!file name: mods_red_v7glb.seq
!revised 11/14/00
!revised 01/10/01 changed rear radius of field lens to move stop image between grating
!and corrector. There is no penalty in the error function and the footprint on the camera
!mirror now agrees with the older values. 
!_____________________________________________________________________________________

!					MODS RED SPECTROGRAPH
!_____________________________________________________________________________________
!
!BK7 Camera with filter in place. The error function of this camera is 119 for a 4 arc
!minute slit height with the slit in the center of the field.
!
! All surfaces up to and including the grating are specified in global coordinates with
! respect to the vertex of the telescope focal surface.
RDM;LEN       "VERSION: 8.50       LENS VERSION: 50       Creation Date: 16-Oct-2000"
TITLE 'MODS_red_v7glb'
EPD   8408.0
DIM   M
WL    1022.22179954 893.167368547 764.112937554 636.504491195 508.896044836
REF   3
WTW   0 0 80 0 0
INI   'PLB'

! The field angles and vignetting factors are for a centered 4 arc-min high slit

XAN   -0.0333333333333 -0.0166666666667 0.0 0.0166666666667 0.0333333333333
YAN   0.0 0.0 0.0 0.0 0.0
WTF   1.0 1.0 1.0 1.0 1.0
!These are the vignetting factors for the secondary diameter above
VUY          0.01513       0.01515       0.01515       0.01515       0.01513
VLY          0.01513       0.01515       0.01515       0.01515       0.01513
VUX          0.01618       0.01568       0.01515       0.01459       0.01400
VLX          0.01400       0.01459       0.01515       0.01568       0.01618
!
SO    0.0 0.1e21
S     0.0 10663.69				!position of secondary
S     -19200.004 -10663.69 REFL		!telescope primary
  CON
  K   -1.0
  CIR OBS 444.5
  CUM 0.0; THM 750.0
S     1974.2416 10663.69 REFL			!telescope secondary
  STO
  CON
  K   -0.7328021
  CUM 0.0; THM 300.0
S     -19200.0 3049.33				!surface of primary
S     1014.0 0.0					!telescope focal surface
S     500.0 6.0 SILICA_SPECIAL		!front surface of field lens
	GLB G5
  XDE 0.0; YDE 0.0; ZDE 65
  ADE 0.0; BDE 0.0; CDE 0.0
S     521.0 269.0				!rear surface of field lens
S     0.0 0.0 REFL				!front surface of dichroic
	GLB G5
  XDE 0.0; YDE 0.0; ZDE 275		
  ADE 0.0; BDE 35.0; CDE 0.0
  CUM 0.0; THM 25.0
S     0.0 -310.0					!dummy surface to realign chief ray
  ADE 0.0; BDE 35.0; CDE 0.0
S     0.0 0.0 REFL				!fold mirror
	GLB G5
  XDE 291.3047; YDE 0.0; ZDE 168.9738
  ADE 0.0; BDE 32; CDE 0.0
  CUM 0.0; THM 30.0
S     0.0 0.0					!dummy surface to realign chief ray
  ADE 0.0; BDE -38.0; CDE 0.0
S     0.0 2870.644615				!dummy surface to locate vertex of collimator
  ADE -6.855431; BDE 0.0; CDE 0.0
S     -6900.0 0.0 REFL				!collimator mirror
	GLB G5
  XDE 589.2235; YDE -342.6532; ZDE 3003.4814
  ADE -5.7312; BDE -5.9702; CDE -0.5981
  CON
  K   -1.0
!  ADE 1.15543; BDE 0.0; CDE 0.0	
  REX EDG 206.0; REY EDG 206.0
  ADY EDG 314.0
  CUM 0.0; THM 100.0
S     0.0 -3600.0					!dummy surface to align chief ray
  XDE 0.0; YDE 343.502466; ZDE -8.55028528369
S     0.0 0.0 REFL				!location of grating (global coordinates)
  GRT
  K   0.0; IC Yes
  A   0.0; B 0.0; C 0.0; D 0.0
  GRO -1; GRS 0.0030303030303
  GRX 0.0; GRY 1.0; GRZ 0.0
  GLB G5
  XDE 217.45843; YDE 357.55118; ZDE -533.62667
  ADE 16.8872882382; BDE -5.74303787383; CDE 1.74001099192
  REX EDG 153.0; REY EDG 204.0
  CUM 0.0; THM 30.0
S     0.0 0.0
  GLB G5						!dummy surface at front of camera lens (global)
  XDE 286.05109; YDE 653.84151; ZDE 118.9889		!global position w.r.t. slit center
  ADE 24.4183; BDE -5.4667; CDE 2.4766
!
! __________________________________________________________________________________________

!				MODS RED CAMERA SECTION SEQUENTIAL FILE
!___________________________________________________________________________________________

! The first surface of each refractive surface is located globally with respect to the surface preceding the camera
! section (S16 above for the red camera)
!
S     1235.946 40.0 BK7_SCHOTT			!front of corrector lens
  XDE 220.0; YDE 0.0; ZDE 0.0
S     1283.338 1032.524					!rear (aspheric surface of corrector lens)
  ASP
  K   0.0
  IC  Yes; CUF 0.0
  A   0.153297630669e-9; B 0.760658037634e-16; C 0.150995730012e-21; D&
   -0.658170470821e-28
S     -1525.0 -684.969 REFL				!camera mirror
	GLB G16
	XDE 3.541; YDE 0.0; ZDE 1057.093
	ADE 0.0; BDE 8.159; CDE 0.0
	THM 80
!
S     0.0 -6.0 BK7_SCHOTT				!filter front
	GLB G16
	XDE 220; YDE 0.0; ZDE 387.555
!
S     0.0 -2.0						!filter rear
S     -260.778 -25.0 BK7_SCHOTT			!field flattener front
	GLB G16
	XDE 220; YDE 0.0; ZDE 379.555

!
S     0.0 -37.275						!field flattener rear
S    0.0 0.0						!focal surface
	GLB G16
	XDE 220; YDE 0.0; ZDE 317.28
SI

ZOO   5
ZOO   WTW W1 0 80 0 0 0
ZOO   WTW W2 0 0 80 0 0
ZOO   WTW W3 80 0 0 0 0
ZOO   WTW W4 0 0 0 80 0
ZOO   WTW W5 0 0 0 0 80
ZOO   REF 3 1 2 4 5
GO