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SÉRIE ADVANCED / ADVANCED SERIE
The Advanced Series family of computerized GoTo and non-computerized telescopes was designed to offer the novice or more advanced user a selection of models with the features and quality that serious amateurs can appreciate. These scopes come on heavy-duty German Equatorial mounts with ultra-sturdy 2" stainless steel legs and center tray for superior rigidity and vibration dampening. The Advanced Series comes in refractor, reflector, Schmidt-Cassegrain and now Maksutov-Cassegrain models. The refractor models range from a 4" to an impressive 6" aperture. For even more light gathering power there are 6", 8" and a NEW 10" Newtonian Reflector. We have added a 5" Maksutov model with our C130-M. There are also 5", 8", 9 1/4" and our NEW 11" Schmidt-Cassegrain optical designs that feature Celestron's precision matched and hand-figured optical systems.
CG-5 Mount — Precision engineered for stability.
CG-5 German Equatorial mount has precision worm gears on both axes for extremely smooth operation. The key element that makes this system the most stable in its class is the heavy-duty tripod with large, substantial legs that offer excellent damping characteristics for more stable views. The CG-5 also has a convenient latitude scale for easier alignment and an optional polar finder scope for the ultimate in precision alignments.
GoTo convenience and GPS compatibility for precision accuracy.
The GT versions of the Advanced Series on a computerized GoTo version of Celestron's sturdy CG-5 mount. Couple this solid mount with the included computerized control system to utilize many of the same functions and features-like the NexStar computer control system and an Autoguider port for long exposure deep sky astrophotography-as Celestron's most advanced GoTo telescopes. GoTo models are also upgradeable to GPS with the optional CN16 GPS Accessory (#93963) allowing your telescope to pinpoint your position on the earth, the date and time, making the alignment process faster and easier than ever before! These GoTo versions of the Advanced Series also come loaded with new software features and over 40,000 database objects. Capable of holding over 35 lbs of payload and slewing at 4º per second, you will be able to instantly point to any of the celestial objects in the database.
The Advanced GT Series telescopes include these high performance features:
GPS-compatible with optional CN16 GPS Accessory (#93963)
Proven NexStar® computer control technology
RS-232 communication port on hand control to control the telescope via a personal computer
Autoguider port for long exposure astrophotography
40,000+ object database with 400 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 star; solar systems; objects and asterisms
Double line, 16-character Liquid Crystal Display Hand Control with 19 fiber optic backlit LED buttons
DC Servo motors with encoders on both axes
The CG-5 GT computerized mount features Celestron’s sleek integrated design.
Optional XLT Coatings :
There are three major components that make up StarBright XLT high transmission optical system design:
1. Unique enhanced multi-layer mirror coatings
Mirror coatings are made from precise layers of Aluminum (Al), SiO2 (quartz), TiO2 (Titanium Dioxide), and Si02. Reflectivity is fairly flat across the spectrum, optimizing it for both CCD imaging and visual use.
2. Multi-layer anti-reflective coatings
Made from precise layers of MgF2 (Magnesium Fluoride), and HfO2 (Hafnium Dioxide) A rare element costing nearly $2000 per kilogram, Hafnium gives us a wider band pass than Titanium, used in competing coatings.
3. High Transmission Water White glass
Celestron Schmidt-Cassegrain optical systems with optional StarBright XLT coatings use Water White glass instead of Soda Lime glass for the corrector lens. Water White glass transmits about 90.5% without anti-reflective coatings. That is 3.5% better transmission than uncoated Soda Lime glass. When Water White glass is used in conjunction with StarBright XLT's anti-reflective coatings, the average transmission reaches 97.4% — an 8% improvement!
These three components of StarBright XLT coatings result in one of the finest coatings available. The peak transmission for the systems is 89% at 520 nm. The overall system transmission is 83.5% averaged over the spectrum from 400 to 750 nm.
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