It is equipped with a 650mm diameter cassegrain reflector and a few small portable telescopes.
A number of portable telescopes had been provided Presthin appropriated one at once.
Astronomers, both professional and amateur, are seen on many moonless nights gazing up at the stars through portable telescopes.
When the astronomy instructor returned-he donated the first large portable telescope to the club-permitting public viewing.
The best portable telescopes, cameras, computers and so on.
Other smaller portable telescopes are available for visitor use.
A spotting scope is a small portable telescope with added optics to present an erect image, optimized for the observation of terrestrial objects.
In amateur astronomy, setting up a portable telescope equipped with setting circles requires:
He had his little notebook computer with the presentation notes on and a small portable telescope with an equatorial fork mount.
Amateur astronomers often look at the sky using nothing more than their eyes, but common tools for amateur astronomy include portable telescopes and binoculars.
