The Essential Guide to Astronomy | We provide the world's leading compendium of information about the science and hobby of astronomy.
Sky & Telescope - December 2023 USA
Love staring at a star-lit sky? Now you can explore deeper by joining the Sky Watcher’s Association or enrolling in an Under The Sky Programme hosted by Kolkata Astronomy Center. Identify different celestial bodies and galaxies through a telescope under expert guidance. Learn basics of astronomy as you bust various misconceptions and superstitions about the night sky. An awesome way to kick off the night, don’t you think?
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Astronomical telescopes, satellite trackers, siderostats, heliostats, and gimbals (generically referred to here as telescopes) all require that they are driven in rotation about their axes. This article investigates the various drive technologies and discusses the advantages, disadvantages, and performance of these ways to drive a telescope.
Arduino Powered 'Scotch Mount' Star Tracker for Astrophotography: I learned about the Scotch Mount when I was younger and made one with my Dad when I was 16. It's a inexpensive, simple way to get started with Astrophotography, that covers the basics before you get in to the complicated telescope matters of prime f…
Page 27 of 80 - Post your home made scope - posted in ATM, Optics and DIY Forum: I think the old forums may have had a thread like this.. Here are the two scopes I have built, a 16 dob which I only have one photo handy. Guy grunting behind it is not me The other is the 12.5 rc I did a little while back. My My , I was going thru a few old photos of starparties I have been top in NZ and look what I found !!! , taken same day , cool . Brian.
This is a very cheap telesope tracker with the base components cost less than 10$.It is made for a EQ-5 mount but can probably be adapted to others.Pa
10-inch Dobsonian Telescope: This instructable documents the design and construction of a 10” reflector telescope. It is not intended to be a complete step-by-step instruction set, but rather to document some of the design details and methods that were used. There are a lot of…
We at Universe Today often hear theories purporting that Einstein is wrong, and perhaps one of the most common things cited is the speed limit for light used in his relativity theories. In a vacuum, light goes close to 300,000 km/s (roughly 186,000 miles a second). Using a bit of geometry, however, isn’t there a way … Continue reading "How A Laser Appears To Move Faster Than Light (And Why It Really Isn’t)"
Radio antenna at night with the Milky Way. - Clark Crenshaw Photography
Immerse yourself in the peaceful and calming open space at X Bar Ranch. From relaxing in a rocker to hiking along the trails, there's plenty to see and do.
In this post, I'll give you my advice on building your first deep sky astrophotography kit from the ground up. Recommendations on the mount, camera, and telescope.
How to make a barn door star tracker at home. This article goes in-depth on long exposure astrophotography.
To make stunning observations of the night sky, an expensive telescope is not required — you can build your own.
A description of Mel Bartels' 10.5 inch F2.7 telescope
Big Astroscan! I had the chance to look through it at the Oregon Star Party and it's one sweet scope. If these were actually in production, I'd totally buy one.
Members of the Astronomical Society of Nevada shared their telescopes and binoculars and provided an opportunity to get a close up view of the stellar objects so clearly visible in Lassen's dark night sky.
John Dobson, who died Jan. 15 at 98 years old, was a pioneer in DIY telescopes and amateur astronomy.
