Quote:
Originally Posted by brian nordstrom
 My GOD Lewis you never cease to amaze me with your words of wisdom mate , thank you again for showing us all the way  , I am humbled .
On the sky90 they 'Yanked ?' it , poor seller ? , after 10 years of production ? man I really thought the Japanese were a bit quicker than that  , thanks again for your wisdom , I am so humbled . |
You are welcome.
Quote:
Originally Posted by brian nordstrom
We ( all others) always thought the sky90 was put to pasture because of the new ( sic. cheap ) 100mm synthetic FC100D , FPL53 ? , scope ( ED100? copy ?  ) hoping to do a bit of catch up on sales after the Chinese take over , over the last 10 of so years , so good on them but I think the horse has bolted on this one. |
Replacing the Sky90 with an FC-100? Not even the same category - the Sky90 was a portable, "mini" design, the FC-100D is not so small, yet not heavy. Perhaps the relaunched FC-76
The FC100D has a FLUORITE rear element - it has no FPL53 glass. It is far from a ED100 copy - the FC100 has been around since 1981 (I have an original model FC100, serial 8111, making it most likely the 11th sample built). The Chinese copied the Japanese 4" DESIGNS - The Skywatcher ED100 is a copy of the Vixen ED102S.[/quote]
Quote:
Originally Posted by brian nordstrom
Any one know the Strehl of these new Tak's yet ? .
|
Older FC-100's have been tested to a large extent (though I could not find one from Wolfgang). The best Strehl I could find for one was 0.988. Wolfgang did compare older Vixen branded and a Tak branded Canon-Optron made fluorite lens cell to each other, showing the SAME overall Strehl - both 0.975