Struve 1474 + 1474b

 
Tim Leese
Star: Struve 1474 + 1474b
Date & Time: 1st March 2002 ( 21:30 UT )
Seeing: 7 <1-10 Seeing Scale (10 best)>
Location of site: Northwich, Cheshire. UK.
(53° 15' N -2º 33' W).
Site classification: Suburban
Sky darkness: 4.2 ( UMi ) <Limiting magnitude>
Conditions: Clear sky, Moon, past full, just rising.
Telescope: 80mm f/5 rich field refractor.
Mounts: EQ5
Eyepieces: 18mm Orthoscopic, 5mm Lanthanum.
Magnification: X22, X80.
   		 This was a difficult double to observe as I needed to peer through the branches of a nearby damson tree. Using X22 I found a nice wide pair of white stars. The PA between the two was visually estimated to be about 30deg. Increasing the magnification to X80 split the companion into two stars. An interesting triple system to observed with this small telescope. I should have noticed STF 1473 in the view but didn't note it for some reason! A better view without the branches perhaps! 
Now, where did I put that axe!!
 
 

 

 
Bob Hogeveen
Star: Struve 1474 + 1474b
Date & Time: 1st March 2002 (23:00 UT)
Seeing: 4 <1-10 Seeing Scale (10 best)>
Location of site: Annen, The Netherlands
53ºN, 6ºE
Site classification: Village backyard
Sky darkness: 5 (before moonrise) <Limiting magnitude>
Transparency: 8 <1 worst - 10 best>
Temperature: 1º C
Telescope: Celestron C11,
Guan Sheng 80mm f/6
Eyepieces: Ultima 30mm, LV 15mm
Magnification: C11: 93x. GS80: 32x
   		 This wide and bright double holds a nice surprise: B is also double.

The bright A-B pair can be seen easily with all magnifications. 
The primary is white and the combined secondary is yellow. The C11 showes B-C as two yellow stars. Their separation is ~2" and the magnitude of C is 7.6. 

A nice group, but the low altitude spoiles the image. This pair gets a rating 2 for the C11 and for the GS80.

 

 
Steve Bodin
Star: Struve 1474 + 1474b
Date & Time: 11 March 2002, 11pm to midnight
Seeing: 4-5 <1-10 Seeing Scale (10 best)>
Location of site: Silverdale Wa, USA
47N, 123W
Site classification: Suburban
Sky darkness: 5.5 <Limiting magnitude>
Transparency:  <1 worst - 10 best>
Telescope: 4 inch Meade 107D on ETX mount
Eyepieces: 17mm , 8mm 
Magnification: 60x, 125x 
 
 
 
 
 
 
 
 

Star: Struve 1474 + 1474b
Date & Time: 22 March 2002 10:30pm local
Seeing: 6-7 <1-10 Seeing Scale (10 best)>
Location of site: Silverdale Wa, USA
47N, 123W
Site classification: Suburban
Sky darkness: 3-4 <Limiting magnitude>
Transparency: 4 <1 worst - 10 best>
Telescope: Celestron C8 SC
Eyepieces: Videocamera PC164, 3x teleconverter 
Magnification: Equivalent to appx 333x at prime focus, 1000x at 3x
 

 Wide double at 60x, but B looked like a streak oriented north/south. At 125x the secondary split cleanly into two equal components. Nice surprise. All appeared blue. Noticed another double in the same field to the south and thought that I had made an unexpected discovery, but referred to the Hydra 33 list and discovered that it is STF 1473!
 
 

Easy split of the secondary with the C8 and videocamera at 3x magnification. Measurements: AB: 72.7 sec, PA 026.6 deg, AC 66.0 sec,  PA  027.4 deg, BC 6.79 sec, PA 197 deg. 
 
 
 
 
 
 
 

 

 
Kevin Barker 
Star: Struve 1474 + 1474b
Date & Time: 24th March, 2002
Seeing: 8-9 <1-10 Seeing Scale (10 best)>
Transparency: 8 <1-10 Seeing Scale (10 best)>
Location of site: Auckland, New Zealand. 
Site classification: Suburban Backyard 
Sky darkness:  <Limiting magnitude>
Moon: Gibbous moon in sky.
Telescope: Zeiss APQ 100/1000
Mount: Zeiss Ib mount, setting circles.
Eyepieces: Zeiss 0.965” orthoscopics,
4, 6, 8 and 12.5 mm, H 40,
Zeiss 4 ocular turret. 
Magnification: 80x
 		 Blue primary and nice pair of white and blue well separated.  White and blue pair about 7”.  Impressive.


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