Filters


The BEST Moon Filter because

it has adjustable brightness.

Available in standard 1.25" and 2" models





Variable Polarizing Moon Filter fits all threaded 1.25" Eyepieces


  • Variable polarizing filter acts like a dimmer switch for your telescope, to tone down brightness
  • Reduced brightness and glare unmasks detail in your viewing subject and greatly improves contrast
  • Adjust the amount of light transmission from 1% to 40%
  • The filter has an anodized aluminum cell, which threads into the barrel of any standard eyepiece
  • Storage case included. 1.25"

$37.95 (+$5 Shipping) (1.25")



$64.95 ($5 Shipping) (2")





Moon too bright? These filters will make lunar viewing a pleasure!



25% Moon Filter

$19.95 (Free Shipping)



13% Moon Filter (Darker than the the 25%)


The Moon's disk, even at partial phases, is intensely bright with reflected sunlight. The glare washes out most of the craters, rilles, and other surface details from view.


Orion's Moon Filter reduces the glare, allowing transmission of only 13% of the reflected light. Not only will you see more surface features, but you can study them in greater comfort. This telescope filter reduces irradiation, which is the distortion at the boundary between light and dark areas, such as along the lunar terminator.


The 1.25" Orion 13% Transmission Telescope Moon Filter is especially useful to owners of large-aperture telescopes, in which the Moon's brightness can be overwhelming. It uniformly reduces light over the entire visible spectrum. Screws into threaded telescope eyepiece barrel.


13% Moon Filter

$19.95 (Free Shipping)




O-III Filter


This filter will greatly enhance nebulae. The Veil Nebula is particularly spectacular when using this O-III filter. Comparing this filter to others, I've found it outperforms the competition!


  • Reveals more wondrous details when viewing nebulas
  • Transmits close to 90% of the light corresponding to 2 oxygen-III spectral lines at 496nm and 501nm
  • Completely blocks virtually all other visible wavelengths
  • Features highest quality optical glass in a double-threaded, anodized aluminum cell.



1.25" O-III Nebulae Filter

$105.95 (Free Shipping)



Same as above but in 2" to go with the Q70 Eyepieces OR this will thread onto your 2" Diagonal and may be used with the 1.25" adapter in place.


2" OIII Filter

$121.50 ($5 Shipping)


UltraBlock Narrowband Filter, 1.25"


  • The UltraBlock is the filter for deep-sky observers located at highly light-polluted sites
  • Blocks all forms of light pollution
  • Enhances the sky presence of a significant number of fainter deep-sky objects
  • 1.25" filter
  •  


If you've got light pollution and want to see nebulae---start with this filter. It will greatly enhance nebulae.  See the Veil or M57 in far greater detail! See deep into the Great Orion Nebula!


1.25" Ultra Block Nebulae Filter

$94.95 (Free Shipping)