- Taking the chair for a spin:
Large binoculars for astronomy
are now widely available at attractive prices, much lower than
that of just a few years ago. In 2003, I purchased a pair of 25X100
binoculars from Apogee for $300 and have a review posted
HERE. I've seen the binoculars for sale for even less recently.
I have really enjoyed the stunning widefield views through these
large binos that are not possible through any of my telescopes.
The problem with large astronomy binoculars is their weight. For
comets Hyakutake (1996) and Hale-Bopp (1997), I built a binocular
parallelogram mount using directions published in an astronomy
magazine. I oversized the parts so that I could use larger binoculars
and be able to view from a reclining lawn chair. You can see it
at the bottom of the page HERE.
Although the parallelogram mount works well for observing a single
object such as a comet, or a small section of the sky, it is not
convenient when scanning a large section of the sky, because of
the need to sit up and relocate the reclining chair. The solution
is a motorized binocular chair. Such a chair is advertised in
astronomy magazines at a very high price. I decided to build my
own motorized binocular chair that would support heavy astronomy
binoculars, such as my 10 pound 25X100 Apogee binoculars. My construction
notes with construction details follow.
I built this binocular chair for
my body size and weight. I am not responsible for any injury or
damage if you decide to build one using my plans. These plans
detail how I designed and constructed my motorized big bino chair
and may be helpful to those who want to build their own.
All design objectives above were
met with the additional advantage of the cordless drill being
easily removed from the bino chair for use as a regular drill.
The project consists of building
three main components:
Page - Page 2 - Construction of Ground Board
Big Astronomy Binoculars - Large Astronomy