 


 
Jim Phillips
Star: Struve 3048
Date & Time: Oct. 17, 2001
Seeing: 5-6 <1-10 Seeing Scale (10 best)>
Location of site: Hodges, South Carolina, USA
Site classification: Suburban.
Temperature: 59ºF
Sky darkness: --- <Limiting magnitude>
Telescope: AP 9" F/15 Apochromat
Magnification: 100x
Beautiful at 100X. White, purplish and very faint blue.
 
 
 
 
 
 
 
 

 


 
Mary Flanagan
Star: Struve 3048
Date & Time: 21 Oct 2001 02:30 UT; 20 Oct 9:30 CDT
Seeing: 6 <1-10 Seeing Scale (10 best)>
Transparency: 6 <1-10 Seeing Scale (10 best)>
Location of site: Apple Valley MN, USA
93º 14m 25s W; 44º 45m 17s N
Site classification: Suburban.
Sky darkness: 3 <Limiting magnitude>
Telescope: 12.5" f/5 Dobsonian
Magnification: 106x 
Primary appeared pale orange-yellow; color of secondary was indeterminate. Magnitude difference was very noticeable @ 106x. Couldn't see the third one; haze & local lights must have been the culprits.
 
 
 
 
 
 
 
 
 

 


 
Eddy O’connor
Star: Struve 3048
Date & Time: Monday, October 22nd. 2001
9-9.30 p.m local; UT +9
Seeing: 4 <1-10 Seeing Scale (10 best)>
Transparency: 4 <1-10 Seeing Scale (10 best)>
Location of site: Terara, New South Wales, Australia, 150º 38E, 34º 52S
Site classification: Suburban
Sky darkness:  <Limiting magnitude>
Moon: 5 days old.
Temperature: 17ºC -18ºC. 
Telescope: 8" Newt. F9
Eyepieces: 25mm K, 12.5 mm Ortho.
Magnification used: 73x, 146x
Harshaw Scale: --- <1-5: 1 best>
 
This group is an easy hop from Phi Peg within the Great Square. 
 
Comments: At low power the primary was Yellowish and the distant 
companion was easily spotted. Gradually as the eye became adjusted 
the closer mag.10.5 companion emerged. This closer companion seemed brighter than expected.

A noisy night with the newly arrived Keol, a migrant cuckoo-like bird from Papua New Guinea crying out for companionship. The horse, Oke, in the paddock next door kept snorting as if deriding my feeble efforts to make any sense of all those occulted doubles in the  Winged Horse . I thought of that wonderful novelist Thomas Hardy who so often had nature reflect and signal the many emotions of the human denizens in the landscape.   A lean night of doubles.
 
 

 
 
Stuart Clough
Star: Struve 3048
Date & Time: 24.10.01 2110 UT
Seeing: 6 <1-10 Seeing Scale (10 best)>
Location of site: Near Halifax
West Yorkshire, England.
Site classification: Suburban
Temperature: 8ºC
Sky darkness: 3.8 (U Mi) <Limiting magnitude>
Conditions: Variable cloud, Wind SW 8 kts
Telescope: Orion Optics UK GX250
10"  f4.8 Newtonian on Vixen GP mount.
Eyepieces: 9mm Ortho 
Magnification: x133
             
Enjoyed this triple with the best view, for me at x133, a neat triangle of stars, though the 'C' component was seen only dimly in the prevailing conditions of a sky washed out by the 1st quarter moon in Capricornus and an increasing high haze. 

I saw the colours as pale yellow, bluish white and undetermined for the 'A', 'B' and 'C' 
components respectively.