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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Orion express (1 Viewer)

On various forums they say it's supposed to be a copy of the William optics Zenithstar 80 although the Zenithsar had a nicer twin speed focuser. I used to have a Zenithstar and it showed a fair bit of blue CA in dark objects against bright backgrounds. It probably falls somewhere between an 80ED and a basic 80mm achromat as far as colour correction goes. It's a heavy scope for the focal length, about the same weight as a 600mm scope for example. OK but not ED quality.

Paul.
 
I would say you are better off with an 80/600ED doublet, as Paul mentions above. A lot of bang for the buck! Just make sure it has Ohara FPL-53 glass.
 
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