Yes Neil it is hard to say. Takahashi has been saying for years that fluorite is superior to everything else. I have not looked through enough other types of...
Hi Jeff, Here is a web definition for image circle: "The diameter of the image formed by a lens; determines the largest film or video format a lens can fill." ...
The big red letters on the lens shade which will be in bright red read FSQ-106ED, this is the new "Q". FSQ= Flat field super-apochromat. That is it. art...
I'm sure that the matching of the proper glass types with one another is extremely critical but I've become a quasi convert to fluorite scopes. Having owned...
A question for all of you LE eyepiece enthusiasts: What eyepiece(s) are you using to cover the somewhat large mag/FOV gap between the 7.5mm LE and the 12.5mm...
Hello, I'm just a new uncensored Takahashi Group member; I currently own my first Taka OTA, a beautiful FS102NSV and I'm waiting for a new CNC machined set of...
Pythagoras to the rescue! The diagonal is the square root of 2 times the dimension of one side (38 mm). This comes to 53.7 mm. Regards, Greg Hartke Sykesville,...
Wow, thanks for that Charlie. Its good to hear some hard won know- how. I think so to. You look into that fluorite lens and it kind of disappears. The recent...
You may be thinking of a DSLR imaging chip. They often have a diagonal of about 42.5mm (Canon EOS series, APS sized). No doubt the reducer is designed for APS...
Welcome Stefano! I am sure you will love your new FS-102NSV. My first Tak was the FS-102 and I still have wonderful memories of that scope. I was lucky enough...
Hi Mike I had the Pentax XW-10 in order to fill the gap, but I found myself using the XW-14 more frequently to observe deep sky with my FS-128 so I sold it...
Folks: Sorry if this question has been dealt with before, but I'm having trouble getting my guider cameras to guide my Tak NJP and EM-10 mounts without seeming...
1) Try setting the correction speed at .5 X 2) Make sure that you are getting a good calibration. I like to see the star move around 1/4 of the guide chip...
Thanks for all the info. I am on the waiting list for the new fsq and am just dreaming about my next camera. I have a st10xe which I feel will be a good match...
Tim, I use an NJP 350X Temma 2 and The Sky V6.0 with the Chuck Faranda driver. I autoguide using CCDSoft and the internal guide chip of my Sbig camera. Chuck's...
Math is easy but keep me away from the equipment! I don't think I mentioned this here but a week or so ago, I fried the focuser on my BRC-250 when I ...
Hi Greg H, There must be something wrong with Pythagoras, you wrote quote "The diagonal is the square root of 2 times the dimension of one side (38 mm)." quote...
Math refresher on the Pythagorean Theorem used to solve for the diagonal of a rectangle (actual theorem applies to a right triangle) diagonal squared = height...
Yes you are right Rainer. KAI11000 chip is 36mm x 24.7. So squaring them becomes 1296 + 610.09= 1906.09 Square root of 1906.09 = 43.66mm so 44mm gives you a...
But in the case of a square, height = width, so, applying some algebra: d = sqrt(a^2 + a^2) d = sqrt(2 * a^2) d = sqrt(2) * sqrt(a^2) d = sqrt(2) * a Where 'd'...
Oh Jeez Ron, was that really necessary!!?? :>) Greg. ... side ... case for ... rules ... http://www.wtamu.edu/academic/anns/mps/math/mathlab/int_algebra/int_a ...
Is the Sky 90 OTA still being offered at $1995 with a Tenba case? I didn't see this price listed on ATWB or Astronomics' sites. Is the promo over? Chris...
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