[sac-forum] Lest I Forget

From: "AJ Crayon" <acrayon@xxxxxxx>
To: "SAC Forum" <sac-forum@xxxxxxxxxxxxx>
Date: Thu, 2 Sep 2010 09:55:34 -0700
Things are getting rather hectic at this time so, before I forget, here's the 
observing list for this month.  If you get a chance to go out and observe be it 
this weekend or next, take this with you and submit your observations for the 
newsletter.

Call for Observations
 

Now for the following month we have a new comer – Serpens also called Serpens 
Cauda, which I sometimes call Serpens to the east as in east of Ophiuchus.  
After that brief introduction we will look for numerous stellar collections and 
will start with Ru 135 located at 17 58.0 -11 39.  It doesn’t have a magnitude 
but is listed as 11’ with 20 stars of similar brightness.  Second is NGC6535 a 
class XI globular cluster and its 9.3 mag and 1.3’ should be easy to spot.  
Swinging much farther south is 6th mag NGC6605 with stars from 10th to 12th 
mag.  Did you find it?  Now we move on to the choice of choices objects for 
this month – M16!  Need more be said about this?  Yes, describe the stars and 
nebulosity in your field of view and try some filters to see the results.  Now 
we will try a dark nebula - LDN  564.  While dark nebula don’t have magnitudes 
its size is listed as 45’X15’.  Have a look and see what you think.  Coming 
down to the final two is IC4756 an open cluster.  It has about 80 stars from 
mag 8.7 on down in 39’.  Our final one, another open cluster, comes from our 
good friend in Flagstaff - Archinal 1, located at 18 54.7 +05 33.  It is about 
4° west of IC4756, is 1.5’ and has 24 stars from mag 13.4.  It won’t be very 
easy to spot. Can’t you just see Brent grinning from ear to ear?

 

We did Pegasus in late 2005 so it is time for another pass at the Winged Flying 
Horse.  This constellation is composed of mostly galaxies and a number of nice 
objects still on SAC observing lists.  Have already done M15 and Stephan’s 
Quintet so let’s look at what’s left.  We’ll start with on of the last entries 
in the NGC and that is NGC7839 listed as a double star.  The question, not 
answered in the NGC, is magnitudes, separations and position angles.  The hope 
here is that more than just Richard Harshaw will give us an answer.  The 
description is very faint, resolved.  The next entry is the first entry in the 
NGC, NGC 1.  It is a small galaxy with a little elongation and is between an 
11th mag and 14th mag star.  Moving on, to the western part of the 
constellation is NGC7084 an open cluster of about 20’ that doesn’t have a very 
clear description so please supply one.  Next is an asterism named Stephan’s 
Test, is located at RA 22 37.0 dec 34 08 and reported as a jagged line.  How 
many stars do you count and what is the magnitude range?  It is 17” northeast 
of Stephan's Quintet and was used by Stephan to test transparency.  The last 
two entries are galaxies, the first being NGC7331 is barred, bright, large and 
elongated.  What other detail is there for you?  What about the middle, 
mottling and dark lanes?  This galaxy is on the 110 Best NGC and Herschel 400 
lists so there is something there for you.  Last is NGC7479 another barred 
spiral that shouldn’t be as large or as bright as the prior galaxy.  Yet can 
you see the central bar?  This one is also on the Herschel 400 list.


AJ Crayon
Phoenix, AZ
[sac-forum] Lest I Forget

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