Manual
Tele Vue Dioptrx, Your Prescription for Better Viewing
When attached to any of the following long eye relief Tele
Vue eyepieces, DIOPTRX compensates for your eyesight
astigmatism. Most of these eyepieces have long eye relief
for eyeglass wearers, so simply adding DIOPTRX to
replace your eyeglasses should leave you with comfortable
eye relief. DIOPTRX corrects astigmatism only, since
focusing compensates for your power correction.
DIOPTRX
Astigmatism correction
Every DIOPTRX includes
a rubber eyeguard and
lens cover
Your eyeglass prescription should look
something like the example below. Your
DIOPTRX value should match the CYL
(cylinder) value for your preferred viewing eye.
If you require more than 3.5 diopters correction,
call Tele Vue (845-469-4551) for info on
“stacking” DIOPTRX
SPHERICAL
CYL
AXIS
O.D.
(Right eye)
XX
XX
XX
O.S.
(Left eye)
XX
XX
XX
product code
(in diopters)
DRX-0025
0.25
DRX-0050
0.50
DRX-0075
0.75
DRX-0100
1.00
DRX-0125
1.25
DRX-0150
1.50
DRX-0175
1.75
DRX-0200
2.00
DRX-0225
2.25
DRX-0250
2.50
DRX-0300
3.00
DRX-0350
3.50
Installation Instructions (Additional technical information is available on our website at: www.televue.com)
1) Pull off and save rubber eyeguard from eyepiece.
2) While holding lower engraved bottom ring of DIOPTRX with one hand, unscrew upper top ring (containing lens and rubber eyeguard) just enough so the assembly slips
over the eyepiece top.
3) While still holding the lower ring, re-tighten upper ring on DIOPTRX so it locks onto the eyepiece, then loosen it slightly so DIOPTRX is free to rotate. (Note: you can
leave it locked onto Radian and Nagler Type 4 eyepieces because rotation can be done using their “Instadjust” housing.)
4) Place the chart on the reverse of this page at a distance so you can view it through your telescope, using your DIOPTRX equipped eyepiece (or use an actual star field).
Focus at the center of the field and rotate DIOPTRX to optimize the astigmatism correction for the sharpest image you’ve ever seen. DIOPTRX is most effective with
large exit pupils. Hint for setting rotation: view a star slightly out of focus, and simply rotate DIOPTRX until star disc appears circular then focus normally.
5) Keep the lens cap on, and clean as necessary, just as you would clean any other multi-coated optical glass surface.
For information call 9 a.m. — 5 p.m. ET Monday through Friday: 845 469 4551 or visit www.TeleVue.com.
Copyright © 2006-11 Tele Vue Optics, Inc., 32 Elkay Dr., Chester, NY 10918. All rights reserved.
Rev: 8/14/2012 9:28 AM DIOPTRX
Tele Vue Dioptrx, Your Prescription for Better Viewing
When attached to any of the following long eye relief Tele
Vue eyepieces, DIOPTRX compensates for your eyesight
astigmatism. Most of these eyepieces have long eye relief
for eyeglass wearers, so simply adding DIOPTRX to
replace your eyeglasses should leave you with comfortable
eye relief. DIOPTRX corrects astigmatism only, since
focusing compensates for your power correction.
DIOPTRX
Astigmatism correction
Every DIOPTRX includes
a rubber eyeguard and
lens cover
Your eyeglass prescription should look
something like the example below. Your
DIOPTRX value should match the CYL
(cylinder) value for your preferred viewing eye.
If you require more than 3.5 diopters correction,
call Tele Vue (845-469-4551) for info on
“stacking” DIOPTRX
SPHERICAL
CYL
AXIS
O.D.
(Right eye)
XX
XX
XX
O.S.
(Left eye)
XX
XX
XX
product code
(in diopters)
DRX-0025
0.25
DRX-0050
0.50
DRX-0075
0.75
DRX-0100
1.00
DRX-0125
1.25
DRX-0150
1.50
DRX-0175
1.75
DRX-0200
2.00
DRX-0225
2.25
DRX-0250
2.50
DRX-0300
3.00
DRX-0350
3.50
Installation Instructions (Additional technical information is available on our website at: www.televue.com)
1) Pull off and save rubber eyeguard from eyepiece.
2) While holding lower engraved bottom ring of DIOPTRX with one hand, unscrew upper top ring (containing lens and rubber eyeguard) just enough so the assembly slips over the
eyepiece top.
3) While still holding the lower ring, re-tighten upper ring on DIOPTRX so it locks onto the eyepiece, then loosen it slightly so DIOPTRX is free to rotate. (Note: you can leave it
locked onto Radian and Nagler Type 4 eyepieces because rotation can be done using their “Instadjust” housing.)
4) Place the chart on the reverse of this page at a distance so you can view it through your telescope, using your DIOPTRX equipped eyepiece (or use an actual star field). Focus at
the center of the field and rotate DIOPTRX to optimize the astigmatism correction for the sharpest image you’ve ever seen. DIOPTRX is most effective with large exit pupils. Hint
for setting rotation: view a star slightly out of focus, and simply rotate DIOPTRX until star disc appears circular then focus normally.
5) Keep the lens cap on, and clean as necessary, just as you would clean any other multi-coated optical glass surface.
For information call 9 a.m. — 5 p.m. ET Monday through Friday: 845 469 4551 or visit www.TeleVue.com.
Copyright © 2006-11 Tele Vue Optics, Inc., 32 Elkay Dr., Chester, NY 10918. All rights reserved.
Delos all
Plössl 55, 40, 32mm
Radian all
Panoptic 41, 35, 27, 24*, 22, 19*mm
Nagler Type 4 all
Nagler Type 5 31, 26, 20*mm
Nagler Type 6 all*
Ethos all
*Indicated eyepieces require DEA or DNA adapters.
Delos all
Plössl 55, 40, 32mm
Radian all
Panoptic 41, 35, 27, 24*, 22, 19*mm
Nagler Type 4 all
Nagler Type 5 31, 26, 20*mm
Nagler Type 6 all*
Ethos all
*Indicated eyepieces require DEA or DNA adapters.