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NexStar 76 GT

In the spring of 2004, Celestron introduced a new NexStar GT model with a 76mm Newtonian reflector optical tube.  The general description of GT mount as found in The NexStar User's Guide applies equally to this scope.

The NexStar 76 is a small step up from the NexStar 60, but still a very limited scope.  Deep sky objects will be slightly brighter, but still this scope is mainly limited to planetary and lunar exploration as well as double stars and open star clusters.  To enjoy views of the planets and Moon that are improved over the NexStar 60, you will need to master collimation of the scope.  While not terribly difficult, collimation is a daunting task for a newcomer to astronomy - the most likely person to purchase a scope like this.  If you live

NexStar 76 GT at a Glance

Optical System: Newtonian Reflector
Approximate Street Price: $230 (includes tripod)
Aperture: 76mm
Focal Length: 700mm
Focal Ratio: f/9.2
Supplied Eyepieces: 10mm SMA (70x)
                                  25mm SMA (28x)
Maximum Magnification: 150x
Maximum Field of View: 2.6
Magnitude Limit: 11.2
Resolution Limit: 1.8 arcsecond
Finder: 1x power red-dot
Objects in HC Database: 4,033
Weight (includes tripod): 12 lbs. (5.5 kg)

in an area with an active astronomy club or if you have an experienced friend, you can easily learn good collimation techniques from them.  If you will be on your own, I would recommend you save a bit more money for the NexStar 80.

That said, there are advantages of the NexStar 76 over the NexStar 60 and 80.  Newtonian reflectors do not suffer from false color like achromatic refractors (the 60 and 80).  Double stars and star clusters will provide wonderful pinpoint images free from false color.

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Michael Swanson
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