Saturday, July 1, 2017

Observing log for 30 June 2017

The towering cumulus clouds stayed southwest of Rockville and the sky cleared! Seeing wasn't great, but we did manage to observe the following objects:

Overall, not a bad night. Thank you everyone for your patience with the weather and the fantastic questions. It's an honor to get to share the observatory and night sky with you.

Saturday, June 3, 2017

June / July Starmap

The starmap for June and July is here: MCAO June / July Starmap.

I create these maps using the wonderful http://www.heavens-above.com/ website and Stellarium software. (Stellarium is a free planetarium software program. If you'd like to know what's up in the sky, I highly recommend it!)

Observing Log for 2 June 2017

Skies were clear and beautiful last night! We observed the following objects:

  • Jupiter (planet) : Jupiter was easy to find between the Moon and the bright star Spica. It will be even closer to the Moon tonight (Saturday 3 June). We were able to make out cloud bands on the planet and the four Galilean satellites- Io, Europa, Ganymede, and Callisto.
  • M13, (the Hercules cluster): We also looked at the globular cluster, M13. M13 can be found in the constellation of Hercules and is about 25,000 light-years from Earth.
  • M57 (the Ring Nebula): Next up was M57, a planetary nebula. M57 can be found in the constellation of Lyra and is located about 2,300 light-years from Earth. Planetary nebulae are the remnants of lower mass stars after they've used up their nuclear fuel. The Ring Nebula is a particularly beautiful example.
  • M3 (globular cluster) : We also looked at a second globular cluster, M3. This cluster can be found in the constellation Canes Venatici (the hunting dogs), and is about 33,900 light-years from Earth.
  • Mizar (double star) : With the smaller telescope, we split the double star Mizar in the constellation Ursa Major.
  • ε Lyrae (double star) : We also looked at the "double double" star in the constellation Lyra.
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Thank you everyone for attending the event last night, and for your interest in the Montgomery College Observatory.