Observations of object "M73"

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Observations of object "M73":

M73 (Open Cluster, in Aquarius)
Observer: Michael Amato (e-mail: abigmick@aol.com)
Instrument: 5.1-inch equatorial reflector   Location: West Haven, Connecticut, United States
Light pollution: moderate   Transparency: fair   Seeing: fair
Time: Thu Oct 7 01:25:00 2021 UT   Obs. no.: 2302

This evening, I observed two open clusters with my Newtonian Short Tube Reflector. M73 has a few bright stars in it & is really only a loos group of stars & not a true open cluster. The stars are fairly bright though. I also observed M45, The Pleaides Open Cluster. The bright star Merope had some nebulosity around it when I upped the power in my scope. There was one other bright star that also had some nebulosity.

Last evening, when I observed Aquarius through my low power telescope, I came upon the sparse open cluster M73. There where a few stars in it including four bright stars but there is evidence M73 is just an asterism. Also, I observed the two bright yellow Alpha & Beta stars of Aquarius. They used to be big blue stars but now they are transitioning to red stars.

M73 (Open Cluster, in Aquarius)
Observer: Michael Amato (e-mail: abigmick@aol.com)
Instrument: 16-inch Dobsonian reflector   Location: Milford, Connecticut, United States
Light pollution: moderate   Transparency: fair   Seeing: fair
Time: Sat Aug 9 01:30:00 2008 UT   Obs. no.: 1796

This evening my friends Steve Borer, Rob Masud and I attended a local star party given by our local astro group the Astronomical Society of New Haven. One of the first things we viewed was Jupiter with Greg's 16" Dob. The south equitorial belt surprised all of us with its reddish appearance. I've never seen the SEB look so red. The north equitorial belt was very lumpy looking because of the festoons on it. Some of the deep space objects we observed included two galaxies M51 and M31. All we could see was the cores of these galaxies becausen the skies were not good for galaxy viewing. However, M11 The Wild Duck Cluster and M57 The Ring Nebula were truly outstanding. We also viewed four globular clusters, M4, M13, M22 and M73. Every time I observe M4 I have to wonder whether it's a globular or open cluster. To me it looks more like an open cluster. M13 and M22 both showed many individual stars through the 16" dob. But my favorite globular turned out to be M73. This globular was so densely packed, seeing individual stars was next to impossible. However, the big highlight of the evening was the bright X that was on the terminator of the first quarter moon. The X on the moon is the result of the tops of certain crater rims being exposed by the sun. This results in a perfect X which appears during a first quarter moon. Finally we were able to see satallites and the Persiad Meteor Shower in the sky above us. Lightning flashes in the distant horizon comleted our very enjoyable evening.

M73 (Open Cluster, in Aquarius)
Observer: Emil Neata (e-mail: forvert2000@yahoo.com, web: http://www.nightskyinfo.com)
Instrument: 4.5-inch Dobsonian reflector   Location: No location given
Light pollution: light   Transparency: good   Seeing: good
Time: Mon Oct 10 23:00:00 2005 UT   Obs. no.: 1362

M 73 is an asterism composed of four stars, difficult to see at 53x. The stars are grouped in the form of a trapezium. Even at 120x the asterism is difficult to split into component stars. The three brighter stars (magnitude 11) are somehow easier to see, but the forth (magnitude 12) is difficult, even when using averted vision.

M73 (Open Cluster, in Aquarius)
Observer: Akarsh Simha (e-mail: akarsh_simha@fastmail.fm)
Instrument: 8-inch equatorial reflector   Location: Bangalore, Karnataka, India
Light pollution: moderate   Transparency: good   Seeing: good
Time: Wed Sep 21 16:15:00 2005 UT   Obs. no.: 1335

Nice. I could not resolve the stars at 100x and I did not bother to go any further in power. Looks like a hazy thing.

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