Wednesday Night's Jovian Events
Posted 07 February 2013 - 12:07 AM
Here's the Sky & Telescope list of the Galilean satellite events for tonight:
00:20 UT, Europa enters occultation behind Jupiter.
02:50 UT, Europa exits occultation behind Jupiter.
02:52 UT, Europa enters eclipse by Jupiter's shadow.
05:28 UT, Europa exits eclipse by Jupiter's shadow.
05:42 UT, Io enters occultation behind Jupiter.
09:10 UT, Io exits eclipse by Jupiter's shadow.
The Great Red Spot transits Jupiter's central meridian at 06:05 UT.
00:00 UT equals 7:00 p.m. EST.
The event times at Centaur's site are a bit more accurate.
I've also observed quite a few deep-sky objects but the transparency isn't the best tonight and the skies at Naylor just aren't all that dark anymore.
Posted 07 February 2013 - 03:02 AM
Unfortunately, the seeing near the horizon was poor and I couldn't make out the Great Red Spot at the CM. Another problem was the fact that the dome shutter happened to be in a state of disrepair and I wasn't able to position it to view close to the horizon. The result was that the 17" was stopped down to a 6 or 7-inch semicircular aperture by the shutter while I was looking at Jupiter. The fact that the shutter wasn't working properly also prevented me from seeing a number of DSOs that I had planned on viewing.
Most of the deep-sky objects that I was able to see were galaxies, although there were also quite a few open clusters, some nebulae of various types, and a globular cluster, namely M3, in the mix, as well. The DSOs that I observed (at magnifications of 162, 185, 216, and/or 259x) included the Hyades (through the 5" f/5 finder scope), M3, M35, M36, M37, M38, M42, M43, M45 (through the 5"), M51, M63, M64, M65, M66, M95, M96, M97 (with and without an Orion UltraBlock narrowband filter), M105, M106, M108, NGC 1907, NGC 2158 (I could resolve a dozen or more stars at 259x, despite the less than ideal conditions), NGC 2244, NGC 2261 (one of my favorite winter objects), NGC 2264 (17" and the 5"), NGC 2392 (I had a fine view of the Eskimo Nebula), NGC 2371-2, NGC 2683 (one of the best galaxy views of the night), NGC 2903, NGC 3115, NGC 3628, NGC 4565, and NGC 5195. Some low clouds began to appear and I was a bit tired and cold so I finished the night with the fine binary star Epsilon Boötis (Izar or Pulcherrima) at 216x.
Posted 07 February 2013 - 09:07 AM
Posted 07 February 2013 - 02:34 PM