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  #1  
Old 31-08-2013, 11:05 PM
Hans Tucker (Hans)
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Vixen - Ultra Fast Astrograph

Has there been any discussion on IIS regarding the Vixen VSD

http://www.vixenoptics.com/refractors/VSD.html
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  #2  
Old 31-08-2013, 11:36 PM
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strongmanmike (Michael)
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Looks mighty impressive

Once upon a time, I used something similar - a Pentax 100EDUF (wasn't too crash hot really) but this Vixen looks to be in another league

Mike

Last edited by strongmanmike; 31-08-2013 at 11:48 PM.
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Old 01-09-2013, 12:49 AM
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h0ughy (David)
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now there is a tool!
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Old 01-09-2013, 01:11 AM
Wavytone
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Mm.....A spot size of 20 microns on axis... This is aimed squarely at full-frame bodies - and larger - with sensor pixel spacings 8-10 microns.

The price will be interesting, as I'm sure it will be a fraction of anything similar from canon/Nikon.

Not a great choice for APS-C or m4/3 bodies where the pixel spacing may be down around 4 microns.
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Old 01-09-2013, 08:54 AM
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LewisM
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Can't wait.Saving pennies now!

f/3.8 native, or f/3.0 reduced

Last edited by LewisM; 01-09-2013 at 09:17 AM.
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  #6  
Old 01-09-2013, 09:54 AM
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cometcatcher (Kevin)
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...Saving pennies now!....
Me thinks you'll need to be saving sovereigns rather than pennies, 1930 excluded.

Would make a nice wide field comet scope.
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Old 01-09-2013, 10:03 AM
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RobF (Rob)
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Is Vixen finally making an assault on the Tak FSQ fortress?
Any word on cost?
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  #8  
Old 01-09-2013, 10:07 AM
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It does look interesting. I guess it all comes to price as the Tak FSQ106ED has cemented itself firmly in astrophotography legend.

Greg.
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Old 01-09-2013, 10:14 AM
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RickS (Rick)
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Looks like a nice scope on paper. Will be interesting to see some comparisons with a FSQ-106 and reducer.
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Old 01-09-2013, 10:14 AM
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Quote:
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Me thinks you'll need to be saving sovereigns rather than pennies, 1930 excluded.

Would make a nice wide field comet scope.
I think pennies translates to gold plastic notes these days
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  #11  
Old 01-09-2013, 10:55 AM
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naskies (Dave)
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Ooh... very interesting. Can any optical engineers here explain why they compare its performance to a theoretical "4 elements in a 4 group lens design" scope? It sounds a bit like razor blade advertising (language warning)
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Old 01-09-2013, 12:18 PM
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I thought the same thing Dave. A bit of marketing BS. A 4 lens scope is a hidden reference to an FSQ106ED which has 2 ED elements at least and is the most successful scope ever.

Greg.
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Old 01-09-2013, 05:29 PM
clive milne
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This thread needs more turbo encabulator

https://www.youtube.com/watch?v=Ac7G...e_gdata_player
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  #14  
Old 02-09-2013, 09:29 AM
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Oh joy, a helical focuser.

Terry
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  #15  
Old 02-09-2013, 11:56 AM
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blink138 (Pat)
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any body want a guess at a price or ballpark figure?
pat
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  #16  
Old 02-09-2013, 03:34 PM
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$2000? It doesn't have ED glass in the objective only in the corrector.

Greg.
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  #17  
Old 02-09-2013, 03:40 PM
Dennis
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any body want a guess at a price or ballpark figure?
pat
I suspect that you wouldn’t walk away with much change from $3500?

Cheers

Dennis
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