Observing Report by Michael McCulloch
The Smoky Mountain Astronomical Society hosted a star party at a Unicoi Crest
overlook (shown right) on the Cherohala Skyway on Oct 5th, 2002. About 8 persons
attended through the course of the evening and at least four telescopes were
setup, including the club's 20" (shown below). I brought my Celestron
Nexstar 8 that I've owned for about 2 1/2 years.
Upon leaving very clear skies in Knoxville, I was concerned that fog might
develop later in the evening since the dewpoint at 5:30 PM was well above the
forecasted low for the night. However, I took the chance and made the drive to
Unicoi Crest. The roads are all well marked and the drive was easy via Hwy 411,
Hwy 68, and the Cherohala Skyway. I arrived at the overlook at about 7:40 PM.
The conditions were not reassuring as the 4450 ft. overlook was mostly enveloped
in clouds upon arrival.
At about 8:15 PM, the clouds began to clear and I was rewarded with
continually improving views of the summer Milky Way as darkness fell. The sky
was awash with stars. I had not seen such skies since a vacation to the Grand
Canyon some 7 years ago. I could see actual structure in the Milky Way -- dark
dust regions, clusters, etc. The Unicoi Crest overlook is a truly dark sky site
for this area. The sky was much better than I had even experienced on a recent
Big South Fork visit.
I aligned my goto scope with Antares and Polaris and placed M27 (Dumbbell
Nebula) in the scope. The view was the best I've seen in my scope and many stars
were visible in the field as well as some structure in the nebula itself. At
that point, Bob Arr was gracious enough to loan me his 1 1/4" O-III filter
to try to coax more detail from the nebula. Additional structure was noted, but
the O-III filter did darken the field considerably (almost too much for my
tastes).
As it grew darker I went straight for the star clouds of Sagittarius. I
observed M16 (Eagle Nebula), M17 (Omega Nebula), M8 (Lagoon), M24, M22 (very
nice glob), M54, and M70. All were the best I'd ever seen with my scope. While
observing M17, a satellite crossed the field of view. I just swept my scope
through Sagittarius for a while noting the mind-boggling number of stars. I went
to M11 (Wild Duck Cluster) and was stunned. I'd seen hints of the "diamond
dust" of the faint stars in the cluster before, but this time I could
actually resolve the "dusting" of some fainter stars in the center of
the cluster.
I then headed for M57 (Ring Nebula) and increased the magnification. Again,
it was the best detail and contrast I'd ever seen with my scope. M13 was
excellent as usual. I struggled all evening to get my bearings and pick targets
because there were so many constellations visible that I've never seen from city
locations. For example, many stars were visible in Ophiuchus which are normally
never seen from my typical observing sites (that I formerly considered dark
sites).
Several meteors were noted during the evening. I must have seen 12 or so
myself. I walked around for a while seeing what other folks were doing. Bob Arr
(shown right) offered to show me NGC7789 in his 14.5" Starmaster with his
2" Widescan II, 30 mm eyepiece. The view was stunning. So many stars! That
was my first taste of the oft-described "porthole" effect of a good
2" eyepiece. I had dreaded the moment... Now I have to have 2"
eyepieces. :-)
I went back to my scope and located Uranus. I increased the magnification to
200x and was rewarded with a small, blue disk. At that point, a cloud moved in
and the skies were blocked for 5-10 minutes. However, it eventually dissipated.
This occurred perhaps three times between nightfall and 11 PM. After about 11
PM, a slight breeze picked up and the skies became very clear until I left at
midnight.
The downside of the evening was the heavy dew. I used a nylon jacket to drape
over my scope when I left it and upon returning, the jacket was soaked with
water. Everything was getting wet fast. I begged a 12 V blower after observing
Uranus and temporarily dried the corrector of my Nexstar 8 (I did have a dew
shield that worked for a while), but it was a losing battle for the rest of the
evening with my scope.
I did get some additional views of M31, M33, the Double Cluster in Perseus,
as well as some more obscure open clusters in the Perseus region. All were
excellent.
Bob Arr then again offered up some views in his scope of the Veil
Nebula, M33
(Pinwheel Galaxy), and the Pleiades. The view of the Veil (the O-III filter
really helped here) was incredible and it was the first time I'd really seen it
at a scope. Bob even allowed me to drive the scope and follow the circle of the
Veil. Before leaving, I grabbed my binoculars (the only thing that was still dry
:-) and observed the Milky Way around Cygnus. I even saw a faint meteor streak
through the field of view at one point.
The evening was a success and I truly enjoyed the dark sky, along with the
hospitality of Bob Arr. My parent's home is only 36 miles from Unicoi Crest,
therefore I may make many more visits in the future! It is more convenient, with
less traffic, than similar locations in the Smokies.
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