Beginners’ Guide to Telescopes |
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Pros & Cons |
Strengths and weaknesses of different mount types |
MOUNTS |
Strengths |
Weaknesses |
Alt-azimuth or altaz |
Very intuitive — simple and quick to set-up and use |
Harder to track objects to keep them in view |
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Generally quite portable |
Cheaper types may be flimsy and prone to vibration |
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Generally inexpensive |
May be unsuitable for astrophotography — can’t usually fit motor drive (except for ‘autotrak’ mounts or GO-TO types) |
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Dobsonian or Dob |
Lots of aperture for the money. |
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(Simple altaz stand with a Newtonian reflector) |
Can be robust and less prone to vibration |
Harder to track objects to keep them in view |
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Bulky and probably not lightweight |
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Can now buy ‘push-to’ Dobs with target guidance display on hand controller |
‘Push-tos’ require careful alignment on set-up |
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Can’t fit motor drive. Unsuitable for astrophotography |
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Equatorial Mount or EQ |
Easier to track targets and keep them in view |
More complicated to set up — polar alignment required |
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Can be motorised for automatic tracking |
More expensive than an alt-az. |
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Most suitable for astrophotography |
Cheaper models may be flimsy. Better quality models can be heavy (and much more expensive) |
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Telescope eye-piece, finder, and controls can get into a difficult position to use as you track across the sky during a session |
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GO-TO Mount |
Easy to use once set-up. Automatically finds and tracks objects in its database |
Set up can be tricky. Requires careful alignment (polar alignment and adjustment on reference stars) except in GPS/auto-align types (more expensive still) |
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Available with built-in GPS/auto alignment systems (at a price) |
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Very portable with smaller telescopes |
More expensive |