Other Observations/Images

NCKAS 2011 – This is our online logging of observing sessions throughout the year. I wanted to start keeping a better and easier log of all the observing we do.

12-15-2011: Hunting in Cassiopeia. We used Sue French’s DSW Dec. 2009 article from Sky and Telescope to hunt these faint targets down.  Many of them are somewhat hard to discern because of the enormous number of background stars all over Cassiopeia. It’s such a wonderful experience to sweep a large dob through though. Pretty much any view is breath-taking. The night was exceptionaly crisp and clear with a very steady atmosphere. Click on each DSS image for a larger version.


vdB 1 – Reflection Nebula in Cassiopeia
(Image Source STScI Digitized Sky Survey)

vB 1

Description: Bright Nebula in Cassiopeia
Visual Magnitude: unknown
Apparent Size: 9.0 arcmin
Distance: 610 pc, 2000 ly
R.A. (2012.0): 00h 11m 39.44s
Dec. (2012.0): +58° 50′ 05.8″
Diameter: 1.6 pc, 5.2 ly

This is a smal triangle of blue stars in the same field of view with a low power magnification of Caph, (β Cass), Using a 16″ reflector at 130X, a faint “fog” halo is seen around each of the stars in this little blue triangle. The emission nebula to the upper left was not viewed.


IC 10 – Local Group Galaxy in Cassiopeia
(Image Source STScI Digitized Sky Survey)

IC 10

Description: Irregular Galaxy in Cassiopeia
Visual Magnitude: +10.35
Apparent Size: 6.6 / 5.9 arcmin
Distance: 660 kpc, 2.2 mly
R.A. (2012.0): 00h 21m 03.71s
Dec.: (2012.0): +59° 21′ 39.9″
Color Index: +1.42
Morphology: IB, irregular
Radial Velocity: -345.0 km/sec.
Absolute Mag.: -13.75 visual
Diameter: 1.3 kpc, 4.1 kly

This very faint galaxy is essentially just a background brightening viewed with a 16″ reflector at 52X. It’s quite large with little resolution at all and is easily missed if you are not looking for it. One of those targets you almost have to convince you are viewing.


WZ Cass. /Stein 1248
(Image Source STScI Digitized Sky Survey)

WZ Cass.

Description: Variable Double Star in Cassiopeia
Visual Magnitude: +7.13 and -8.24
Separation: 58.1° at 89.0° 45700 AU
Distance: 790 pc, 2600 ly
R. A. (2012.0): 00h 01m 54.18s
Dec. (2012.0): +60º 25′ 25.2″
Variable Type: SRB, pulsating, semi-regular
Magnitude Range: +9.39 to +11.40
Period: 186.00 days

This is a gorgeous orange-red Carbon Star in Cassiopiea. The compainion, a chance alignment star and not a true binary system, is a wonderful blue contrast to the striking color of WZ Cass. At ~7 Mag., this Carbon Variable is within the grasp of most any telescope. The closer double at the top upper right, around 2 o’clock, is the small binary system Stein 1248. The both looked yellow to me with the brighter one perhaps having a slight orange hue. We view all these with a 16″ reflector at 130X.


 Berkeley 1 – Open Cluster in Cassiopeia
(Image Source STScI Digitized Sky Survey)

Berk 1

Description: Open Cluster in Cassiopeia
Visual Magnitude: unknown
Apparent Size: 5.0 arcmin
R.A. (2012.0): 00h 10m 15.39s
Dec. (2012.0): +60° 32′ 05.9″
This open cluster is pretty hard to discern against the background of stars. In fact, with the exception of “loops” or “U”s of star chains, I would be hard pressed to pick this out. Used a 16” reflector at 52X.


 King 13 – Open Cluster in Cassiopeia
(Image Source STScI Digitized Sky Survey)

King 13

Description: Open Cluster in Cassiopeia
Visual Magnitude: unknown
Apparent Size: 5.0 arcmin
R.A. (2012.0): 00h 10m 45.50s
Dec. (2012.0): +61° 14′ 05.8″
Diameter: 4.5 pc, 14.7 ly

This open cluster is a very interesting object. It looks like a sprinkling of diamond dust inside a fat square parallelagram. Used the 16″ reflector at 52X.


King 1 – Open Cluster in Cassiopeia
(Image Source STScI Digitized Sky Survey)

King 1

Description: Open Cluster in Cassiopeia
Visual Magnitude: unknown
Apparent Size: 24.0 arcmin
Distance: 1.1 kpc, 3.5 kly
Diameter: 7.5 pc, 24.6 ly

This open cluster is very large and diffuse but more easily discerned from the background of stars. They stand out a bit more than some of the rest of the clusters here. Although the overall appearance is a delicate sprinkle of diamonds. Again the 16″ dob at 52X.


Sharpless 2-175 Emission Nebula in Cassiopeia
(Image Source STScI Digitized Sky Survey)

SH 2-175

Description: Bright Emission Nebula in Cassiopeia
Visual Magnitude: unknown
Apparent Size: 1.0 x 1.0 arcmin
R.A. (2012.0): 00h 27m 31.50s
Dec. (2012.0): +64° 40′ 40.2″

 

We could not bag this one. It shouldn’t too hard though and I think we were looking for a much larger object.


NGC 281 – PacMan Nebula – Emission Nebula in Cassiopeia

NGC 281

Description: Bright Nebula in Cassiopeia
Visual Magnitude: 7.40
Apparent Size: 35.0 x 30.0 arcmin
R.A. (2012.0): 00h 53m 32.14s
Dec. (2012.0): +56° 40′ 00.7″
Distance: 4.1 light years

 

Imaged this with an ST-8300C through an Astro Tech 65EDQ APO @ f5.0. This is a stack of 10 5 minute guided One-Shot-Color images from my driveway. Loads of light pollution. Captured with Nebulosity and processed in MaximDL, Nebulosity and Gimp.