Star: Struve 1848
Date & Time:
26 May 2005 22.46 UTC
Seeing: IV
Antoniadi
Transparency:
Location
of site: Turin, Italy, 4504N 0742E
Site classification: Urban area
with strong light
pollution
Conditions: clear, no wind, mild
temperature, little hazy
Moon: none
Sky
darkness: 2.5-3 (limiting magnitude)
Telescope:
Takahashi Mewlon 300,
Dall-Kirkham 300/3572 reflector
Mount: 10 Micron GM2000 with
FS2 controller
Eyepieces: Televue
Plossl 15 mm.
Magnification:
238X
Diagonal: Yes, Televue 2"
Everbrite |
Very difficult double
cause
the poor trasparence of this sky and the turbulence induced by the roof
of my
house almost in the field of view. For the last reason this star is
splitable
only with plossl 15 mm but not with plossl 8 mm. I can split it only
knowing
exactly where is the secondary star (usually I do not want to know the
position
angle of double stars I'm observing). Primary star pretty bright, white
with slight yellowish hue. Secondary
very faint and pretty close to the primary almost north of this. No
visible
rings. Extimated PA about 5 degrees. An hard, very unbalanced,
challenge for
medium instruments under good conditions.
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