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An easy-to-use computerized telescope with SkyAlign Technology. Point the telescope at three bright objects in the sky, and SkyAlign will then align your NexStar 102GT.
With SkyAlign, setting up and using a computerized telescope is faster and easier than ever before. Point the telescope at three bright objects in the sky and the telescope tells YOU what the objects are. You do not need to know the names of the stars – you can even pick the moon or bright planets! SkyAlign is the easiest method to align a computerized telescope; it's perfect for beginners and provides the convenience and accuracy demanded by experienced users.
Input the date, time and your location (GPS models obtain all this information automatically) and then point the telescope at three bright stars of your choosing. There is no need to point the telescope north or to level the optical tube as in previous alignment methods. The initial position of the telescope is irrelevant. This makes for a fast and very easy method for aligning the telescope.
What is Alignment?
You have to know where you are in order to find your destination – that is what aligning a computerized telescope is all about. The software for the telescope needs to know the exact orientation of the telescope in relation to the night sky in order to find the tens of thousands of celestial objects programmed in the hand control.
Taking the Guesswork out of Alignment
Other methods for aligning a computerized telescope require the user to confirm what star the telescope is pointing at in order to align. If you don't know where Arcturus or Sirius is, how can you confirm that information? The best you can do is guess. SkyAlign is the only alignment method where you truly do not have to know the night sky – and it's only available from Celestron.
How does it work?
The NexStar® software with SkyAlign measures the distance in each axis between the objects you selected. Given the current time and location, the software then compares the data to the expected distances of objects in the hand control's internal database . Once matches are found, the hand control displays the names of the three objects you selected to help you learn the night sky.
For the telescopes that have this technology feature, users can upgrade their telescope's operating software via the Internet. Current upgrades can be found through our downloads section and on each telescope's product page. To receive an announcement when upgrades have been added, make sure you are subscribed to our mailing list.
Celestron has been in the forefront of computerized telescope technology for over two decades. We have taken this expertise in telescope technology one step further by introducing the NexRemote™ Telescope Control Software. NexRemote allows the user to control their Celestron computerized telescope from their personal computer. Everything that is done using the telescope’s hand control can now be done remotely from a PC or laptop. This software was developed for Celestron’s high-end telescopes that use the NexStar control system including the NexStar "i" Series, Advanced Series, NexStar GPS Series and CGE Series.
NexRemote provides full emulation of every aspect of the Celestron Computerized Hand Control including:
Computer:
Port:
Cable:
Gamepad:
NOTE: Virtually any gamepad can be configured to work with NexRemote. Read the help files for details.
SPECIFICATIONS
Optical Design | Refractor |
Aperture (mm) | 102 mm (4.02 in) |
Focal Length | 1000 mm (39 in) |
Focal Ratio | 9.8 |
Highest Useful Magnification | 241 x |
Lowest Useful Magnification | 15 x |
Limiting Stellar Magnitude | 12.5 |
Resolution (Rayleigh) | 1.37 arc seconds |
Resolution (Dawes) | 1.14 arc seconds |
Light Gathering Power (Compared to human eye) | 212 x |
Linear Field of View (@1000 yds) | 53 ft (16 m) |
Optical Tube Length | 35 in (889 mm) |
Slew Speeds | Nine slew speeds: 4º /sec, 2º /sec, 1º/sec, .5 /sec, 32x, 16x, 8x, 4x, 2x |
Tracking Rates | Sidereal, Solar and Lunar |
Tracking Modes | Alt-Az, EQ North & EQ South |
Alignment Procedures | SkyAlign, Auto Two-Star, Two-Star, One-Star, Solar System Align |
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 object database. 25 user defined programmable objects. Enhanced information on over 100 objects. |