Otto Struve 18

 
Steve Bodin 
Star:  Otto Struve 18
Date & Time: 12 Sept 2003 11:30pm to 2 am
Seeing:   <1-10 Seeing Scale (10 best)>. 
Transparency: Fair
Location of site: Silverdale WA, USA
47N 123W
Site classification: suburb-rural
Conditions: temp 45-50F, damp
Sky darkness: 4.0 due  moon <Limiting magnitude> 
Telescope: Celestron C8
Eyepieces: Video camera DX8263SL at prime focus and 3x
Magnification: app. 333x and 1000x		 Finally, one nutcracker for the nights festivities. Difficult to see, I think the seeing was degrading. Well another yellow-blue pair. Measurement, somewhat poor, 1.63 sec at 202.8 deg PA.



 

 

 
 Ilario Melandri
Star:  Otto Struve 18
Date & Time: 22/9/2003 
Seeing: 7 <1-10 Seeing Scale (10 best)>. 
Transparency:  --- <1 worst - 10 best> 
Location of site: San Romualdo, Italy
Site classification: Suburban-rural
Conditions: Temperature 19º C 
Sky darkness: 4.5 <Limiting magnitude> 
Telescope: 150mm (6”) f/15 refractor
Eyepieces: 16mm Plössl
Magnification: 140x		  

 

 
William L. Schart 
Star: Otto Struve 18
Date & Time: 27th, September, 2003
9:00 pm CDT ->
Seeing: 8  <1-10 Seeing Scale (10 best)>. 
Transparency: 
Location of site: Texas, USA
Site classification: suburban
Conditions: No moon
Sky darkness: <Limiting magnitude> 
Telescope: C8
Eyepieces: 
Magnification: 		 The toughest nut on this list; at low power it did look a bit suspicious, elongated at mid power, and successfully split at high. I estimated the PA at 220°
 
 
 
 
 
 
 
 
 

 
 
 
Morgan Spangle
Star: Otto Struve 18
Date & Time:  19 October 2003
Seeing: 7 <1-10 Seeing Scale (10 best)>. 
Transparency: 8 <1 worst - 10 best>
Location of site: Larchmont, NY
(40.55.26N,  73.44.43W)
Site classification: Suburban
Sky darkness:  <Limiting magnitude> 
Temperature: 45-40 degrees F
Telescope: Meade ETX 125 OTA 
(127mm, 1905 f.l., f/15)
Eyepieces: 18mm Tak ortho; 9mm Tak ortho;
7mm Tak ortho;
12mm Meade Astrometric eyepiece, barlowed
with 1.7X TeleVue barlow. - PA estimates
noted below are using this eyepiece.
Magnification: 106x, 212x, 272x, 270x
 		 couldn't resolve; the ETX has real problems with its focuser. I am getting an electric focuser to see if I can resolve these tight doubles that are well within its capability, but seem a bit fuzzy. It could just be the optics are not up to it; we'll see.
 
 
 
 
 
 
 
 
 
 
 

 

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