Celestron CPC 925 GPS XLT (11074-XLT)

Celestron CPC 925 GPS XLT

The Celestron CPC 925 GPS XLT provides excellent, high-contrast views and can perform at very high magnifications. It is equipped with Celestron’s patented StarBright® XLT optical coatings, which visibly increase contrast and light transmission for brighter deep space images and shorter exposure times. With StarBright XLT, you’ll be able to discern subtle details while viewing the Moon and planets as well as faint galaxies and nebulae. The tube offers a focal ratio of f/10 with the added versatility of Fastar (see below). You can also pair it with the f/6.3 focal reducer for even more astroimaging options.

Fastar Technology

In 1997, CCDs were making a name for themselves in the astrophotography world, quickly supplanting traditional film photography thanks to their speed and convenience. This was the year that Celestron joined forces with the Santa Barbara Instruments Group (SBIG) to produce Fastar, a revolutionary add-on to Celestron’s hugely popular Schmidt-Cassegrain (SCT) optical system. With Fastar, the SCT’s secondary mirror can be removed and replaced with a field-flattening lens assembly (sold separately by third party manufacturers) so that a CCD camera can be used in the front of the telescope at the f/2 focus of the instrument’s primary mirror. The potential of the Fastar system is staggering: exposures are 25 times shorter than if the camera was placed at the instrument’s native f/10 focus. Imagers can capture galaxies and nebulae with exposures of just 30 seconds.

StarBright XLT coatings

StarBright XLT is Celestron’s revolutionary optical coating system. It consistently outperforms all other coatings in the commercial telescope market. There are three major components that make up our StarBright XLT high-transmission optical system design:

• Unique enhanced multi-layer mirror coatings made from precise layers of aluminum, SiO2 (quartz), TiO2 (titanium dioxide), and SiO2 (silicon dioxide). Reflectivity is fairly flat across the spectrum, optimizing it for both imaging and visual observing.
• Multi-layer anti-reflective coatings made from precise layers of MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide). Hafnium—a rare element that costs nearly $2,000 per kilogram—gives us a wider band pass than the titanium used in competing coatings.
• High-transmission water white glass is used instead of soda lime glass for the corrector lens. Water white glass transmits about 90.5% of light without anti-reflective coatings; that’s 3.5% better than uncoated soda lime glass. When water white glass is used in conjunction with StarBright XLT’s anti-reflective coatings, the average transmission reaches an astonishing 97.4.

These three components make StarBright XLT one of the finest coatings available.

Computerized Mount Features

• Proven NexStar computer control technology
• 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 - Quiet operation; large drive gears, quick release clutch
• SkyAlign allows you to align on any three bright celestial objects, making for a fast and easy alignment process
• 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 Autoguider, GPS accessory
• NexRemote telescope control software and RS-232 cable included for advanced control of your telescope via computer

Technical Specifications

OPTICAL TUBE INFO:
Optical Design:	Schmidt-Cassegrain
Aperture:	235mm (9.25")
Focal Length:	2350mm (93")
Focal Ratio:	f/10
Focal Length of Eyepiece 1:	40mm (1.57")
Magnification of Eyepiece 1:	59x
Finderscope:	9x50 Finderscope with quick release bracket
Star Diagonal:	1.25" Star Diagonal
Optical Tube:	Aluminum
Highest Useful Magnification:	555x
Lowest Useful Magnification:	34x
Limiting Stellar Magnitude:	14.4
Resolution (Rayleigh):	0.59 arc seconds
Resolution (Dawes):	0.49 arc seconds
Light Gathering Power (Compared to human eye):	1127x
Secondary Mirror Obstruction:	85mm (3.35")
Secondary Mirror Obstruction by Diameter:	36%
Secondary Mirror Obstruction by Area:	13%
Optical Coatings:	Starbright XLT
Optical Tube Length:	559mm (22")
Optical Tube Diameter:	271.78mm (10.7")
Optical Tube Weight:	58 lbs (26.3 kg) with mount
Dovetail:	None
MOUNT INFO:
Mount Type:	Computerized Altitude-Azimuth Dual Fork Arm
Height adjustment range (includes mount and tripod):	1397mm - 1778mm (55" - 70")
Tripod leg diameter:	50.8mm (2") Stainless Steel
Mount Head Weight:	58 lbs (26.3 kg) with optical tube
Accessory Tray:	Yes
Tripod Weight:	19 lbs (8.6 kg)
Slew Speed:	9 slew speeds - max speed 5°/second
Tracking Rates:	Sidereal, Solar and Lunar
Tracking Modes:	Altazimuth, EQ North and EQ South
GPS:	Internal 16 channel
Dovetail Compatibility:	none
Number of Auxiliary ports:	2 AUX Ports (Hand Control can use any of the AUX Ports)
Autoguide Port:	Yes
USB Port:	Yes, on hand control
Power Requirements:	12 VDC-1.5A (Tip positive)
Motor Drive:	DC servo motors
Alignment Procedures:	Sky Align, Auto Two-Star Align, Two-Star Align, Solar System Align, EQ North Align and EQ South Align
Periodic Error Correction:	Yes
Computerized Hand Control:	2 line x 18 character backlit Liquid Crystal Display, 19 LED backlit buttons, USB 2.0 Port for PC connection
NexStar+ Database:	40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
Software:	Celestron Starry Night Special Edition Software and SkyPortal App
Total Telescope Kit Weight:	77 lbs ( 34.9 kg)
Included Items:	Optical tube Mount and Tripod Accessory Tray 40mm eyepiece 1.25" Star Diagonal 50mm 9x50 Finderscope with Bracket Instruction Manual

In the Box

• Celestron CPC 925 GPS XLT
  
• Optical tube
  
• Mount and Tripod
  
• Accessory Tray
  
• 40mm eyepiece
  
• 1.25" Star Diagonal
  
• 50mm 9x50 Finderscope with Bracket
  
• Instruction Manual

Warranty & Manuals

2-Year Warranty