Sky and Telescope - July 2018 - Cover2
Make Some History with a Tele Vue
Telescope of Your Own!
Image courtesy of Don Bruns
One Tele Vue
Telescope had only
t took Dr. Don Bruns
Illustration of the Tele Vue-NP101is
image identifying qualifying stars
used to measure positional deviation
due to the Sun's gravity.
148 seconds to
minutes to create history
make history, others
with a Tele Vue-NP101is. During totality of the 2017 total solar eclipse, he
have a lifetime!
imaged stars near the Sun, attempting to make the most accurate optical
measurement to date of Einstein's prediction that starlight will deﬂect by 1.75 arcseconds divided
by its distance from the sun as measured in solar radii. "My results were looking so good I needed
to calculate the theoretical value to a few more decimal places: 1.7512 arcseconds to be exact.
After careful analysis of my eclipse images, my ﬁnal deﬂection constant measured exactly 1.7512
arcseconds. A perfect conclusion to a perfect eclipse!" From creating scientiﬁc history to family
memories, Tele Vue's line of APO refractors are proven performers. Let us build an heirloom-quality instrument for you. Follow our blog at Televue.com for Don's and other Tele Vue user stories.
Vi s i o n a r y
32 Elkay Dr., Chester, New York 10918 (845) 469-4551.