Backyard Voyager: The Amateur Astronomer

Celestron's 9.25 inch Schmidt-Cassegrain - Equipment Reviews - Orion's 12 inch Dobsonian mounted Newtonian reflector

My first two telescope choices

by Stephen Reb

Celestron's 9.25 inch Schmidt Cassegrain

You wouldn't think it would be that tough to choose a telescope, since there are essentially only two types of optical

systems, refractors and reflectors. But there are dozens of variations on those themes, and dozens of comapanies creating those variations. Narrowing it to only one telescope makes the choice even harder. In my case it Celestron Advanced Series 9.25" Schmidt-Cassegrain took six months.

At left is the Celestron 9.25 with some of the accessories I ordered along with the scope. It didn't take long to discover that many were necessities, or, at least so close to being necessary that getting along without them was an undesirable prospect.

No telescope is perfect. You'll never find one that excels at every task you might require of it. There are quality and feature tradeoffs involved in any purchase decision, and most people who stick with the hobby for any length of time end up with more than one telescope. But you have to start somewhere, and in the end a Schmidt-Cassegrain seemed like a good compromise-- decent optics with enough aperture for deep space objects in a relatively compact package.

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Orion 12" XTI Reflector

After reading a few lengthy debates between die-hard apochromatic refractor fans and Newtonian reflector devotees, I was pretty much sold on the reflector idea. Evidently so were a lot of other people. Isaac Newton's design had been around for a while by the time I learned of it. Orion's line of reflectors especially interested me, since their introduction of the "Intelliscope," their "Classic" dob with digital setting circles added.

Another interesting aspect of their line of reflectors was the reported quality of the mass-produced Chinese mirrorsOrion dosonian reflector 12"they used. Fewer and fewer reviewers were spent much time on words and phrases like "consistent" or "sample-to-sample variation." Yet another point of interest was the ever increasing size of their reportedly decent Pyrex mirrors. By the time they reached 12 inches, at a price of right around a thousand dollars, I was nearly sold.

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