One of the LARGEST Amateur Visual Telescopes on Earth!!!! 70-inch Aperture!
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- เผยแพร่เมื่อ 31 พ.ค. 2024
- One of the largest amateur telescopes lives just outside Salt Lake City. 70-inches in diameter! Huge! Mike Clements takes us on a tour of his hand built 70" Newtonian reflector style telescope. Mike made this out of inspiration from an old satellite blank that never made it to actual space use. This is one of the largest amateur telescopes available to the public on the Earth and it lives probably close enough to some of you! This telescope has been talked about and featured in numerous articles and forums across the globe.
******ASTROPHOTOGRAPHY EXPECTATIONS******: It’s not just that simple with this telescope and I know a lot of people have asked. Astrophotography using an Altazimuth design like this one introduces field rotation. This a common problem and it can be overcome with short exposures with focal lengths under 1500mm generally. This is combated using an EQ mount. But with a focal length of over 11,000mm and unstable seeing conditions, you are rarely ever able to take advantage of this aperture and magnification. For example, using a 40mm eyepiece is already 275x magnification. Most telescopes like a C11 can’t use 275x on some nights due to atmospheric turbulence. And this marvel, that’s the LOWEST it can go. Using a camera is going to deliver rotation and very fuzzy photos due to atmospheric turbulence. You will never be able to get short enough exposures, track precisely enough and avoid the atmosphere to get a clear and sharp photo 99% of the time. Even with a smartphone. Mike has configured this as visual instrument only and that is what it’s best at. I understand this may disappoint some folks, but we must respect his hard work and dedication on a part of the hobby he desires the most. His love is visual, not photographic.
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