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Venus brightest around February 16 | EarthSky.org February 16, 2017

Posted by aquillam in Astronomy, MichiganAstro, Urban Observing.
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If it’s clear where you are this evening (or the next several evenings really), look high in the west about half an hour after sunset. That incredibly bright point of light you see is not a star, it’s Venus! If you happen to have a small telescope or good pair of binoculars, take a look at it. You’ll see it’s actually a crescent!

As long as you’ve got your telescope/binoculars out, be sure to check out the little red point nearby. That’s Mars. In fact, it’s pretty much a full Mars. How can two planets be so close in the sky and so different in appearance? Because one of them is nearby, almost between us and the Sun, while the other is far away, with the Sun in between.

For more on Venus, check out this story from Earth-Sky:

 

Venus is brighter around February 16-17, 2017 than at any other time during its ongoing, approximate, 9.6-month reign in the evening sky.

Source: Venus brightest around February 16 | EarthSky.org

Transit of Mercury May 9 2016 May 6, 2016

Posted by aquillam in Astronomy, MichiganAstro, Urban Observing.
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Phil Plait posted a very nice guide to the transit. It includes a long list of available webcasts, in case it’s cloudy or night where you are.

The highlights:

You’ll need magnification. DO NOT LOOK AT THE SUN WITHOUT APPROPRIATE FILTERS.

The transit runs 11:12 – 18:39 UT, or about 7:12 AM to 2:39 PM Ann Arbor time.

If you’re in SE Michigan, here’s a list of places you can go to observe the transit.

View all the naked eye planets at dawn January 20, 2016

Posted by aquillam in Astronomy, MichiganAstro, Urban Observing.
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The return of Mercury to the morning skies means all the naked eye planets are visible at dawn now. We have a couple weeks’ worth of great morning observing coming up, which might make you glad for late sunrises.

Start with January 24th. At 7 AM, Mercury, Venus, Saturn, Mars, Jupiter, and the Moon spread out across the entire sky.

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The sky at 7 AM on January 24

The 25th marks the day of least span. From Mercury to Jupiter will cover only 112º 3′ that day, or about 2/3 of the sky from southeast to southwest.

By the 28th, the planets will have spread out to 112º 40’ (not a noticeable change to most of us), but the Moon will be inside that span. It’ll be right next to bright Jupiter, so if you like taking pictures, it’s a good opportunity.

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The sky at 7 AM on January 28. Jupiter and the Moon make a good pair.

The Moon tends to overwhelm the other planets, but if you like conjunctions, look for the Moon and:  Spica on the 30th; Mars on February 1; Saturn on the 3rd; and Venus and Mercury on the 6th.

If your goal is a glimpse of illusive Mercury, take your binoculars out on February 4th, when Mercury is more than 5 1/2° above the southeast horizon at 7 AM. That’s about the same as holding 3 fingers at arm’s length, so a clear horizon is a must.  It’ll be up 10° by 7:30, but by then it will also be very bright out. 

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Mercury is farthest from the horizon at 7 AM on February 4th.

On February 6, head out with the binoculars again and use Venus to find Mercury and an old crescent Moon. 

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Bright Venus can guide you to an old Moon and Mercury on Feb. 6th.

Mercury, the fleet footed messenger, and Venus, goddess of love, will be at their closest on February 14, just in time for Valentine’s Day. May he speed your messages to the one you love.

 

The Moon Occults Aldebaran January 19, 2016

Posted by aquillam in Astronomy, MichiganAstro, Urban Observing.
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If it’s clear where you are this evening, head outside around 8:45 PM and look for the Moon. Nearby, you’ll spot Aldebaran, the bull’s eye. Keep watching! Aldebaran will disappear behind the Moon right around 9 PM! The dark side approaches first, so it can be a bit tricky to see it disappear.

The star will reappear around 10:20 – 10:30.

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Simulation of 8:45 PM in Ann Arbor