Tag Archives: Sun

Mercury Transit

Today Mercury crossed between the Earth and the Sun. These Mercurial transits occur roughly 13-14 times a century – the last one was in 2006 and though we only have to wait until November 2019 to see the next one, the following transit won’t happen until 2032.

Between clouds and trees in my Eastern sky this morning I wasn’t sure I would be able to catch the beginning of the transit but it worked out. I set up my 80mm refractor with a Baader solar film filter for white light viewing. With this telescope an 8-24mm zoom eyepiece gives me 20-60x, which is just about right for solar viewing as the high end of the range still allows the entire disk to fit within the field of view and daytime seeing conditions don’t often allow very high powers.

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