[sac-forum] Re: For brave observers
- From: "Richard Harshaw" <rharshaw2@xxxxxxx>
- To: <sac-forum@xxxxxxxxxxxxx>
- Date: Fri, 21 Aug 2009 09:59:36 -0700
?So far I've only received observations from Dick Harshaw. Can't we do
better? :)?
I certainly hope so!!!!
Richard Harshaw
Cave Creek, AZ
President, The Saguaro Astronomy Club (2009)
From: sac-forum-bounce@xxxxxxxxxxxxx [mailto:sac-forum-bounce@xxxxxxxxxxxxx]
On Behalf Of AJ Crayon
Sent: Friday, August 21, 2009 9:57 AM
To: SAC Forum
Subject: [sac-forum] For brave observers
Here's a list of objects for observing for those willing to give it a try
for this weekend. Naturally they are from the monthly Call for Observations
list and include Ophiuchus and Cygnus. So far I've only received
observations from Dick Harshaw. Can't we do better? :)
There seems to be more time for another pass at Ophiuchus. This time we
will concentrate on globular clusters of varying magnitudes and
concentrations. Starting out one of the brighter ones is NGC6235, you
should be able to resolve some of the 14th to 16th mag stars ? count them!
Take extra care in locating the next 3 because there are 3 others witching
5°. First of the 3 is NGC6293 and is a little brighter than the first one
but about twice as big. Moving on to NGC6304, towards the southeast, check
to see if the brighter middle is noticeable. To the northeast is NGC6355
with its gradually brighter middle. These 3 form an equilateral triangle
about 3° on a side and are part of the Herschel 400 list. Moving on to a
challenge is IC 1257 a small, faint globular cluster. It was identified as
a distant globular cluster in 1996. Perhaps even more of a challenge is HP
1, which I also will call small and faint. As an aid to finding the
globular its location is 17 31.1 -29 59. The HP is for Haute Provence, a
French Observatory. The final globular is located almost between beta and
gamma Ophiuchi. It is NGC6426, another Herschel 400 entry. Can you detect
the elongation described in the NGC description?
With only two prior trip through Cygnus, now is the time for another. This
list will include so not so well know objects and, for those their position
will be listed. First we begin with the open cluster NGC6834 that is rather
small and a little compressed. Next is the not so well known open cluster
Biur 2, located at RA 20 09.2, Dec +35 29. From the SAC database it is 13?
has 10 stars with brightest 7.9. The asterism Red Necked Emu, located at RA
20 13.8, Dec 36 30 is 45? and has 29 Cygni as its tail. What color stars do
you see and what is the PA. Another open cluster that is off the beaten
trail is Ru 173, located at RA|20 41.8, Dec +35 33. Its brightest star is
reported to be 8th mag, amongst the 20 others in its 20? area. Be sure to
include size, number of stars and the brightest in your observing report
along with any other interesting notes. Moving from open clusters to
planetary nebula we start with NGC7008 and, although it is a Herschel 400
object, it is rather faint at mag 12 with a mag 13.9 central star. Note its
elongation and estimate its PA. Also what is the double star attached
towards the south? The other planetary is NGC7027 is small and bright.
Skip the mag 16.5 central star and its bizarre spectrum. This last object
is in the Best of the NGC.
Enjoy! :))
AJ Crayon
Phoenix, AZ
Other related posts:
