Canon 93517 - Manual (Page 7)

7
Plössl Eyepieces: .96" and 1 1 /
4
"
In a recent Sky and Telescope review, Celestron’s .96"
and 1
1 /
4
" Plössl eyepieces were rated as top ranking,
and found to outperform many similar, but more
expensive eyepieces. An exceptional value!
Celestron offers these premium eyepieces at
affordable prices, yet they’re among the best
designed and corrected eyepieces available. They’re
multicoated for enhanced contrast and all of the
1
1 /
4
" models are threaded to accept Celestron
colored eyepiece filters.
Focal Length Item # .96" Item # 1 1 /
4
" Eye Relief Apparent Field
6.3mm 93384 93338 5mm 52°
7.5mm 93380 93339 5mm 52°
10mm 93381 93340 7mm 52°
12.5mm 93385 93341 8mm 52°
17mm 93382 93342 13mm 52°
20mm 93343 15mm 52°
26mm 93383 93344 22mm 50°
32mm 93345 22mm 52°
40mm 93346 31mm 46°
Ultima ® Eyepieces: 1 1 /
4
"
These are Celestron’s top of the line eyepieces, utilizing
a hybrid design of five elements. They feature long eye
relief and a wide field, and each air-to-glass surface is
fully multicoated to enhance contrast levels. These
special eyepieces are computer designed to keep visual
aberrations to an absolute minimum. They virtually
eliminate the following aberrations: spherical, color,
field curvature, coma, astigmatism, distortion and spherical distortion of the
exit pupil. The inside surfaces and edges of all lenses are blackened, to keep out
reflected light. Outside surfaces are flat black, with rubber grips for secure
handling. Rubber eyecups are included both for comfortable use and to keep
out extraneous light. Threaded barrels accept Celestron thread-in filters. Lens
and barrel caps are included for safe storage.
Focal Length Item # Eye Relief Apparent Field
5mm 93350 4mm 50°
7.5mm 93351 5mm 51°
12.5mm 93352 9mm 51°
18mm 93353 13mm 51°
24mm 93354 18mm 51°
30mm 93349 21mm 50°
35mm 93355 25mm 49°
42mm 93356 32mm 36°
Recently, Sky &
Telescope reviewed
Celestron’s Ultima ®
eyepieces and rated
them best in their
class, with greater
contrast and image
sharpness than the
competitive models
of other
manufacturers.