Hello there my name is Jim and I just received a nice beginners telescope for Christmas. It is a Celestron Nexstar 130SLT Computerized Telescope. 130 is the primary mirror size in mm or in inches 5.11811. The focal length is 630mm or 24.8031 inches.
You can click the link above to learn more about it. But here are the basic points.
- High quality 130mm Newtonian Reflector
- Fully computerized Altazimuth mount
- StarPointer™ red-dot finderscope to help with alignment and accurately locating objects
- Quick-release fork arm mount, optical tube and accessory tray for quick, no-tool set up
- Sturdy, stainless steel tripod and accessory tray included
- Perfect for celestial observing
It comes with some basic eye pieces. 25mm and 9mm. the 25mm which is 25x and 9mm which is 70x. You find the power of an eye piece by dividing focal length by the eye piece.
630/25 = 25.2
630/9 = 70
You can figure the maximum power it can go to reliably by doubling the primary mirror size 130*2 or 260x is the highest you should use.
Since this is a Newtonian Reflector it has the primary mirror at the end of the tube and a secondary mirror to bring the image to the eye piece.
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