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highfnum
Carpal Tunnel
Reged: 09/06/06
Loc: NE USA
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Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope
[Re: Joe Lalumia]
#3507320 - 12/17/09 06:51 PM
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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
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Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope
[Re: highfnum]
#3508564 - 12/18/09 11:57 AM
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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
Reged: 03/09/07
Loc: Irving, Tx
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Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope
[Re: Mike Loffland]
#5518915 - 11/13/12 11:37 PM
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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
Reged: 04/19/04
Loc: southeastern Nebraska
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Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope
[Re: Mark Swanson]
#5518968 - 11/14/12 12:53 AM
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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
Vendor(Clear Edge Optical)
Reged: 10/20/07
Loc: NW Iowa BURRRR
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Re: Criterion Dynamax 8 Schmidt Cassegrain Telescope
[Re: highfnum]
#5548505 - 12/01/12 09:59 AM
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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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