[Raytrace] Yet More Oslo Questions

[Michael Lindner]

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OK, I'm starting to model eyepieces...starting with the Huygens eyepiece 
given on page 168 of R&V (1988 edition).

How does one specify that the focal plane (object) is to the right of the 
first surface? I tried setting the object thickness to a negative number, but 
the rays in the drawing now appear to stop at the second surface, and I think 
I've specified something wrong. I find nothing in the documentation or help 
about virtual objects or images....any clues? Thanks.

File is attached.

-- 
Michael Lindner
ATM Site http://www.atmsite.org        TM Web Ring 
http://www.crickrock.com/cgi-bin/webring/list.pl?ringid=TelescopeMaking
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// OSLO 6.1  1541     0 58671

LEN NEW "Huygenian Eyepiece f/5 flat" 0 6

EBR  20.0

ANG  0.1

DES  "OSLO"

UNI  1.0

// SRF 0

AIR 

TH   -49.53

AP  0.0864462456281

NXT  // SRF 1

GLA SK2       

RD   91.6

TH   16.8

AP CHK 20.0

NXT  // SRF 2

AIR 

TH   32.73

PK  AP  -1

NXT  // SRF 3

AIR 

TH   68.27

AP  10.0

AST 

NXT  // SRF 4

PK  GLA  -3

RD   45.8

TH   7.2

PK  AP  -3

NXT  // SRF 5

AIR 

PK  AP  -4

NXT  // SRF 6

AIR 

PK  AP  -5

AFO 1

CBK  1

AMO ANG 

WV 0.58756 0.48613 0.65627

WW 1.0 1.0 1.0

END  6

DLID 20.0

DLFD 20.0

DLRS 2

DLAS On

SDSA On


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