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NexStar
9 1/4 GPS —
Unique design, advanced features, GOTO accuracy, and superb optics. You get
the picture.
Introducing the NEWEST member of the NexStar
GPS family of fully-automated GOTO telescopes. Celestron’s
9 1/4” optical system has enjoyed a loyal following
since we first introduced it with our Ultima 9 1/4” in
1995. Now the 9 1/4” optical tube is coupled with one
of the most popular mounts in Celestron’s history — the
NexStar GPS series.
The 9 1/4” was already a favorite among astrophotographers and discerning
visual observers, but now with the carbon fiber tube and the NexStar GPS mount,
it is a formidable addition to the NexStar GPS family. The 9 1/4” was
specifically designed for visual infinity focus when using 2" eyepieces
and has an optimized baffle system to benefit astrophotography by minimizing
vignetting at the edge of the field of view. Its longer primary focal length
and lower magnification secondary mirror contribute to a flatter field of view
at the focal plane and helps to further reduce optical aberrations.
This feature packed model comes standard with
a carbon fiber tube and Celestron's renowned StarBright ® multi-coatings.
The NexStar 9 1/4” is compatible with the complete
line of Celestron photographic and visual accessories. |
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What makes the NexStar 91/4” GPS great
for astrophotography?
- Longer focal length primary and lower magnification
secondary— Contributes to a flatter focal plane with less
coma and off-axis astigmatism.
- Baffle design —Optimized for astrophotography.
Minimizes vignetting at the edge of the field of view. This reduces
light drop off at the corners of your film plane.
- Carbon Fiber Tube — 1/4 the thermal expansion
of aluminum which creates a more stable focus. The Carbon Fiber
tube is 4 times more resistant to temperature changes than aluminum
tubes, thus minimizing your need to re-focus.
- Hand Figured Optics — Just like all other Celestron
Schmidt-Cassegrain telescopes, the NexStar 9 1/4” optics are individually
matched and hand figured to ensure the highest optical quality
in every telescope.
- Focus mechanism — At the heart of Celestron's
Schmidt-Cassegrain focus mechanism are pre-loaded ball bearings,
not bushings, minimizing focus shift.
- Heavy-duty die cast aluminum fork arms —For maximum
rigidity.
- Unique roller bearing design bearing and shaft
—The telescope base rotates around a wide 9.5” track for maximum
stability; especially important when equatorially mounted for
imaging.
- High quality Pittman® drive
motors — Made in the U.S.A., PittmanLO-COG™ brush-commutated DC
motors offer smooth, quiet operation and long life. The motor
armatures are skewed to minimize cogging which is required for
low speed tracking.
- Autoguider port — For interfacing an autoguider
or a drive corrector for long exposure imaging or astrophotography.
- StarBright coatings — High quality multi-layer
coatings maximize transmission of light to the film plane. StarBright
coatings are standard at no extra charge.
The NexStar 9 1/4” has all the features
that make our NexStar GPS family so popular:
- Internal Slip Ring — NexStar’s power cables and telescope accessory
cables will not get wrapped around the telescope.
- Integrated Handles — Carrying handles are integrated into fork
arms to make lifting and transporting easier.
- Leveling — Leveling accuracy, which applies to both altazimuth
and equatorial mounts, is accomplished by an internal switch that
levels the base to an accuracy of 1 arcminute.
- Auxiliary Ports — NexStar’s auxiliary ports are located on top
of the base which rotates as the telescope turns, preventing accessory
cables from wrapping around the fork arms.
- Optical Tube Assembly Outer Rails — An outer rail on each side
of the optical tube provides rigid, flex-free movement. The mounting
tolerance on the front cell allows the outer rails to expand and
contract independently of the optical tube assembly.
- 16-Channel GPS — NexStar’s GPS unit pinpoints your exact location
on Earth, while downloading the date and Universal Time down to
the second.
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- Hand Control and Software Features — 40,000+
object database. Features include: Compass Calibration, Polar
Alignment Routine, Equatorial Auto Align, Database Filter Limits,
Hibernate, Auto North and Level, Wedge Align Algorithm, Quick
Align, and User-Defined Slew Limits.
The NexStar GPS Series
9 1/4 GPS Specifications:
- 9.25" (235mm) Schmidt-Cassegrain Optical
Design
- 2350mm Focal Length, f/10
- StarBright Multi-Coatings
- Dual Fork Arm
- Carbon Fiber Optical Tube
- Double line, 16 character Liquid Crystal Display; 19 fiber optic
backlit Computer Hand Control
- RS-232 communication port on hand control
- Auxiliary Port and Autoguide Port on Drive Base
- 40,000+
object database
- 16 channel GPS Receiver
- Fork Tine and Optical Tube Weight – 58 lb.
The NexStar GPS Series
9 1/4 GPS Standard Accessories:
- 1-1/4" 40mm Eyepieces (59x)
- 1-1/4" Star Diagonal
- 9x50 Finderscope and Mounting Bracket
- 1-1/4" Visual Back
- AC Adapter (car battery adapter is included in some models)
- Heavy Duty Tripod
- NexRemote Telescope Control Software
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