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June 30 Conjunction of Jupiter and Venus

29 Jun 2015, 07:01 UTC
June 30 Conjunction of Jupiter and Venus
(200 words excerpt, click title or image to see full post)

Date: June 30, 2015 (tomorrow!)
Time: 7:30 pm (right after sunset and about two hours beyond)
Place: the western sky
There will be a very close conjunction of Jupiter and Venus tomorrow night. They’ve been quite close for a couple weeks, as you may have noticed. The sky chart above, rendered by Cartes du Ciel (my planetarium app) actually shows the dots for Jupiter and Venus overlapping, but they separate when I zoom in. To your eyes, they will not appear to overlap, but seeing the two brightest planets so close to each other will be well worth a trip outside.
Closest approach will be 0.3° (about two-thirds the diameter of the Full Moon). With my 5″ Takahashi refractor, and its 1040 mm focal length, my 9 mm Nagler eyepiece will provide a TFOV (true field of view) of 0.71° at a magnification of 116X. The visual appearance should be close to what is shown in the thumbnail below. Click to enlarge.

The view in that thumbnail is also a simulation by Cartes du Ciel. It accurately shows the positions of Jupiter’s moons, the 4 largest of which can be seen with binoculars. Only 3 of those ...

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