Assorted Public Events + Night Sky at UACNJ Observatory

Once again I have been remiss about posting after (forget about before!) events. Since my last post I have done a number of public observing events, most targeted at Jupiter and the Moon, and last night visited the UACNJ Observatory at Jenny Jump State Forest. This post will cover last night's observing. I decided on heading out to the observatory last night because the timing worked. Astronomers hate a lot of things, like the atmosphere and light pollution, but one of the less-than-obvious sources of light - particularly at dark sites - is the Moon. (If you are at a ridiculously dark site, some people will get fed up with Venus and Jupiter, but that's pushing it!) Anyway, most astronomers find that moonlit nights are pretty much only good for observing the Moon and planets, but for a guy like me from New York City, a moonlit night in the middle of nowhere is still a dark-sky adventure. So here's the deal. After a brief stop at home after work, I packed the car with some observing equipment (eyepieces, maps, etc. - left the telescope at home) and food, and sped off to Jenny Jump. The drive was pretty quick and for the first half hour, I was treated to a gorgeous purple sunset. Fast forwarding, I got to the observatory, dropped my stuff at the house, rolled off the observatory roof (this was tough by myself!), and opened up the 16" Newtonian to give it some time to cool off. During that time, I reviewed the Summer night sky and had some dinner. Here are yesterday's observing targets:

• Deneb: I forgot how enjoyable it can be to observe a ridiculously bright star! Dened is one of the greatest known supergiants and is the brightest star in the constellation Cygnus.
• M31 - The Andromeda Galaxy: Bright core visible, couldn't see M32
• M110 - Satellite galaxy of M31, member of the local group. Visible as a fuzzy patch above M31.
• M13 - The greatest globular cluster in the night sky! Through the 16" this resolved ridiculously well straight to the core. Wild "wow" factor.
• Double Cluster in Perseus
• Mizar (A&B) and Alcor - A nice visual and binary double in Ursa Major
• Albireo - WHOAH. First time observing this beautiful double star. Particular when looking at the diffraction rings, but also at prime focus, these two stars have sharply contrasting colors of orange and blue-green.
• M57 - Ring nebula. Never fails to impress me. Even with the bright moonlight, this was a great sight and resolved easily. Could not see 15th mag central star.
• M27 - First time observing the Dumbbell Nebula. This is a large planetary nebula with a twin-lobed shape. Quite spectacular.
• [Jumped around to a bunch of objects in Cass.]
• Moon - really crisp, clear, bright shots through the 16". Required use of variable polarizing filter to reduce brightness.
• Jupiter - first time observing the planet through such a large scope, the exponential increase in detail is breathtaking. Looked like a photograph..

Fun time!

7/24 - EVERYTHING!

The absolute best night of observing I have ever had. I began by trying to locate M57, the Ring Nebula in Lyra, which shouldn’t be difficult but gave me a hell of a hard time and I eventually gave up on it. I also spent way too long trying for M27, the Dumbbell Nebula in constellation Vupecula, another object I should have easily found (update: my chart wasn’t terrible accurate – ha!). So it seemed as though the night was off to a poor start… Anyway, Jupiter proved a beautiful target, with brief periods of clarity just barely allowing 320x magnification. The seeing didn’t prove good enough to allow for clear identification of the recent impact scar, although I’d give myself 40% odds that I saw it – just without enough time to really be sure. Spending a significant amount of time at the eyepiece looking at one object only really enabled me to tease out a lot of detail from Jupiter, a very worthwhile experience.

Ok, so next steps were getting a better handle on the Summer constellations, which didn’t take too long. As for objects, M13 was ridiculously uncooperative (I really just don’t have enough experience finding it and can’t see the Hercules keystone naked-eye), but things then started to really take off! First I was mesmerized by Capella and its apparent resolution as a small disc in the eyepiece. May have been just an illusion from the double star, but still was a cool sight. Next I made my way over to Andromeda and found the famous M31 Andromeda Galaxy. While I was there, I scoped out M32, a close neighbor to M31. M110 wasn’t happening, nor was M74. I shouldn’t have expected to see those two, however, as they are pretty much invisible from NYC. I next spent some successful time in Cassiopeia! M103 popped out quickly, as did NGC457, but the absolute highlight in nearby Perseus is the Double Cluster NGC 869 & 994. This is stunning in a wide-field eyepiece. M34 was also a pretty quick find, although it was just as quickly moved on from as it isn’t too visually interesting. Next stops were NGC7789, a pretty and rich open cluster in Cassiopeia, and M52, a similarly rich Milky Way cluster in Cassiopeia. Before wrapping up, I spent another few minutes on Jupiter and then scanned the sky for rising planets (Mars) and to refresh my memory on the constellations I had learned in the evening. So I look over at Vega, and what do I see? – Clear as day, Sulafat and Sheliak. I guess my limiting visual magnitude for the night – at its best – was about 3.5. Ugh, New York! Next steps from there were obvious, and I jumped right at the opportunity to find M57, which took only a minute or so. I think what had partially tripped me up earlier was M57’s small size in the finder, which I had totally forgotten. Anyway, some fun observing of this amazing plantary nebula / cheerio, and I was packing up to head downstairs.

To recap:

• Jupiter, no impact scar
• M31
• M32
• M103
• NGC 457
• Double Cluster (NGC 869 & NGC 994)
• M34
• NGC 7789
• M52
• M57

SOLID NIGHT! Ten objects, nine of which were new! (I had previously found and viewed M57.)å