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11/26/2009

November 18 2009 Observing Session

Edit: I was working on two posts at once and the way blogger works I am not able to load the 25 and 26 session before the 18th. Last night's session is below this one so you know.

Well, I was able to get out yet again and do some galaxy hunting but on this session I forgot my digital recorder so no digital recording on this one. I'll get the rest of those up this weekend for the other posts.



NGC 613 is a Galaxy in the constellation Schulptor.
RA 01 h 34.3 Dec. 29 25 m.
Listed Magnitude 10.0 Listed Size 5.3' x 2.6'
XT10
13mm & 21mm Stratus
Seeing 6-7/10 Transparency 3/5



















This was a difficult object because the galaxy sits so low and the observer at my latitude is looking through a lot of atmosphere to view it. At 57x the core is somewhat detectable with averted vision, but it comes and goes, and it is surrounded with a whisper of a halo around it. At 92x the core takes on what I call an elliptical shape with the core being brighter in the S.W. and the N.E. Edge is diffused and no modding or other details are evident.

I tried to capture the faintness of the galaxy but also to show how it looked in the 13mm Stratus. I could define the shape basically and the core I saw here and there, but not enough to include in the sketch.


NGC 246 Planetary Nebula called The Skull
Constellation: Cetus
R.A. 00 h 47 m Dec. -11 d 52 m
Listed Magnitude: 10.9
Listed Size 4.6' x 4.1'
XT10 21mm&13mm Stratus, 5mm Hyperion
Orion Ultrablock Narrowband Filter























O'Meara's directions are spot on but with the conditions I was in this was a very hard object to locate at first. Very faint and then it came out as I used averted vision even with the filter. 92x shows the two crescents that I have tried to capture in the digital sketch. 240x showed the western portion of the nebula is much brighter than the rest. A challenging but fun object.

This is a case where I like the sketch did at the eyepiece so much more than my digital recreation based on that sketch. Someday I'll be able to afford a scanner that will allow me to really do a good deal with scanning and posting a good realistic version of my sketches. This sketch captures the two crescents without their slight break at the top. The 12th magnitude star is visible in this PN.


NGC 157 Mixed Spiral Galaxy
Constellation: Cetus
R.A. 00 h 34.8 m Dec. -08 d 24 m
Listed Magnitude 10.4 Listed Size 4.0' x 2.4'
Seeing 7/10
Transparency 3/5
XT10
13mm & 21mm Stratus























This spiral galaxy is in the middle of two ninth magnitude stars. It requires averted vision to see but is still a very faint object doing that. 92x showed the better view with more of a halo evident with diffused edges and with some spiral stucture evident. No other details are evident to me. Would be a fun one to come back from a true black site and observe.

I tried to show a slightly brighter core than the halo for I observed that and the hint of arms. These arms stick out too much for me but they kinda of give the impression I'm looking for so I left them. Looks like a swimmer to me.





NGC 596 Mixed Spiral Galaxy
Constellation Cetus
R.A. 01 h 32.9 Dec -07 d 02 m
Seeing 7/10
Transparency 3/5
XT10
13mm & 21mm Stratus























Theta Ceti is the starting point for this object and then follow O'Meara's directions and his small finder map. At 92x the core is bright and round and brighter than the diffused halo around it. Slightly tilted NE to SW averted vision is a must to view this object.

The sketch is done to show what averted vision can show you. Without it this object is a very faint and very easy to pass over if your not looking correctly or in the right spot.


NGC 584 Lenticular Galaxy
NGC 596 Galaxy
Constellation: Cetus
RA 01 h 31.3 m Dec -06 d 52 m
Seeing 7/10
Transparency 3/5
XT10
13mm & 21mm Stratus
























NGC 584 is avery small and faint galaxy, that requires yet again averted vision to see. I actually passed over it before bagging it. At 92x the core became visible and is of the same brightness of the halo on outer edge.

My sketch reflects seeing NGC 584 which is the more rounded galaxy on top with NGC 586 which is more edge on and the bottom galaxy. Both really do take averted vision to see and some patience. Keep your viewing eye dark adapted and be at a dark site.


NGC 615 Edge On Barred Spiral Galaxy
Constellation: Cetus
R.A. 01 h 35.1 m Dec. -07 d 20 m
Listed Magnitude: 11.6
Listed Size 2.5'x 1.3'
Seeing 7/10
Transparency 3/5
XT10
13mm & 21mm Stratus























This is a very small galaxy with a star like core at 57x. At 92x the core shape of the galaxy elongates. Diffused halo around the core is longer then the core as viewed with averted vision. Not a spectacular sight, faint, but viewable because of its small and condense.

Sketch tries to reflect the diffculty of seeing this object. I know if I tilt my monitor back and forth the object gains in brightness and fades and that's a good way to view this object.

That's all from this session. These are some very fun but challenging objects.

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