Optec, Inc.
NextGEN WideField 0.50X
(click on number to see full size image)
NextGEN
WideField 0.50X
Celestron C-11 telescope mounted on a Software Bisque
Paramount ME
SBIG ST-10XME with KAF 3200 Class 2 CCD
TCF-S focuser
IFW filter wheel
Images by Sidney Scott Sober
Ray Tracing
The optical design of the NextGEN 0.50X was done
with Zemax and optimized for four field points using wavelengths of
450, 550 and 650 nm. The goal was for the smallest blur diameters
for the four field points. The system was modeled using the actual
optical prescription for a SCT with the inherit aberrations of this
telescope. The resulting lens curvatures of this designed were made
without adjusting the radii to the optical lab's tool list. Custom
tools were made for all surfaces.
Click
here to see spot
diagram
Click
here to see encircled energy diagram
Click
here to see ray trace diagram
Click
here to see field
curvature diagram
Click
here for a glossary
of terms used in the diagrams
M13 globular cluster with NextGEN WideField 0.50X
SBIG ST-10XE with KAF-3200E Class 2 CCD
IFW FilterWheel
Celestron 14" Schmidt Cassegrain f/11 OTA
Software Bisque Paramount ME
Image by Paul Howell
NextGEN
Navigator
photos used with permission
Image by Michael Sidonio
NGC 2997 galaxy with NextGEN WideField 0.50X
SXV-H9
True Tech Narrow filter wheel
Meade LX200 12" GPS
Other
images taken with the NextGEN 0.5X can be seen in
the Anacortes Gallery. Click
here to link to these images.
