Re: [ATM] oslo edu secondary mirror data input question

[David Janello <djanello@yahoo.com>]

Hi Michael,

Thanks again for the successful help on the data
input, may I ask a follow up question?

I am trying to view the spot diagrams over a 1 degree
field of view but the spot diagram screen shows only a
field of view of close to zero (5.72 e-05 to be
exact). I googled on the web and found a few similar
examples that worked but I couldn't see how they did
it.

I eventually want to optimize the design using
aspheric surfaces on the R1 and primary to minimize
the spot size to the edge of the field, any advice on
setting up the OSLO optimizer for aspherics would be
most appreciated.  

Thanks, 

Dave

Note: I had to tweak the file so that it would ray
trace correctly, here is what I am using right now:


// OSLO 6.4 33090     0 50466
LEN NEW "No name" 20.799 5
EBR  2.635
ANG  0.0000572957795
DES  "OSLO"
UNI  25.4
// SRF 0
AIR 
TH   1.0e+20
AP  9.9999999977e+13
NXT  // SRF 1
GLA N-BK7     
RD   -7.529
TH   0.475
AP  2.625
NXT  // SRF 2
AIR 
RD   -7.794
TH   18.5
AP  2.8
NXT  // SRF 3
RFH 
RD   -42.39
TH   -16.1
AP  3.0
CC   -0.03
NXT  // SRF 4
RFH 
PY   0.0
AP  1.1
DT   1
TLA  45.0
BEN
NXT  // SRF 5
AIR 
CBK  1
AMO ANG 
RAIM Enp
WV 0.58756 0.48613 0.65627
WW 1.0 1.0 1.0
END  5
DLRS 3


--- Michael Lindner <mikell@optonline.net> wrote:

> David Janello wrote:
> > Greetings,
> > 
> > I'm trying to input specs for a mak-newt design
> into
> > oslo edu and the ray trace stops at the secondary
> > mirror and does not reflect back to the image
> plane.
> > 
> > Spent a couple of hours going through the docs but
> > didn't find any examples on how to set up the
> > secondary mirror.
> > 
> > Was hoping someone on the list would have an
> example
> > for how to do this. I inputted the same design
> into
> > ATMOS with no problem but OSLO seems a bit
> tricker.
> 
> Here's a file. Several things you have to do. Select
> "Lens" and "Lens 
> Drawing Conditions", and change the box "Final dist"
> to "Draw rays to 
> image surface".
> 
> Next, get rid of surface 5 - it's not needed.
> 
> Next set the thickness of Surface 4 to "Solves"
> "Axial ray height" "0".
> 
> Next set the coordinates on surface 4 to "TLB" "0"
> (instead of 45, only 
> TLA should be tilted to 45 degrees), and set "Tilt
> and bend" to "Yes".
> 
> The result is below.
> 
> Clear skies.
> -- 
> Michael Lindner
> http://www.starastronomy.org ***
> http://home.att.net/~mikel
> http://www.atmsite.org *** http://www.atmlist.net
> 
> // OSLO 6.1 47857     0 50466
> LEN NEW "No name" 20.799 5
> EBR  1.0
> ANG  0.0000572957795
> DES  "OSLO"
> UNI  25.4
> // SRF 0
> AIR
> RD   2.65
> TH   1.0e+20
> AP  9.9999999977e+13
> NXT  // SRF 1
> GLA N-BK7
> RD   -7.529
> TH   0.475
> AP  2.625
> NXT  // SRF 2
> AIR
> RD   -7.794
> TH   18.5
> AP  2.8
> NXT  // SRF 3
> RFH
> RD   -42.39
> TH   -16.1
> AP  3.0
> NXT  // SRF 4
> RFH
> PY   0.0
> DT   1
> TLA  45.0
> BEN
> NXT  // SRF 5
> AIR
> CBK  1
> WV 0.58756 0.48613 0.65627
> WW 1.0 1.0 1.0
> END  5
> DLRS 3
> 



 
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