We'll be out a little later tonight. Sunset isn't until 8 p.m. so that's
when we'll start observing at our usual Myrtle and Lime corner in
Monrovia CA. The moon is a few days from first quarter, so will appear
as a chonky crescent tonight. We've just about lost views of Mars this
apparition, you might glimpse it near the western horizon with unaided
eye after sunset, but it will be too low to aim a telescope at from our
corner.
Jupiter is beginning its months-long reign as King of the planets in the
night sky sky this month. Despite all the hype about Jupiter's
brightness and closest approach (opposition) to the Earth in its orbit
this week, this isn't the easiest time to view the planet early in the
evening. Just like the full moon phase, Jupiter Opposition means Jupiter
is "opposite" the sun, rising sunset *opposite* the sun and setting near
sunrise. At 8 p.m. sunset tonight, Jupiter will only be a few degrees
above the eastern horizon. It may clear the trees in Monrovia by 10 p.m.
tonight but will be best to see around midnight for the next few weeks,
when it reaches its highest altitude, which is only 30 degrees above the
horizon. Each week it will reach this highest point a half hour earlier,
so July and August will be prime viewing months.
So tonight's view, when Jupiter will be lower in the sky won't provide
awesome views. For awesomness, set your alarm, step outside between
midnight and dawn over the next few months. With some moderate-sized
binoculars and a steady view (use a fence or post to steady/balance the
binos) aim at Jupiter and you should be able to see the Galilean moons!
Hope to see some of you tonight! Jane
Jane Houston
Joneshttp://www.otastro.org/ <http://www.otastro.org/>