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highfnum
Carpal Tunnel
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Reged: 09/06/06

Loc: NE USA
Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope new [Re: Joe Lalumia]
      #3507320 - 12/17/09 06:51 PM

Its hard to make a general statement on a telescope brand based on one copy - too small a sample, SCT's made in 1970's varied alot -- some very good , some OK, some bad-- based on the one copy I used its "average"

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Darenwh
Carpal Tunnel


Reged: 05/11/06

Loc: Covington, GA
Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope new [Re: highfnum]
      #3508564 - 12/18/09 11:57 AM

One really good thing for that scope. Golden tripod is, IMHO, still the nicest looking OEM tripod out there ever offered with an SCT.

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Mark Swanson
member
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Reged: 03/09/07

Loc: Irving, Tx
Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope new [Re: mloffland]
      #5518915 - 11/13/12 11:37 PM

This review should be taken down. It is not credible. You cannot tell if a SCT is collimated just by looking into the back of the scope. You have to have a star image that is defocused at moderate to high magnification to accurately check collimation. This is just a hit piece.

Mark Swanson


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David Knisely
Postmaster
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Reged: 04/19/04

Loc: southeastern Nebraska
Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope new [Re: Mark Swanson]
      #5518968 - 11/14/12 12:53 AM

Quote:

This review should be taken down. It is not credible. You cannot tell if a SCT is collimated just by looking into the back of the scope. You have to have a star image that is defocused at moderate to high magnification to accurately check collimation. This is just a hit piece.

Mark Swanson




Agreed. This was more of a rant than a "review", and does the Dynamax 8 something of an injustice. It provides little to back up its statements, and is too short and slanted to be of much use. As I said, the Dynamax quality control varied somewhat, but the 8 inch units I used were at least passable, although again, not the best (but the same could be said of some C8's at the time). Clear skies to you.


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orion61

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Reged: 10/20/07

Loc: Birthplace James T Kirk
Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope new [Re: highfnum]
      #5548505 - 12/01/12 09:59 AM

Quote:

I almost forgot I did a face off between aC 9.25 and Dynaax 8 -- Idid in IR to reduce effect of seeing
here is results
c925
http://www.cloudynights.com/photopost/showphoto.php?photo=20004


dynamax 8

http://www.cloudynights.com/photopost/showphoto.php?photo=20003


c925 put it to bed --BUT dynamax image is not that BAD



That Dynamax image isn't bad at all. Your compairing a smaller scope made before computer controll, not to mention the 9.25 has a slightly different optical configuration (slower Primary)
Compair the performance of a 1976 Vega to a new car.
I have a Dynamax 6" SCT the DX6 that has superb optics!
even compaired to my NexStar C6 SCT. the C6 is brighter
but not sharper.


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cloudynight
member


Reged: 12/20/11

Loc: Florida
Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope [Re: Joe Lalumia]
      #6347547 - 01/31/14 04:29 PM

http://www.uglyhedgehog.com/t-181903-1.html#3086889

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