Greetings, fellow Skywatchers! It’s Friiiiday! Are you ready for the weekend? Sure, it’s going to be a rather moony affair, but that doesn’t mean we can’t enjoy. Why not take the time to hunt down Neptune, or check out a cool crater like Letronne? We can always shoot for a binary star – or two – or just enjoy the solitary pleasures of being alone with Formalhaut. If you’re up to it, we’ll chase the rays from crater Bessel and try our luck with a new variable star. Don’t spend the last few good nights of the year inside hiding… Let’s rock the night together.
Also known as 34 Capricorni, Zeta is a unique binary system. Located about 398 light-years from Earth, the primary star is a yellow supergiant with some very unusual properties – it’s the warmest, most luminous barium star known. But that’s not all, because the B component is a white dwarf almost identical in size to our own Sun!
Sunday, October 12, 2008 – Today in 1891, the Astronomical Society of France was established. Exactly one year later in 1892, astronomy great E. E. Barnard was hard at work using the new tool of photography and became the first to discover a comet – 1892 V – in this way! But Barnard’s main photographic interest was in capturing details of the Milky Way. Just as soon as skies are dark again, we’ll have a look at more of Barnard’s work.
With tonight’s bright skies, it will be difficult to practice any astronomy – or will it? Try re-locating Fomalhaut and drop about a handspan south-southwest into Grus to pick up bright star Beta (RA 22 42 40 Dec -46 53 04).
In the telescope, you will see Beta also has a visual companion to the south. Although it is unrelated to Beta itself, modern interferometry suggests there may be a true companion star which has yet to be resolved. No matter how you view it, you’ll like Beta for its rich color! Remember its position…
Unitl next weekend and darker skies, have a wonderful journey!
This week’s awesome images are: Apollo 16 image of Letronne – Credit: NASA, Zeta Capricorni – Credit: Palomar Observatory, courtesy of Caltech, Schickard region – Credit: Oliver Pettenpaul, Fomalhaut – Credit: Palomar Observatory, courtesy of Caltech, Bessel Rays – Credit: David Richards and Beta Gruis – Credit: Palomar Observatory, courtesy of Caltech. Thank you so much! Seeing these photographs contributes so much to our understanding of both history and what we’re seeing!
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