|

UK Telescopes Home
Telescopes
Starter Kit
Telescopes
Binoculars
Observation Binoculars
Beginners Guide To Telescopes
Contact Us
Delivery
Terms & Conditions
Link Page
Site Map

Telephone Orders
01588 620717
|
Celestron NexStar 9.25 GPS XLT
NexStar 9
1/4 GPS —
Unique design, advanced features, GOTO accuracy, and superb optics. You get
the picture.
The 9 1/4" was already a favourite among astrophotographers and discerning
visual observers, but now with the carbon fibre 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 fibre tube and
Celestron`s renowned Star Bright multi-coatings. The NexStar 9 1/4" is
compatible with the complete line of Celestron photographic and visual
accessories.
.jpg)
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 Fibre Tube — 1/4 the thermal expansion of aluminium which creates a
more stable focus. The Carbon Fibre tube is 4 times more resistant to
temperature changes than aluminium 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 aluminium 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 auto guider or a drive corrector for
long exposure imaging or astrophotography.
Star Bright coatings — High quality multi-layer coatings maximize
transmission of light to the film plane. Star Bright 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.
Levelling — Levelling accuracy, which applies to both altazimuth and
equatorial mounts, is accomplished by an internal switch that levels the
base to an accuracy of 1 arc minute.
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.
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.
|
Included Accessories |
Specification |
|
40mm
Plossl Eyepiece - 31.7mm (59x)
90° Star Diagonal - 31.7mm
9x50 Finder scope and Bracket
Computerised Fork Mount
NexStar® Hand Control Box
Global Positioning System built-in
Internal electronic compass
Visual back
Car Battery Adapter
FREE 8 X 56 BINOCULARS!
 |
Optical Specifications
235mm (9.25") Aperture Schmidt-Cassegrain (made in the USA)
Focal Length: 2350mm
Focal Ratio: f/10.0
Star Bright XLT Multi-Coated
Highest Useable Magnification: 585x
Limiting Stellar Magnitude: 14.4
Optical Tube Length: 56cm
Mechanical Specification
Optical Tube - Carbon Fibre
Heavy Duty, motorised, dual fork arm
Fully enclosed high speed motors on both axes
Integrated hand controller built into the side of the fork arm
Unique Integrated Handle design
Optical Tube Assembly outer rails
Sturdy, Adjustable Heavy Duty Tripod
Leg Brace
Weight: 35kg
GoTo Specifications
40,000+ object database
400 user defined programmable objects.
Enhanced information on over 200 objects
Double line, 16 character Liquid Crystal Display Hand Control
Nine slew speeds: 3º/sec, 2º/sec, 0.5º/sec, 64x, 16x, 8x, 4x, 1x, 0.5x
Auto Guide port and Auxiliary Ports on drive base
RS-232 communication port on hand control
16 channel GPS Receiver |
2 Year Guarantee
Please call
All major credit cards accepted - please
phone our hotline Tel: 01588 620717

Evergreen Optics
The Cann Barn, Mellington, Church Stoke,
Montgomery, SY15 6TQ
|