Clockwise from left (all crops except for comet): twin clusters of blue-white diamonds, with a smattering of glowing red-rubies, punctuate the black velvet background of the Double-Cluster ─ taken with Tele Vue-60is (R. Reeves). The ruby-red glow of ionized hydrogen gas backstops a dark, cold, horse-head-shaped concentration of gas to form the Horsehead nebula ─ taken with a Tele Vue Paracorr Type-2 and 10in, f/4 Newtonian (L. Marinelli). A pearl-pod of Baily Beads glisten on the lunar rim during the 2019 solar eclipse ─ taken through Tele Vue-76 with Tele Vue Powermate (W. Sukwanto). Emerald-green glow of ionized cyanogen and diatomic carbon from comet Lovejoy (C2014 Q2) taken through a Tele Vue-85 (M. Broussard).
For the amateur astronomer, “diamond,” “ruby,” “emerald,” and “pearl” evoke poetic descriptions of eclipses, stars, clusters, comets, and nebulae. They are also the traditional gemstones for the anniversary years of 10 (diamond), 15 & 40 (both ruby), 20 (emerald), and 30 (pearl). With over 40-years of experience designing and building astronomical products —many in production for decades — we have a few “gems” of our own celebrating notable anniversaries this year. In this blog post, we take a look at current production products that are celebrating anniversaries. Among these products are five Sky & Telescope “Hot Product” awardees (those awards only started in 1998 🙂 ).
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