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Old 27-June-2003, 08:37 PM
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Glom Glom is online now
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Default Why my telescope is a CTS

It may be sad, but it's great fun spotting CTS (Christmas Trash Scope) evidence in telescopes. I've now turned my eye on my own CTS that I've had for a couple of years.

Tasco Galaxsee 375X
  • As you can see, it's a Tasco telescope.
  • It's advertised in terms of magnification.
  • It's 4½'' which means that its maximum practical magnification is only 225X.
  • It came with, surprise, H20mm and SR4mm eyepieces, but at least they're 1.25''.
  • It's mounted on an EQ-1 mount, when according to BAG, anything below an EQ-3 is too flimsy for a 4½''. So it's two levels too light.
  • It came with an all plastic 3X Barlow lens.
  • The finder is all plastic and stopped down, probably a 5X24 stopped down to 10mm as mentioned in BAG.
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Old 27-June-2003, 10:58 PM
Charlie in Dayton Charlie in Dayton is offline
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Default Re: Why my telescope is a CTS

Quote:
Originally Posted by Glom
...as mentioned in BAG...
BAG?
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Old 27-June-2003, 11:06 PM
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Default Re: Why my telescope is a CTS

Quote:
Originally Posted by Charlie in Dayton
BAG?
The Backyard Astronomer's Guide.
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Old 19-July-2003, 12:45 AM
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Another thing I've just thought of: the focal length is 500mm, which makes the focal ratio f4.3, far too fast to be of any decent quality.
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Old 19-July-2003, 12:54 AM
ChesleyFan ChesleyFan is offline
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A lot of telescopes are supplied with EQ-1 mounts, CTS or not. I'd suggest that, unless you're planning to do astrophotography, buy a good alt-az mount instead. They're cheaper and lighter.
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Old 19-July-2003, 01:06 AM
skyglow1 skyglow1 is offline
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I've seen a 60mm (2.5 inch) telescope advertrised with 540x magnification!

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