|Brand and Model:||Parks Color Photo-Visual Filters|
| Visual Back
|| Full Aperture
|Description:||Parks’ Photo-Visual Color Filters are extremely useful for increasing contrast and resolution of lunar and planetary detail. They are made of the finest quality Hoya glass with 26 mm of clear aperture, and magnesium fluoride overcoated for maximum transmission and image brightness. All filters are threaded on both ends for use|
with 1¼" eyepieces and to allow stacking in a piggyback fashion. They are the best available.