[Chaos-l] Farrington report
Michael Hrivnak
mhrivnak at hrivnak.org
Thu Mar 19 00:43:08 EDT 2009
Tonight was a good evening for observing. Walter Fowler and I were the only
attendees.
Walter had a new GOTO mount to try with his televue refractor. We worked out
some kinks and figured out how to get it working. Once the mount stopped
"locating" objects in the mud and conceded that they were in the sky, it was
quite a lot of fun to use. It will make an ideal public-observing-session
setup.
Walter had another new toy: at WSP he picked up a used Televue Powermate 5X
barlow. You heard me. That's 5, as in five. After I initially dismissed it
as pure silliness, he talked me into trying it on Saturn with my scope. I
dropped in my Pentax 10mm eyepiece, which put the magnification at a whopping
1027x! When you could get Saturn into the field of view, it was huge! All 5
visible moons were on the same side of the planet, and stretched nearly across
the entire field of view. Despite the crapshoots that were focusing and aiming
the scope, during brief moments as Saturn zipped across the field of view,
there was a lot of detail. I saw the shadow of the rings on the planet
surface and even saw empty space through the rings on either side of the
planet.
I did a side-by-side comparison of my Pentax 10XW with Walter's Nagler 9.
They show nearly identical fields of view, but the presentation is different.
Despite more magnification, the Nagler actually caused objects to look smaller.
The field of view, however, extended all around in typical Nagler form.
As for objects, I mostly cruised through the highlights of my last observing
session. Early on, we spotted the remains of the Cosmos 1939 Rocket moving
through Cancer at about 3.6 magnitude. The air was quite still, and I found
lots of detail in some great objects while the dryness lasted. Walter left
around 10:20pm. By 10:45, I noticed that the sky was glowing more than usual,
and everything was very wet. A quick check with my iPhone revealed that the
humidity in Pittsboro was 90% and rising! That's way above the forecast,
which is a shame. I packed up at that point and headed home.
Michael
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