[ATM] 150mm Trischiefspiegler

["Greg Jones" <gregj888@comcast.net>]

Inspected my 6" primary last night in preparation for polishing and found a string of small white "pocks".   Yep, ground through some small bubbles I didn't know were there.  Back to #60 grit....  This came from a stash of generated f/6 blanks and didn't even think to look, oh well... 

I've decided on a Trischiefspliegler and was on RC for the f/14.8.  May move to the f/19 now but like the smaller size for star parties.

Below are winspot files for both.  I don't claim these are optimized, in fact am quite sure they are not, but think they are pretty close.  It's a place to start should someone else want to.


Greg Jones
http://home.comcast.net/~dac20/dac_001.htm

________150mm  f/14.8 Based on Al Woods TM #16_______

WinSpot V0.93b                       Tri-schif-6AW

 3 surface design

 Type         Radius        CC/Rsag       Tilt          Separation

 0             3129.99       0.53          5.1           781
 0            -4588.8        0            -15.299        486.1
 0             25324         0            -35.215        667.1874
 0             0             0             8.726035     focal plane

 Aperture 150 mm         Field 0.2 Degrees     f/15.02

************************************************************************
____150mm f/19.5  based on Rutten/Venrooij (200mm)_____

WinSpot V0.93b                       Tri-schi6-RV

 3 surface design

 Type         Radius        CC/Rsag       Tilt          Separation

 0             4065          0.53          5.117         1012.5
 0            -5950.25       0            -15.21         645
 0             32735         0            -34.99         858.914
 0             0             0             8.698577     focal plane

 Aperture 150 mm         Field 0.2 Degrees     f/19.54
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