About this product
Part Number: 11008-CGL
The CPC Deluxe 925 HD combines Celestron's newly designed fork mount with its new EdgeHD optical system.
This telescope is at home as a superb visual instrument or with optional Pro Wedge and CCD cameras, as a serious astro imager's tool. With over 9 inches of aperture and premium StarBright XLT coatings, the CPC Deluxe 925 HD gives you over 1100 times the light gathering power than the unaided eye. Turn this scope to planets and see amazing detail on the surface of Jupiter, see Cassini's Division in the rings of Saturn and resolve details on the surface of Mars. Even the distant Uranus, Neptune and Pluto are within your reach. Although large in aperture, with its conveniently located carrying handles this telescope is portable enough to set up in your backyard or take with you to your favourite dark sky location.
- EdgeHD Optics
- Celestron's premium StarBright XLT coatings
- Fully computerized dual fork arm Altazimuth mount
- 50 mm finderscope to help accurately find objects
- Heavy-duty tripod makes attaching the telescope so easy you can do it in the dark; also features sturdy 2" stainless steel legs and accessory tray
- 23 mm, 82 degree Luminos Eyepiece - 2"
- Ergonomic design allows you to comfortably lift and move the telescope from location to location
- Star diagonal provides a more comfortable viewing position when observing objects that are high in the sky
- Convenient remote hand control holder allows you to view information hands-free while using the scope
- Mirror Support Knobs hold the mirror in place and reduce image shift during imaging
Computerized Mount Features
- Proven NexStar computer control technology
- SkyAlign allows you to align on any three bright celestial objects, providing a fast and easy alignment process
- 40,000 object database with over 100 user-definable objects and expanded information on over 200 objects
- Custom database lists of all the most famous deep-sky objects by name and catalog number; the most beautiful double, triple and quadruple stars; variable stars; solar system objects and asterisms
- Re-designed drive base and drive mechanics with spring loaded RA worm block with enveloping brass teeth
- Re-designed electronics deliver constant regulated power to the motors making them capable of driving the telescope even when not perfectly balanced
- Computer assisted All-Star polar-alignment
- Flash upgradeable hand control software and motor control units for downloading product updates over the Internet
- Permanent PEC
- Auxiliary port for additional accessories such as an Autoguider
- NexRemote telescope control software and RS-232 cable included for advanced control of your telescope via computer
New Optical Design
The EdgeHD optical system combines all of the compact power popularized by the SCT with an improved high definition optical system for wide field, astrograph quality images. As a visual instrument, EdgeHD optics deliver pinpoint images even with your widest field eyepiece. You can search for all of the Messier Catalog objects, and see hundreds of other NGC, IC and Caldwell objects with amazing clarity. For astro imaging, EdgeHD optics produce aberration-free images across your favorite CCD or DSLR camera. All EdgeHD optics are designed to produce an extremely flat focal plane precise enough to match the strict tolerances of the largest commercial CCD detectors, allowing stars to be in tight focus to the very edge of the chip. Learn more about the benefits and features of this new optical system by going to the EdgeHD web page.
The Celestron Product Development team has released a whitepaper outlining the technology behind EdgeHD. This paper describes the development goals, design decisions, optical performance, and their practical realization in 8-, 9.25-, 11-, and 14-inch apertures. We include cross-sections of the EdgeHD series, comparative spot diagrams for the EdgeHD and competing “coma-free” Schmidt-Cassegrain designs, a table with specifications for visual and imaging, graphics showing how to place sensors at the optimum back-focus distance, and details on the construction and testing of the EdgeHD telescope series.
Celestron Edge HD White Paper pdf (6.5mb)
The CPC Deluxe HD Series' internal GPS receiver automatically downloads the date and time from orbiting satellites and pinpoints its exact location on Earth. This eliminates the need for you to manually enter the date, time, longitude and latitude.
Celestron's Revolutionary SkyAlign
Once the CPC's internal GPS has established the telescope's position, aligning the telescope is as easy as 1-2-3! Simply locate and use the hand control to manually point (slew) the telescope to three bright celestial objects. You do not need to know the names of the stars. You may even pick the Moon or bright planets! Celestron's NexStar™ software technology will model the night sky to determine the position of every star, planet and celestial object above the horizon. Once aligned, the remote hand control allows direct access to each of the celestial catalogs in its user-friendly database.
Celestial Object Database
The CPC database contains over 40,000 celestial objects including Messier objects, the Caldwell Catalogue, as well as NGC Galaxies, nebulae and planets. User-definable filter limits make navigating through this expansive database quicker and easier. Filter Limits let you filter out objects that are outside of your local horizon (ie, if trees or mountains were in the way). There's also "Solar System Align" that lets you align on the Sun or Moon for daytime observing – it is easy to use this to see planets or bright stars in the day.
All EdgeHD optical tubes are equipped with a removable secondary mirror for fast f/2 CCD imaging. Not only does imaging in the FASTAR configuration allow for exposure times that are 25 times faster than at f/10, but also yields a field of view five times wider. A perfect combination for imaging your favourite wide field objects in a fraction of the time. (FASTAR imaging requires a third party lens assembly in place of the secondary mirror).
Design With the introduction of the CPC Deluxe HD series, Celestron has gone back to the drawing board and re-designed and re-engineered the drive train with a larger 6 inch, 180 tooth brass gear and .75" stainless steel worm gear and unique roller bearing design with both Steel and Nylon ball bearings rotating around a wide 9.8 track designed for smoother tracking accuracy for long exposure astrophotography.
Innovation The CPC Deluxe HD series uses the innovative All-Star™ Polar alignment procedure. Coupled with Celestron's optional Pro Wedge, All-Star allows users to choose any bright star, while the software calculates and assists with polar alignment. Another great feature of the CPC, sure to please astro imagers, is the Permanent Periodic Error Correction (PEC), which allows users to train out the worm gears periodic errors, while the mount retains the PEC recordings.
Power Management Redesigned electronics deliver constant regulated power to the motors making them capable of driving the telescope, even when not perfectly balanced, without sacrificing smooth tracking motion and pointing accuracy across the entire sky.
Performance For objects near the Meridian (imaginary line passing from North to South), the CPC will track continuously through the Meridian for uninterrupted imaging through the most ideal part of the sky.
Optical Design: EdgeHD
Aperture (mm): 235 mm (9.25 in)
Focal Length (mm): 2350 mm (93 in)
Focal Ratio: 10
Eyepiece 1 (mm): 23 mm (0.91 in)
Magnification with supplied 23mm eyepiece: 102 x
Finderscope: 50 mm Finderscope with quick release bracket
Star Diagonal: 2" with 1.25" adapter
Mount: Dual Fork Arm
Optical Tube: Aluminium
Accessory Tray: Die Cast Aluminium Leg Brace / Eyepiece holder
Tripod: Heavy Duty Stainless Steel Adjustable
Power Supply: Car battery adapter
Highest Useful Magnification: 555 x
Lowest Useful Magnification: 34 x
Limiting Stellar Magnitude: 14.4
Resolution (Rayleigh): 0.59 arc seconds
Resolution (Dawes): 0.49 arc seconds
Light Gathering Power (Compared to human eye): 1127 x
Angular Field of View (deg): 0.8 °
Linear Field of View (@1000 yds): 42 ft (13 m)
Secondary Mirror Obstruction: 3.35 in (85 mm)
Secondary Mirror Obstruction by Diameter: 36 %
Secondary Mirror Obstruction by Area: 13 %
Optical Coatings: Starbright XLT Coating
Telescope Weight: 43 lbs (20 kg)
Tripod and Mount Weight: 58 lbs (26 kg)
Motor Drive: DC Servo motors with encoders, both axes
Motor Resolution: 0.1406
Tracking Rates: Sidereal, Solar and Lunar
Tracking Modes: Altazimuth, EQ North and EQ South
Alignment Procedures: SkyAlign, Auto Two-Star Alignment, Two-star Align, SolarSystem Align, EQ North Align, EQ South Align, One-Star Align
Software Precision: 24 bit, 0.08 calculations
Periodic Error Correction: Permanently Programmable
Fork Arm: Dual fork arm, cast Aluminium with detachable HC cradle
Gears: 6" Brass main gear, 180 tooth, .75" Stainless steel worm gear
Bearings: 9.8 azimuth bearing
Motor Ports: Aux Port, Autoguide Ports
Communication Ports: RS-232 communication port on hand control
Computer Hand Control: Flash upgradeable, double line, 16 character Liquid Crystal Display; 19 fibre-optic backlit LED buttons
Database: 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
Power Requirements: 12V DC 2.5A
Cord Management: Cord Wrap Software
GPS: Internal 16 channel
|Aperture (mm)||235 mm (9.25 in)|
|Focal Length||2350 mm (93 in)|
|Focal Length of Eyepiece 1 (mm)||23 mm (0.91 in)|
|Magnification of Eyepiece 1||102 x|
|Finderscope||50 mm Finderscope with quick release bracket|
|Star Diagonal||2" w/1.25" adapter|
|Mount Type||Dual Fork Arm|
|Accessory Tray||Die Cast Aluminum Leg Brace / Eyepiece holder|
|Tripod||Heavy Duty Stainless Steel Adjustable|
|Power Requirements||Car battery adapter|
|Highest Useful Magnification||555 x|
|Lowest Useful Magnification||34 x|
|Limiting Stellar Magnitude||14.4|
|Resolution (Rayleigh)||0.59 arc seconds|
|Resolution (Dawes)||0.49 arc seconds|
|Light Gathering Power (Compared to human eye)||1127 x|
|Apparent Field of View||0.8 °|
|Secondary Mirror Obstruction||3.35 in (85 mm)|
|Secondary Mirror Obstruction by Diameter||36%|
|Secondary Mirror Obstruction by Area||13%|
|Optical Coatings||Starbright XLT Coating|
|Total Telescope Kit Weight||58 lbs (26 kg)|
|Tracking Rates||Sidereal, Solar and Lunar|
|Tracking Modes||Altazimuth, EQ North and EQ South|
|Alignment Procedures||SkyAlign, Auto Two-Star Alignment, Two-star Align, SolarSystem Align, EQ North Align, EQ South Align, One-Star Align|
|Periodic Error Correction||Permanently Programmable|
|Communication Ports||RS-232 communication port on hand control|
|Computer Hand Control||Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons|
|Database||40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects|
|GPS||Internal 16 channel|
|Warranty||2-year Telescope Warranty|
Please fill in the form below to ask a question.