Rear cell filters

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Accessories / Filters / Rear cell filters
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Rear cell filters
These filters consist of a #1A (pink) skylight filter in a metal cell that threads onto the rear cell of Celestron and Meade catadioptric telescopes. By sealing the Cassegrain focus at the rear of the telescope, they keep dust and airborne contaminants out of the telescope optical tubes during use and storage. They can be left in place permanently, but have a 14% light loss that can affect deep sky viewing. In astronomy, they visually increase contrast and decrease glare in lunar and planetary observing, although there will be a slight loss of resolution at high magnifications. Terrestrially, they are useful for visually and photographically reducing the effects of atmospheric haze in long distance observing. They reduce the blue cast in scenic photos to subjectively reduce the apparent aerial haze and reveal more detail in distant shots.

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#1A skylight filter/rear cell dust seal for Schmidt-Cassegrains
 
Celestron - #1A skylight filter/rear cell dust seal for Schmidt-Cassegrains 
Our Product #:  3632
Celestron #: 93621

In Stock: Usually ships within one business day.
This 34mm clear aperture filter threads onto the rear cell of all Celestron 5" to 14" Schmidt-Cassegrain telescopes . . .

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$37.95
List Price: $40.95



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#1A skylight filter/rear cell dust seal for Schmidt-Cassegrains
 
Meade - #1A skylight filter/rear cell dust seal for Schmidt-Cassegrains 
Our Product #:  3680
Meade #: 07288

In Stock: Usually ships within one business day.
This 36mm clear aperture filter threads onto the rear cell of all Meade 8" to 16" Schmidt-Cassegrain telescopes, . . .

[ More details . . . ] 
$49.95
List Price: $99.00



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