STARLOG

A DOUBLE DATE

FEBRUARY 10, 2016

Observer: Tom Campbell
Location: College Station, Texas (Long: 101°56'W Lat: 33°47'N)
Telescope: Zhumell 12" f/5 Dobsonian (Biggie Z)
Eyepieces: 1.25" - 15mm 82° Erfle (100X)
Lenses: Celestron Luminos 2.5x Barlow
Seeing: Stable (7/10)
Transparency: Clear
Weather: Mid 60s, with a slight breeze, turning colder and windier as the night progressed.

Observing Summary


Today was clear and warm. I came home from work excited, knowing the clear sky and nearly new Moon would be great for observing. I set up my telescope in my back yard and waited for darkness to fall.

When I went back outside, however, I was dismayed to see that nearly every neighbor of mine had either porch lights or security lights shining brightly. I lugged the Biggie Z to the darkest section of my yard, but knew that any hopes of viewing galaxies or nebulae were gone.

While I was deciding what I wanted to do, the song "That's Amore" came into my head and I began quietly singing some made-up lyrics:

Okay, enough of the bad lyrics - I had my plan. Not to be one to waste a clear night, I went back inside and printed out a Plan B observing list, consisting of double stars and planetary nebulae. Armed with this new list, I began my session in earnest.

17 CMa Canis Major Multiple Star 7:50pm CST

This is an interesting quadruple star. At 250X, it looks great, with a wide separation. The primary is a creamy white, forming a nice triangle with two fainter stars. The faintest member is blue-white, and the third member is slightly brighter and deep orange. The fourth white star is a larger distance away, making a crooked kite formation.

 
ν1 CMa Canis Major Double Star 7:55pm CST

This is a pretty double at 100X. It looks like a slightly paler version of Albireo. The primary is yellow-white, and its pale blue companion is about a magnitude fainter.

 
ShJ 49 Orion Double Star 8:10pm CST

This double is along the upper part of Orion's bow. It is a triple star in the shape of the constellation Aries. The middle star is the brightest. All three stars appear white, but the brightest member has a yellowish cast.

 
Σ627 Orion Double Star 8:15pm CST

This double system consists of two white stars of almost equal brightness, staring back at me like glowing eyes in the darkness.

 
IC 2165 Canis Major Planetary Nebula 9:10pm CST

I spent several minutes trying to track down this planetary nebula, but with no luck. I was using a large arc of stars in Lepus as a starting point for locating it, and knew I was in the right general area, but still couldn't seem to find it.

The wind was starting to get stronger, and it was turning cold, so I headed back inside for a short break to put on a heavier jacket and to print out some more detailed charts.

Starhopping again with the new charts, I was able to track down the right field stars. This planetary nebula is tiny. I had to bump it up to 250X to get it to appear non-stellar. Even at that magnification, no details were visible - it appeared as a round, fuzzy star. The wind was beginning to jiggle the telescope a bit, which wasn't helping.

 

The wind was showing no signs of getting better, and it was starting to cool off quite a bit. I decided to call it quits earlier than I had planned. Still, five new objects tonight in less than ideal conditions made for a successful evening.