The
14-inch
diameter
(0.36-meter)
f/4.6
Dobsonian
telescope
is
a
Newtonian-style
reflector
made
by
Orion
Telescopes,
who
has
been
supplying
telescopes
to
amateur
astronomers
for
more
than
30
years.
Its
primary
mirror
is
made
of
low-thermal-expansion
glass
which,
when
cooled
by
three
attached
fans
at
the
beginning
of
the
evening,
can
quickly
reach
a
stable
temperature
for
producing
crisp
views
of
the
heavens.
This
telescope's
primary
mirror
is
large
enough
to
capture
light
more
than
2,400
times
fainter
than
the
average
dark-adapted
human
eye,
enabling
observers
to
view
objects
as
near
as
the
moon
(240,000
miles
/
386,000
kilometers
away)
and
as
far
as
2.4
billion
light
years
(14
billion
trillion
miles
/
22
billion
trillion
kilometers).
Its
optics
can
resolve
detail
as
fine
as
the
width
of
a
U.S.
dime
seen
from
a
distance
of nearly seven miles (11.2 kilometers).
With
40,000+
objects
in
its
computer
database,
this
electronically-controlled
instrument
will
robotically
find,
center
and
track
fascinating
objects
around
the
heavens,
allowing
you
to
stand
or
sit
comfortably
at the eyepiece for extended views of your favorite celestial bodies.
ABOUT THE TELESCOPES
© Dennis L. Mammana. All rights reserved.
Frequently Asked Questions • About the Telescopes • About Borrego Springs • Contact
During
your
Night
Sky
Tour
you
will
be
peering
across
our
galaxy
through
one
of
two
large
telescopes.
The
primary
scope
is
an
11-inch
diameter
Schmidt-Cassegrain
reflector;
the
backup
is
a
14-inch
diameter
Dobsonian
reflector.
One
of
these
two
remarkable
instruments
will
be
used,
depending
on
conditions
and
astronomical
targets
selected
for
the
night,
and
will
transport
you
to
back
many
thousands,
millions or billions of years to glimpse distant and ancient celestial objects
—
some as they were long before humans walked the Earth.
The 11-inch Schmidt-Cassegrain
The 14-inch Dobsonian
The
11-inch
diameter
(0.28-meter)
f/10
Schmidt-Cassegrain
telescope
is
made
by
Celestron,
a
leader
in
astronomical
and
optical
technology
for
more
than
50
years.
This
instrument
is
the
larger model of that currently flying onboard the International Space Station.
Its
revolutionary
EdgeHD
optical
system
produces
sharp
views
free
of
optical
defects,
and
all
optical
surfaces
are
coated
with
Celestron’s
StarBright
XLT
coatings
to
produce
brighter
images
and
increased
light
transmission.
The
telescope's
primary
mirror
is
made
of
low-thermal-
expansion
glass
which,
when
cooled
by
three
attached
mag-lev
fans,
can
maintain
a
stable
temperature (with no vibrations) to produce crisp views of the heavens.
It
can
capture
light
more
than
1,400
times
fainter
than
the
average
dark-adapted
human
eye,
enabling
observers
to
view
objects
as
near
as
the
moon
(240,000
miles
/
386,000
kilometers
away)
and
as
far
as
2.4
billion
light
years
(14
billion
trillion
miles
/
22
billion
trillion
kilometers).
It
can
resolve
detail
as
fine
as
the
width
of
a
U.S.
dime
seen
from
a
distance
of
more
than
six
miles
(10.3 kilometers).
With
40,000+
objects
in
its
computer
database,
this
electronically-controlled
instrument
will
robotically
find,
center
and
track
fascinating
objects
around
the
heavens,
allowing
you
to
sit
comfortably at the eyepiece for extended views of your favorite celestial bodies.
