Vixen ED114SS


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Brand and Model:Vixen ED114SS
Price ($USD):$2444
Type:Apochromatic Refractor
Attributes: un-checked Go-To un-checked PEC
Aperture:114mm (4.5")
f Ratio:f/5.3
Focal Length:604mm
Finder:7*50
Electric Power:none
Mount:OTA only
Tripod:Aluminum
Weight (lbs):9 lbs.
Dimensions (w/h/d):585mm/140mm
Description:

Vote Highlights Vote
Vixen ED114SS
No ED-doublet refractor should ever be called "apochromatic"! Not even the fluorite-doublets are! True apochromatic refractors are of true triplet or quadruplet design - which for example excludes doublets with additional field flattener lenses...

Overall Rating: No Vote
Weight: <none>
Date:
By: Anonymous (xxx.xxx.134.49)
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=40113

>No ED-doublet refractor should ever be called "apochromatic"! Not even the fluorite-doublets are! True apochromatic refractors are of true triplet or quadruplet design  -  which for example excludes doublets with additional field flattener lenses...

The above is a political statement more than a rating of the product. With modern glass and lens design it is possible to build an APO in a doublet configuration. The ED114SS review in S&T (5/02) called it an APO and compared it to other APO scopes. 

Some quotes from the article:

"Jupiter looked neutral white when sharply focused, with no surrounding halo of blue light, remarkable for such a fast-foca-ratio refractor."

"Bright 1st-magnitude stars appeared clean white, with no halos from chromatic aberration."

This is not a fluke, many Tele Vue scopes are doublet APOs also.
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