STARLOG

GIRAFFES AND DOGS AND SHIPS, OH MY!

JANUARY 29, 2017

Observer: Tom Campbell
Location: College Station, Texas (Long: 101°56'W Lat: 33°47'N)
Telescope: Zhumell 12" f/5 Dobsonian
Eyepieces: Explore Scientific 18mm (83x)
Explore Scientific 11mm (136x)
Lenses: Celestron Luminos Barlow (2.5x)
Weather: The sky was mostly clear. Temperature was in the mid 50s (F), with a slight breeze.

OBSERVING SUMMARY:
CAMELOPARDALIS: SHJ 86, Σ1127, NGC 2403
CANIS MAJOR: h3945, CR 140, NGC 2359, NGC 2362, NGC 2367, NGC 2374
PUPPIS: M46, M47, M93, NGC 2438
URSA MAJOR: M81, M82

Today was clear and sunny, but there was a persistent cool breeze. I went ouside in the early afternoon to try to image the Sun, but the wind hampered my efforts. Finally, after sunset, the breeze began to die down a bit. I went outside again to check the sky.

I didn't have an observing plan tonight, but when I saw how gorgeous the sky was, I had to go observe. I've had a particular galaxy in Camelopardalis on my observing list for quite a while, but have never taken the time to try to observe it. It is known as NGC 2403 and I decided to start with it first.

SHJ 86 Camelopardalis Double Star 8:20pm CST

While starhopping to NGC 2403, I came across this double star system. It is a wide double, easily separated at 83X. There is maybe a 1 magnitude difference between the two stars. The primary is white and the companion is yellow-white.

 
Σ1127 Camelopardalis Double Star 8:25pm CST

This looks like a pair of eyes staring back at me. Both stars are the same magnitude and white. At 83X, they appear close together.

 
NGC 2403 Camelopardalis Spiral Galaxy 9:15pm CST

This is a large, face-on galaxy, and was very faint. I could perhaps detect a slight brightening of the background in a few places, but if I didn't already know something was there, I would pass right over it.

 
M 81 (Bode's Galaxy) Ursa Major Spiral Galaxy 9:35pm CST

At 208X, it shows a bright, elongated core. You can see some nebulosity surrounding it quite a ways in all directions, although you can't really see a definite shape. At 341X, It took up most of the field of view and with averted vision, parts of one of the spiral arms could just barely be seen. It feels refreshing to see a galaxy again.

 
M 82 (Cigar Galaxy) Ursa Major Irregular Galaxy 9:40pm CST

At 208X, this galaxy appears long and narrow, with rough edges. Using averted vison, some dark lanes could be detected here and there along one of the long edges. The core is almost stellar, but a bit elongated. At 341X, the galaxy fills up the entire field and the dark lane is more obvious.

 
M 47 Puppis Open Cluster 9:55pm CST

This is a nice open cluster, with a lot of bright stars and a lot of fainter stars as well. It's spread out in an irregular shape, but fills the view at 83X. There's one nice double near the center of the cluster that's tight and both components are the same magnitude - another pair of eyes looking back at me in the dark. All the stars appear to be white.

 
M 46 Puppis Open Cluster 10:00pm CST

This cluster is a lot fainter than nearby M47, but it's more impressive. It is more compact and appears like a pinwheel. At one edge of the cluster at 83X, I could detect the faint puff of planetary nebula NGC 2438. At 136X, the cluster fills the field of view and the nebula becomes even more obvious, taking on a nearly circular appearance, with the outer edges a bit brighter than the middle.

 
NGC 2359 (Thor's Helmet) Canis Major Bright Nebula 10:20pm CST

I needed an O-III filter to detect this one. It is large, but somewhat faint at 136X. I could detect the half-circle shape of the helmet along with one "horn" coming off of one side.

 
NGC 2374 Canis Major Open Cluster 10:30pm CST

The best view of this cluster is at 136X. There are several brighter stars in the shape of a hand-drawn 5-pointed star in the field. In one corner of that is a knot of much fainter stars, tightly packed. This is NGC 2374. It is somewhat oval in appearance, with perhaps 15-20 members visible.

 
CR 140 Canis Major Open Cluster 10:40pm CST

This cluster is very loose and scattered. It has been nicknamed the Tuft in the Tail of the Dog due to its location near the tail of Canis Major. It contains several bright stars in a very elongated shape. Near the middle of it is a fainter triangle of stars, one of which is an orange carbon star. Near it is a bright, lemon yellow star.

 
NGC 2362 (τ CMa Cluster) Canis Major Open Cluster 10:45pm CST

I've seen this cluster before, but it is worth seeing again. It is a small cluster containing mostly faint stars, but has bright τ CMa right in its center, making it gorgeous. The best view was at 136X, where it revealed a couple of faint stars right next to Tau. Perhaps 30 members could be seen in all. It isn't quite round, but more triangular in shape.

 
h3945 (Winter Albireo) Canis Major Double Star 10:50pm CST

This pair of stars has one orange and one blue member. The orange star is slightly brighter. They are nicely separated, making for a pleasing view. I have to give this double a look every time I'm in the neighborhood.

 
M 93 Puppis Open Cluster 10:55pm CST

This cluster is rich, but somewhat faint. In my finder scope, it shows up as a faint patch of fuzz. At 83X, it pops out with dozens of stars. It's difficult to tell where the cluster ends and the Milky Way begins, but it is nevertheless impressive. A few of the stars were yellow, but most were white.

 
NGC 2367 Canis Major Open Cluster 11:05pm CST

This is a small cluster, not very impressive. It is shaped like a narrow triangle, similar to a mouse pointer or a Christmas tree. At 136X, the brightest member resolves to a double, with both stars being the same magnitude. The brightest stars are along the edges, with about a dozen stars in all.

 

I wanted to stay out longer - Leo was rising above the rooftops and Jupiter wouldn't be far behind. But alas, I had to work in the morning, so decided to pack things up. I had a lot of fun tonight and hope the skies give me another chance tomorrow night before the Moon becomes too bright.