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Five Reflector Performance Killers
The Newtonian reflector is one of the most versatile optical configurations ever created. Whether homebuilt or commercially manufactured, a good Newtonian can rival the performance of any optical...
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No-Tools Telescope Collimation
For optimum performance, precisely aligned optics are a must. Luckily, achieving this goal doesn’t have to be difficult. Most telescope users know that the only way to get every last drop of...
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A Tracking Platform for Astrophotography
This simple, easy-to-build mount provides the perfect introduction to long-exposure astrophotography. Round stars. That’s the difference between astrophotos captured with a camera that tracks the...
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Review: Canon 10×30 IS II Image-Stabilized Binoculars
Canon’s updated 10×30 image-stabilized binoculars remain a fine choice for stargazers and birders. Canon recently refreshed their line up of image-stabilized binoculars with new versions of their...
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Binocular Highlights 2nd Edition Now Available
Sky&Telescope has just released a new, slightly expanded edition of my book, Binocular Highlights. The original had been out for ten years and sold very well, so instead of simply doing another...
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Review: Canon’s Image-Stabilized Binoculars
Over the years I’ve tested virtually every affordable image-stabilized binocular on the market for reviews appearing in Sky & Telescope magazine. Canon is the clear leader where astronomy is...
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A Brief Note About GarySeronik.com
It’s been a busy time of late, full of transition and change for me — the effects of which will become subtly apparent here at GarySeronik.com. Most notably (and happily!) I’m once again with...
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Diving Into the Moon’s Bay of Rainbows
The Sinus Iridum “Golden Handle.” North is up and east is to the right (keeping in mind east and west on the Moon’s surface are opposite sky directions).Gary Seronik This item is posted on the Sky...
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The Top 5 Comets of the Past 25 Years
Comet C/2020 F3 (NEOWISE) photographed on July 15, 2020. Few celestial objects excite the imaginations of stargazers and the general public like a good comet. The recent apparition of Comet C/2020 F3...
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“My” Asteroid
Photo courtesy Alan Hale I was delighted and surprised to learn that an asteroid has been named after me. The chunk of main-belt debris provisionally known as 1993 FE15 is now officially listed as...
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