[ATM] prescription for a lurie houghton

[Guy Brandenburg <gfbrandenburg@yahoo.com>]

Does anybody care to tell me what you think about this
prescription for an 8 inch, f/5 Lurie-Houghton
telescope? Would it be any good for both visual and
photographic uses?

 Field angle: 1.05 degrees
 entrance beam radius: 98 mm
 
 (all distances in mm)
 surface 1
 roc 1670
 thickness 22.0
 aperture radius 101
 material BK7
 
 surface 2
 roc -23526
 thickness 6.5
 aperture radius 101
 material air
 
 surface 3
 roc -1670
 thickness 14.0
 aperture radius 101
 material BK7
 
 surface 4
 roc 23526
 thickness 0
 aperture radius 101
 material air
 
 surface 5
 roc 0
 thickness 889
 aperture radius 27 /* is this an error? */
 material air
 
 surface 6
 roc -2032
 thickness -839
 aperture radius 101.6
 material mirror
 
 surface 7
 roc 0.0
 thickness 174.8
 aperture radius 27
 material mirrror
 
 Guy Brandenburg
 
Washington,
DC
http://home.earthlink.net/~gfbranden/GFB_Home_Page.html
 


=====
Guy  BrandenburgWashington, DChttp://home.earthlink.net/~gfbranden/GFB_Home_Page.html
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