[sac-forum] Re: Call for Hercules
- From: "Jack Jones" <Telescoper@xxxxxxx>
- To: <sac-forum@xxxxxxxxxxxxx>
- Date: Wed, 29 Jun 2005 23:17:47 -0700
I tried for IC 4593, the White-Eyed Pea, and it is a real challenge object, and
with a 20" too. You have your work cut out for you trying to bag this one. You
might want to skip it and come back after getting the others. I spent some time
at GCSP with high power and UHC to no avail and gave up, but it sure made Abell
2151 seem easy. I'll try again this weekend.
Jack Jones
Public Events Coordinator
Saguaro Astronomy Club
Phoenix AZ
Telescoper@xxxxxxx
www.saguaroastro.org
Sp@m: Don't try - Don't reply - Don't buy.
----- Original Message -----
From: AJ Crayon
To: SAC Forum
Sent: Wednesday, June 29, 2005 8:26 PM
Subject: [sac-forum] Call for Hercules
With the Independence Day holiday coming up I thought a post for the July
constellation worthwhile. Perhaps some of us will get lucky enough to get out
under dark skies without any smoke in the sky. As has been the case, here are
the objects for Hercules cut straight from the newsletter article.
Our July constellation is Hercules. I've chosen the following order that is
not by NGC or RA, but by a somewhat convenient sequence to minimize star
hoping. So, its on to the objects. First is the white-eyed pea, better known
as the planetary nebula IC4593 located about 3.8° southwest of omega Herculis.
As with all planetary nebulae look for color, blinking effects and try any and
all filters at your disposal. Second is Abell 2151, the Hercules Galaxy
Cluster, and is found about 50' east of 5 Herculis or almost centered on
NGC6047. The SAC database notes there are 20 galaxies 14th to 15th mag. How
many do you see in your telescope? Now slew northeast to NGC6210 (that's
NGC6210 and not the erroneous NGC listed last month) another planetary nebula
located about 2° southwest of 51 Herculis. Continuing our northward jaunt take
a look at, visible in an 8X50 finder, M13. At one time, a long time ago, I had
difficulty determining which side of the Keystone to search. A technique I've
found helpful is to go to the constellation Lyra and find the stars gamma and
beta Lyrae, the pointer stars for Alberio - hang with me now I'm getting there.
Instead of going there, go the other way, these pointer stars bring you just
north of the Keystone. M13 is on the other side of the Keystone from Lyra!
While on globular clusters, continue north to 4.8° east of northeast from tau
Herculis and find NGC6229. Finally, slew southwest, to within 2.8° southeast
of chi Herculis and find another planetary nebula, NGC6058. Remember with all
planetary nebulae look for color, blinking effects and try filters. If you
don't have any, try to borrow one for a friendly observer!
Go out and get a look at these beautiful deep sky objects, consider what you
are seeing, take some insightful notes and pass them on to us!
Clear, and smokeless, skies to all
aj
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