Explore Scientific 2" 0.9 Neutral Density Filter 13% Transmission

• 2" Diameter Filter
• Works best in 6-8 inch telescopes
• Get more out of your lunar observing

This Explore Scientific ND9 neutral gray filter reduces the brightness and glare that can mask low contrast details during lunar and planetary visual observing. It does so without affecting the natural colors of the solar system object being observed. It can also be very effective when used with some webcam and DSI-type cameras to reduce the brightness of the Moon to keep from saturating the imaging detector during lunar photography. The ND9 filter may also be employed in the splitting of close double stars where one of the binary pair significantly exceeds the other in brightness.

The filter is mounted in a standard 2" threaded cell. It will thread into the barrel of any 2" eyepiece or into the 2" nosepiece of webcams, DSI-type cameras, or CCD cameras or filter wheels that accepts 2" filters. The filter comes in a hard plastic protective case.

Due to its low 13% light transmission, it works best with scopes 6"-8" and larger.