Star:
Burnham 870
Date & Time:
July 12-13, 2003
Seeing: 3 [see
http://www.backyard-astro.com/Logs/logsreport.html
Transparency: ---
Location of site:
45°N // Tomahawk
WI, USA
Site classification:
Rural
Temperature: 56°F
at 10pm CDT, dropping to
50°F by 3:15am CDT
Sky darkness:
10/10 (Thompson
Scale)
Conditions: Not too
much dew; extreme
Lunar interference; generally
pleasant
Telescope: Meade
8" f/10 LX-10 (Snoopy )
Eyepieces: 32mm,
13.8mm, 9mm, 5mm
Magnification: 63x,
147x, 226x, 406x
Star: Burnham 870
Date & Time:
September 4-5, 2003
Past local midnight, after
moonset
Seeing: 7 <1-10
Seeing scale (10 best)>
Transparency:
7 <1-10 scale (10 best)>
Location of site:
45°N // Tomahawk
WI, USA
Site classification:
Rural
Temperature: 56°F
at 10pm CDT, dropping to
50°F by 3:15am CDT
Sky darkness:
7/10 (Thompson
Scale)
Conditions: Not too
much dew; generally pleasant
Telescope: Meade
8" f/10 LX-10 (Snoopy )
Eyepieces: 32mm;
13.8mm; 5mm
Magnification: 63x,
147x, 406x
|
My first new attempt for
the night was also a failure, but as Arnold says:
"I'll be back."
63x placed AB in a very beautiful field: a circular pattern
was below
it, and a meandering starpath lead from AB towards the
upper right,
which reminded me of the footprints in Lynx.
147x showed AB as one star with a few other doubles in
the field
[visual?].
406x at first showed only an elongation in A's diffraction
rings, but
in moments of near-perfect steadiness B was detected
as a
definite 'bump'. [This one was tough... no difficulty
number?]
|