This is the lens cleaner we use here and recommend. We find it cleans quickly and efficiently and does not do damage other surfaces as Acetone can. Safe for all Stellarvue optics and very easy to use. This is the four ounce spray bottle version for those who prefer to spray a mist on a lens tissue. Always spray on the tissue or kimwipe, never spray directly on the optic itself. For cleaning eyepieces with cotton swabs we recommend the dropper bottle.
Note: Before cleaning any optical surface use a brush and bulb blower to remove all loose particles of dust. Cleaning any optic with any dust and debris on it can scratch lenses.