Obsering report: Where The Stars Go To Die (8/19)
- From: "Lumpy Darkness" <darkness.lumpy@xxxxxxxxx>
- Date: 22 Aug 2006 14:02:27 -0700
Went to Henry Coe State Park Saturday, already tired from being out at
Houge Park in town public star party the night before. My observing
buddy Richard had suggested a pot luck for the group and put word out
on our mailing list, TAC (www.observers.org). I stopped at the Morgan
Hill Safeway for chips, wine and a few other goodies to contribute.
I was first in the parking lot at Coe. Richard arrived less than five
minutes later. Soon other began to show. Tony, Bill, Chuck. We sat at
the picnic bench under the giant oak at the south end of the lot, warm
afternoon sun keeping the chill of the steady breeze at bay. Comments
about the breeze were softened by the fact there was no dirt blowing.
That was a good sign.
The pot luck was set for 6:30, and right about then cars began rolling
in as if someone was ringing a dinner bell. Oddly, not a lot of people
participated. I think Bill won best entry, with his homemade pasta
salad and bottle o Zin. Nice going Bill. There was also sushi, chips
and dips, all sorts of goodies. We chowed, cleaned up, and it was time
to start setting up. My only regret about dinner was my bad taste in
having the Zin with the chicken dogs, intead of the beef franks.
The sunset was good once again. It is really a beautiful spot, San
Jose to the northwest under a promising and thickening layer of low
moisture. To the south Fremont Peak stood prominantly over a thick
wall of fog already pushing its way deep inland toward Pacheco Pass.
These were all good signs. Sunset happened, right on time. No green
flash. Maybe a green sprite, but I'm still flashless.
There were few hikers, if any. One mountain biker left after dark. We
had two visitors that live just down the mountain in Morgan Hill. Nice
husband and wife. The wife is involved in education, and
coincidentally was looking for astronomy resources for an associate.
Didn't know we'd be at Coe, they'd just gone for an afternoon drive and
found us. Stayed until well after dark, looking through several
telescopes. That was our public outreach at Coe, while our lower
elevation counterparts did their outreach down the mountain to the
south at Coyote Lake.
The sky began bright, as the fog layer was not thick until later in the
evening. Even so, the sky was much better than back in town, either my
yard or Hogue Park. By midnight the fog was a thick blanket, fingering
into the small valleys and canyons below us. From midnight to three
thirty it was about as dark as I've seen it at Coe. The summer pattern
held true, and we had a very good night.
Richard and I began observing soon after the guests left. I'd been
putting together observing lists for months, and when Richard suggested
we just do something easy, like working out of the Night Sky Observers
Guide, it sounded great. Back to the days of having no plan, just
wandering the sky in search of new quarry. We began in Aquila, which
was nicely placed high in the southeast.
I'd spent a lot of time there in the past. It is the graveyard of the
stars, where they seem to go to die, with more planetary nebulae than
any other constellation. All the dead souls of the stars.
Here is what we observed between about 10 pm and 3:30 am in 18" f/4.5
Dobsonians.
NGC 6749, globular cluster in Aquila. Off the western wing of the Big
Bird, this is a very difficult globular to observe. I've picked it up
before, but there must have been some glop in the atmosphere early
on,as this, our first target, was very elusive. Three dim stars
running mostly N/S pointed to a dim haze to their south. An arc of
stars to the southwest and a single star to the northeast seem to
border the haze. This one is a challenge object. I tried 20mm, 12mm
and 7mm Naglers. I have to list this as a DNF that night as the "haze"
was too much like, lumpy darkness....
NGC 6751, planetary nebula. In an easy location off the naked eye tail
stars of Aquila. This small planetary was visible using 20 Nagler and
no filter. With 7 Nagler and NPB filter it appeared annular, and
without a central star. Occasionally I felt there were "sprites"
popping in and out along the outer edges of the disk.
The planetary nebula PK40-0.1 is also known as Abell 39. There are
three stars running generally e/w under the western wing of the Eagle
at mags 5.6, 6.5 and 5.2 tht point directly to the target. This is
another challenging object. The most convincing view was with a 12
Nagler and OIII filter. The planetary sits just off a mag 11.3 double
star 5' to its nw, and mag 13 star 1.3' to its n. The object was very
"in and out" at first, settling into occasionally held with averted
vision.
ngc6755 was next. This is a nice large open cluster with another small
open, ngc6756, next to it. The view is somewhat reminiscent of the
pair M35 and ngc2158. It is a short star hop from Abell 39. The
cluster appears to be in three main sections, rather unusual, separated
by dark lanes. ngc6756 fits in the same field using a 20 Nagler.
ngc6760, globular cluster. Just over three degrees south of the open
clusters sits this easy to view globular. Its bright core diffuses out
quite noticeably. It is an easy object to find and see. It seems on
the verge of resolving, and appears to extend asymmetrically more to
its s.
ngc6773, open cluster in Aquila. My notes say "yawn".... this small
open is in a very easy to find location, but appears to consist of
maybe four stars. I have to agree with Richard, its OC's like this one
that makes one lose their taste for opens!
ngc7184, galaxy in Aquarius. We shot over to this galaxy as it was
creating a stir among several of the observers. I think it was Albert
who suggested it. Jamie could be heard in near ecstasy ooohing and
ahhhhing over it. Before going further, I'll mention that that is part
of the fun being out in a large group. Interestingly, some people
don't hear the others out there, but I sure do. I knew Greg was having
a blast breaking apart Stephen's Quintet. Matthew's voice was
unmistakable at the south end of the lot. Richard and I kept looking
over and seeing Jamie's scope standing alone, as he was spending a lot
of time by Albert - we considered moving his scope to the other side of
his car while he was on extended leave. I think everyone was having
fun, and of course, as all this took place the sky continued to darken
as the fog layer grew ever thicker.
Back to 7184. It was worth the trip. It is a large no-doubt-about-it
lenticular galaxy, extended ne to sw, and quite elongated. To its
north extend three other galaxies, ngc7180, ngc7186 and ngc7188. Only
the last one required some effort to pull out.
ngc7137 is an interesting galaxy in Pegasus, our next stop using the
Night Sky Observer's Guide. It too is in an easy location to hop to,
using a series of mag 3 and mag 4 "constellation figure" stars lined up
e/w to get there. A star nearly touches the western edge of the
galaxy, visually changing its shape from round to somewhat fan shaped.
In fact, Richard suggested it looked like Hubble's Variable Nebula
(aka, Richard's Comet). I agreed.
On a line south of the preceding stars of the Great Square of Pegasus
sits ngc7469, a roundish galaxy with IC5283 dimly sitting very close
by. The brighter galaxy was mag 13 and elongated 1.5'x1' ese/wnw.
Sitting perpendicular to it to the ne is the IC galaxy, clearly visible
at mag 14.8 and elongated .8'x.4' ne/sw. This was the dimmest object
seen easily during the night.
Nearby was Pal 13, one of the difficult Palomar globulars. We were so
close by, and its in such an easy location, we figured "why not?". The
glob is moving toward us, so eventually it should brighten up ;-) But
at its current mag 15.6 all I could pick up was a very occasional glow,
slightly elongated, with the 7 Nagler. This also would have to go into
the DNF file, as I don't know if I was seeing it, or just some lumpy
darkness. While in the area, I kept running into the big and bright
galaxy ngc7479 to the sw. This galaxy is worth a visit!
ngc7625 is listed as a round galaxy in Pegasus, about 4' northeast of
Markab (Alpha Pegasi). It appeared to have an elongated core, wsw/ene
with a brighter area to the ene. I thought it might be a face on
spiral with a possible bar.
By now it was getting late. Richard and I kept saying "this'll be the
last object"... but somehow, kept going. It was about 3 a.m. and we
were very surprised to see how many die hards there were still
observing. We had some conjecture that places like Coe drew more of
the die-hard crowd, whereas other places - Montebello and Coyote
appealed more to the out-by-midnight or one observers. Whatever, it
was astonishing to see so may people still at it.
On the border of Pegasus and Pisces is ngc7743, a nice large bright
galaxy with a brighter inner section and a stellar core. It sits in an
attractive field with several bright finder stars. I felt it looked
spiral with a hint of arms.
Our last target in Pegasus was ngc7800, an elongated galaxy on the
"line" from Gamma to Alpha Pegasi. I found it surprisingly difficult
to locate, probably a result of fatigue. Perhaps I should have had
more pasta salad at dinner. The galaxy was unusual in appearance. It
was rather elongated, but not overly so, about 3x2 nne/ssw. What was
odd was a noticeably brighter nne end. After leaving the eyepiece, I
looked at the DSS image and sure enough, this galaxy is disturbed and
does show variation at its extremes.
Richard and I left Pegasus at that point, and headed to the waters.
down deep, low in Cetus, on its western extreme bordering Sculptor, is
ngc45. This is a big galaxy. It reminds me about the big southern
galaxies I rarely visit. ngc45 is encouragement. While this is a
large object, there is a mag 6.8 star very nearby in the field that
makes the galaxy more difficult that you'd expect. The galaxy seemed
involved with a star to its north, extending dimly away to its south. I
enjoyed the subtle nature of this target's soft and obscured glow. It,
like the other's I'd seen during the night, were all enjoyable. I will
dis no galaxy, lest others dis mine....
The final target of the night was ngc145, up higher in the western end
of Cetus. It turned out to be my favorite observation of the night. It
appeared large and elongated 3x2 from the wnw to ese. At lower power
it had an even brightness, and no central concentration. When I mag'd
up with the 7 Nagler a weak central concentration appeared, oddly,
oriented n/s, almost perpendicular to the major axis of the galaxy.
Checking the DSS image afterwards, I called Richard over for a look.
It is sure fun to pick out detail in these distant objects....
The night was over. People were breaking down, other than few of the
most determined of the hard core. We talked briefly with Albert and
Jamie, then hit the sack. I woke with the sun coming in the windows of
the truck, after 3.5 hours sleep. We packed up the scopes and headed
out.
Back down the hill, through the fog, to downtown San Jose and the
bright night skies of home, where not only the stars, but whole
constellations go to die...
.
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