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
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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   other   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   millions   or billions of years to glimpse objects 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.