Otto Struve 298 

Bob Hogeveen
Star: Otto Struve 298
Date & Time: May 08 2001 
Seeing: 6 <1-10 Seeing Scale (10 best)>. 
Location of site: Annen, The Netherlands
(53ºN, 6ºE) 
Site classification: Village backyard
Sky darkness: 3.5 (UMI) <Limiting magnitude> 
Sky : Twilight and clouds coming in 
Telescope: Celestron C11 (11" f/10 SCT) 
Magnification: 200x
Harschaw's Scale: 4 (LX10) <1 to 5> 		 The story of OS 298 is just the other way around as with STF1834. After the  nice and easy split of STF1834 I turned to this double, expecting a similar easy split. But  no way. Nothing to be seen...

Yes, there were two bright stars, but 122" apart. The star on the position
mentioned in the  33-list was absolutely not double. I tried 400x on it, but nothing there. Unfortunately the  clouds came in and I didn't have e real good look at high power, but checking out Hyparchos  later I suppose a good look wouldn't have helped :
The distance of the stars A and B of OS298 was only 0.32" in 1991...
What I did see of this multiple system was AB - C, where AB together is mag.
6.8 and C 7.6.

For fun I will try AB with my CG11 at 500x sometime

 
Cor Berrevoets
Star: Otto Struve 298
Date & Time: 11-may-2001 20:00 - 22:15 UT
Seeing: ? <1-10 Seeing Scale (10 best)>. 
Location of site: Ritthem, The Netherlands
51° 27' N, 003° 38' E
Site classification: Suburban
Sky darkness: 4.8 <Limiting magnitude> 
Telescope: Intes Micro 6" F10 Maksutov 
(35% obstruction)
Eyepieces: 7.5, 10, 15, 20 and
26 mm Plössls
Magnification: 360x		 Although Otto Struve 288 had allready warned me I still had a go at this one. Seeing was still preventing me from splitting these stars. At moments of good seeing and use 360x magnification I could see them elongated at best. The closer double like Zeta Bootes is often easier to split in my view. 

 
Ilario Melandri
Star: Otto Struve 298
Date & Time: 26 May 2001,
19.32 – 21:08 UTC
Seeing: 8 <1-10 Seeing Scale (10 best)>. 
Location of site: S.Romualdo, Ravenna, Italy. Elevation: 0 m
Site classification: rural
Temperature: +19ºC -> +16ºC
Sky darkness: 4 <Limiting magnitude> 
Telescope: 150mm f/15 achromatic refractor
(lens by Romano Zen, Venice)
Eyepieces: Clave Plossl 16 mm
Magnification: 140x