Canon 93518 Binoculars User Manual


 
10
Barlow lenses offer an easy, economical way to
increase the magnification range of your eyepieces,
and Celestron carries an assortment of these highly
useful lenses. A Barlow lens doubles the magnifying
power of your eyepiece by doubling its effective focal
length. For example, an 18mm eyepiece used with a
2x Barlow lens would have the magnifying power of
a 9mm eyepiece. It’s like having two eyepieces in
one!
If you’re looking for an affordable way to achieve
high-power viewing of the moon and planets, double
stars and even close-up views of terrestrial subjects, a
Barlow lens is the answer.
Barlow lenses mount into either your telescope’s focuser or visual back.
The Economy models of .96" and 1
1
/
4
" are good choices when you want to
expand your power ranges at a very economical price.
Celestron’s premium quality .96" and 1
1
/
4
" achromatic Barlow lenses (#93502
and #93507) are compact and lightweight. Both are under three inches long,
with the 1
1
/
4
" lens weighing in at 4 ounces and the .96" lens a mere 2 ounces!
The clear aperture is 27mm on the 1
1
/
4
" model, and 21mm on the .96" unit.
The .96" Barlow is fully multicoated and the 1
1
/
4
" lens is multicoated.
The Ultima
®
Series Barlow (2x – 1
1
/
4
") is an air-spaced, three element apochro-
matic design with a 27mm clear aperture. This lens features a very high
quality, fully multicoated design. Amazingly compact and lightweight, it’s
just 5 ounces and 2.75" in length.
2x Barlow Lens – Economy – .96" [93211]
2x Barlow Lens – Economy – 1
1
/
4
" [93213]
2x Barlow Lens – Deluxe – .96" [93502]
2x Barlow Lens – Deluxe – 1
1
/
4
" [93507]
2x Barlow Lens – Ultima
®
Series - 1
1
/
4
"
[93506]
Top: #93506, 93502, #93507
Bottom: #93213, #93211
Eyepiece
Focuser or
Visual Back
Barlow Lens
Option:
Diagonal
BARLOW LENSES