Burnham 985 A-C
  
Dave Jenkins 
Star: Burnham 985 A-C
Date & Time: 6 July, 2004
Seeing: 6 <1-10 Seeing Scale (10 best)>. 
Transparency: 3 out of 4
Location of site: Orem, Utah
Lat. 40.28 Long. 111.70

Site classification: Bright Suburban
Sky darkness
:  <Limiting magnitude> 

Telescope: C11, TV85
Eyepieces: 20mm
Magnification: 140x
Several bright stars in FOV.  Secondary at 12:00.



  
   

Steve Bodin 
Star: Burnham 985 A-C
Date & Time: 31 July 2004, 11 pm to 1 am local
Seeing: 6-7 <1-10 Seeing Scale (10 best)>. 
Transparency: poor
Location of site: Silverdale WA, USA
47N 123W
Site classification: suburb-rural
Conditionstemp 60F, dry
Sky darkness: 4.5 <Limiting magnitude> 
Telescope: Celestron C8
Eyepieces: not used
Additional: DX-8263SL video camera at prime focus
Magnification: app. 350x

Started with the wide ones to see if any other components could be found.  Firstly, noticed that the C component was way dimmer than 9th mag more like 11. Integrated the camera to one full second exposure and found a close B component and a very dim D star near the C component. BTW the WDS lists the AC pair as HJ1499 and the other stars as BU 985.  Measurements: AB 6.23 at 165.3 deg PA, AC 21.37 sec at 354.5 deg PA, CD 8.7 at 64.6 deg PA.
 



 

   

Morgan Spangle 
Star: Burnham 985 A-C
Date & Time: 29 July 2004; 3 August 2004
Seeing: 8 <1-10 Seeing Scale (10 best)>
Transparency: 4-6 <1-10 Scale (10 best)>
Location of site: Purchase, New York
Site classification: Bright Suburban
Sky darkness
:  <Limiting magnitude>

Conditions: 75 degrees F, falling, dewy
Telescope: Borg 101ED refractor
Mount: Vixen
GP-DX mount, Sky Sensor 2000PC, Palm device running Planetarium software
Eyepieces: Takahashi Orthos: 18mm, 9mm, 5mm, 2.8mm, mounted in a Borg turret eyepiece holder
Magnification
: 35x, 71x, 128x, 228x
  
very wide and easy, even in the haze, at 71X

     

Ilario Melandri 
Star: Burnham 985 A-C
Date & Time: 29/07/2004
20:00-24:00 UT
Seeing: 7<1-10 Seeing Scale (10 best)>
Transparency:  ---
Location of Site: S. Romualdo, Ravenna, Italy
Site classification: Rural
Temperature: around 19ºC
Sky darkness: -- <Limiting magnitude> 
Telescope: 150mm f/15 refractor
Eyepieces
:
16mm and 6mm Plossl, 9mm ortho
Magnification
:
140x, 250x, 375x
I think that the companion star is much fainter than the 9.5 listed magnitude.


    

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