December 16, 2014 – What is “light-polluted astronomy”? What’s with that hyphen? And Europa’s shadow!!!

Before I get to the main topic, let me just do a quick recap of my observing session last night.  I went out to take another look at Jupiter, to see both the Great Red Spot, and a transit of Europa.  According to this listing from Sky & Telescope, the Great Red Spot was supposed to be […]

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December 14, 2014 – Upgrading the Mak, Part 3A – 8mm TeleVue Plossl vs. 9.7mm Meade 4000 SuperPlossl, Bahtinov mask, Lord mask, diagonals

As promised, I can finally give you the lowdown on how good the TeleVue Plossl is. It ain’t worth it. I observed Jupiter tonight, for almost a solid hour, with a couple of breaks for the Geminid meteor shower.  (I only saw one, out of the corner of my eye.)  I switched back and forth […]

Read more "December 14, 2014 – Upgrading the Mak, Part 3A – 8mm TeleVue Plossl vs. 9.7mm Meade 4000 SuperPlossl, Bahtinov mask, Lord mask, diagonals"