FAQ
General Telescope Information
Questions & Answers
How to Choose a
Telescope
Every day, we have potential telescope purchasers come into our store with stars in
their eyes. Our staff used to be surprised at the number of people who would
state that they had ALWAYS wanted a telescope, and that they were so
happy to finally be able to make that dream come true. But we are not caught by
surprise when hearing this little confession anymore, as it seems that nearly
everyone, at one time or another in their life, has dreamed about being able to
look into the depths of the heavens from their own little piece of earth. I have
never met a person who actually FORGOT the first time they saw Saturn
through a telescope. It is a memory that holds on tight to our imagination and
imbeds itself in our list of important life experiences... much the same way we
remember the first launch of the Space Shuttle, or, if we are "experienced"
enough, the assasination of John F. Kennedy.
If you have always wanted a
telescope, or if, like myself ten years ago, you find that you are suddenly
struck with the desire, you will need some help. There are lots of ads out there
in telescope-land, and lots of opinions to go with them; and afterall, how often
does one shop for a telescope? This is the reason for the OTHER look that
potential telescope purchasers have when they come into our store... the look of
utter confusion!
The information is broken down into three parts:
Questions to Ask Yourself Before You Begin, Telescopes Designs-Their Pro's and
Con's, and General Questions and Answers.
TOP
In order to help you decide which telescope path to walk down, ask
yourself these questions:
1) Do I want to use
my telescope during the day, at night, or both?
Not all telescopes fit all applications well. If you want to use
your telescope to whale watch, for instance, you will want to pick either a
refractor or Cassegrain design. You will want to stay away from reflectors. The
reason for this is that reflectors (more on the design differences later) give
an upside-down or sideways view of the world, while either a refractor or
Cassegrain telescope is capable of a image erect, left-to-right correct
"picture". TOP
2) Do I want to take
pictures through my telescope?
If you are into photography or think you might want to be in the
future, it is important to consider a few things. First of all, a sturdy mount
for the telescope is of more importance that usual... and it is always
important! A shaky mount will a fuzzy picture make. Stay away from the
inexpensive 60mm alt-az refractors. The mount on these things is just not stable
enough. You will also want to stay away from the "Dobsonian" style telescopes if
you want to do photography. While this style telescope is wonderful for visual
use, the mount does not lock down. So this leaves better refractors,
Cassegrain-style telescopes, and equatorially mounted reflectors on your list of
possibilities. If you want to do "deep-space" photography like the photos you
see in the pages of Astronomy or Sky & Telescope magazine(s), you will need
a dual-axis drive on your telescope. More on this later... TOP<
3) Do I want to
travel with my telescope? Take it in my car? Take it on a plane? (I feel like
Dr. Suess...)
Portability is a very strong deciding factor here. If you want to
travel on an airplane with your telescope, you will want to pick one that will
fit underneath the seat for your peace of mind. If you want to travel in your
car with your telescope, as most people do (dark skies give the best deep-space
views), then you need to think about whether the telescope, tripod, and
accessories will fit in your car (and allow you to still be able to wedge a
thermos of coffee between the seats). The most portable telescopes are
Cassegrain-types and short focal length refractors. More portable still are the
above-mentioned telescopes mounted on a sturdy photographic tripod (See Spotting Scope Info). TOP
4) Who is this telescope for? An adult? A child? Both?
If you are buying this telescope for yourself (assuming you are an
adult) or another grown-up, remember that our expectations are a bit higher than
that of a child. We expect the telescope to move smoothly, give nice images, and
allow us to see a plethora of objects. A child could very well be happy with a
telescope that will resolve the moon well and show the rings of Saturn. Consider
the age of the child. The older he or she is, the more they will expect. A
cheap, department-store telescope is not worth getting regardless of the age,
however. More enthusiastic beginners have lost their love for astronomy because
of the disappointing results and ridiculous claims made by the marketers of
these telescopes. Better to get a good pair of binoculars or save your money
towards a better telescope. TOP
5) Do I have a computer, and would it thrill me to no end to be
able to run my telescope from my PC and possibly do electronic imaging through
my telescope?
Five years ago, this question wouldn't have been worth asking,
because five years ago, CCD cameras were for the most part only used by
observatories and professionals. Today, CCD cameras take up a substantial
percentage of ad space in the astronomical magazines and are geared toward the
amateur astronomer. If you own a personal computer or are thinking about taking
the plunge soon, you may want to consider the idea of integrating your telescope
with your computer via software and/or a CCD camera system. While this type of
equipment is more expensive than other astronomical setups, it is still well
within the reach of a growing number of people AND it will give you instant
gratification as you see images you have taken with your CCD system coming up on
your computer terminal minutes after the shot was taken! This truly is a
wonderful time in history to be embracing the hobby of astronomy!
TOP
6) How much do I want
to spend?
It always comes down to this, doesn't it? Telescopes are available
in a very wide price range... from about $150 for a 60mm alt/az refractor with
tripod (telescopes can be assumed to come complete with tripod unless otherwise
stated) to $15,000+ for Meade Instrument's 16" computerized LX200! Luckily,
there are lots of choices in between those two numbers. In general, you can
figure the following (for a more complete list of product available, see our
Product Page:
- $150-$300 for 60mm refractors, either alt/az or equatorially mounted, and
some brands of 60mm zoom spotting scopes.
- $350-$750 for 80mm or 90mm refractors (alt/az or equatorially mounted), 4
1/2" reflectors on equatorial mounts, 620" Dobsonian-style reflectors, 6-8"
Equatorial reflectors, 3-5" Schmidt-type telescopes/spotting scopes without
tripod, and better 60mm zoom spotting scopes.
- $750-$1,000 for 12 1/2" Dobsonian-style reflectors, 10" Equatorial
reflector, or high-quality 70mm APO refractor.
- $1100 on up for 8" and higher Schmidt-Cassegrain or Maksutov telescopes;
refractors 4" in aperture or more, either alt/az or equatorially mounted; and
16" Reflectors, either Dobsonian or equatorially mounted.
- $2500 on up for an 8", 10", or 12" computerized Schmidt-Cassegrain with all
the bells and whistles.
Now that you have asked yourself
the above questions, and hopefully have answers to a few of them, it is time to
learn about the different telescope designs out on the market today. As you will
see, there is a design out there best suited for what you want to do most...
deciding just takes a little reading, soul-searching, and, in some cases,
compromising just a tad!
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