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Frequently Asked Questions
Q:
I was looking at the celestron nexstar 80 GTL computerised refracter telescope and was just wondering if it is still for sale and not discontinued as I've read on other sites that it is? Also, I was wondering what would be better to use in terms of seeing more things in the sky such as Jupiter between the celestron nexstar 80 GTL refractor mentioned above and the celestron
astromaster 130 EQ reflector?
astromaster 130 EQ reflector?
A:
Unfortunately, the 80 GTL has been discontinued as you said! Really sorry about that - I've updated the website to show the telescope as unavailable. This telescope model has been superseded by newer models such as the Celestron 80 LCM Computerised Refractor Telescope (http://www.ozscopes.com.au/celestron-80-lcm-computerised-refractor-telescope.html) and the Celestron NexStar 80 SLT Computerized Refractor Telescope (http://www.ozscopes.com.au/refractor-telescope-celestron-nexstar-80-slt.html), and you should have a look at them as well considering you were interested in the 80 GTL :)
In terms of how many things you can see in the sky, it's largely determined by aperture and magnification. Aperture is very important as it determines how much light a telescope can collect and therefore, how bright and clear the image will be. In this case, the Astromaster 130EQ has a much bigger aperture than the 80 GTL (130mm vs 80mm aperture). Magnification is determined by the eyepieces that you use with the telescope, and you can choose to buy more eyepieces or buy a Barlow lens (which doubles/triples the magnification of your eyepiece) to increase that magnification/power of your telescope.
So to answer your question, both the 80GTL and the Astromaster 130EQ are capable of viewing planets such as Jupiter, but with the Astromaster's 130EQ you'd definitely get better image quality. I would say it's best to go for telescopes with bigger apertures because it's the most important thing in getting excellent image quality, whereas you can easily add on eyepieces later on to add to the power of your telescope. The easiest way to find out the aperture of a telescope is in their name, and they're either in mm or in inches.
In terms of how many things you can see in the sky, it's largely determined by aperture and magnification. Aperture is very important as it determines how much light a telescope can collect and therefore, how bright and clear the image will be. In this case, the Astromaster 130EQ has a much bigger aperture than the 80 GTL (130mm vs 80mm aperture). Magnification is determined by the eyepieces that you use with the telescope, and you can choose to buy more eyepieces or buy a Barlow lens (which doubles/triples the magnification of your eyepiece) to increase that magnification/power of your telescope.
So to answer your question, both the 80GTL and the Astromaster 130EQ are capable of viewing planets such as Jupiter, but with the Astromaster's 130EQ you'd definitely get better image quality. I would say it's best to go for telescopes with bigger apertures because it's the most important thing in getting excellent image quality, whereas you can easily add on eyepieces later on to add to the power of your telescope. The easiest way to find out the aperture of a telescope is in their name, and they're either in mm or in inches.
