Summer dark sky observing means short nights, and it’s usually too hot for comfort in the Colorado desert location we love. But Mojo and I decided [...]
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Summer dark sky observing means short nights, and it’s usually too hot for comfort in the Colorado desert location we love. But Mojo and I decided [...]
Galileo’s drawing of the third quarter moon was made on December 18, 1609 according to widely accepted dates calculated by lunar scientist Ewen Whitaker. He used the solar colongitude and [...] The moon rises later each evening now. That means a late night for sketchers. Luckily my small 70mm Televue Ranger on a telepod mount requires no setup. I keep it permanently set up in the garage. The features I’ve sketched on the 18-day moon begin with sunset on Mare Crisium – on the terminator [...] Galileo made the first recorded observation of Neptune in 1612 when Neptune [...] The full moon rises as the sun sets on the 14th day of the lunar month. A small telescope, such as the 70mm f.8.7 Televue Ranger I’m using for this series of sketches is a perfect instrument for full moon viewing. So are binoculars. The moon is [...] It’s showtime! Sunlight reveals most of the lunar surface and the moon is visible all night long. Sinus Iridum — the Bay of Rainbows — is visible near the north part (left in my sketch) of the terminator. It’s the little half circle. The Jura Mountains ring the western edge and catch the [...] Galileo looked at the fuzzy patch surrounding the head of Orion through a telescope, and resolved many starts not previously known. He called it Nebulosa Orionis. Look between the shoulder stars Betelgeuse and [...] Galileo published his observations in Sidereus Nuncius in March 1610: “On the 7th day of January in the present year, 1610, in the first hour of the following night, when I was viewing the constellations of the heavons through a telescope, the planet Jupiter [...]
Night owls can enjoy the nine-day moon – it’s up all night long. In my sketch, the magnificent crater Copernicus is visible on the sunlit side of the terminator – on the right side of the lunar center. It looks so insignificant right now, but [...] |
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