Gray filter 2'' ND-09 from Explore Scientific is designed to uniformly attenuate light and enhance contrast during your lunar observations. With a density of 0.9 (13% transmission), it allows you to reveal details often hidden by excessive brightness. This filter is particularly useful for observing the moon with any telescope and can be combined with other color filters on larger instruments. It is also ideal for close binary star systems, where the brightness of one of the stars can obscure the other.

Features:

• Diameter: 2''
• Density: 0.9 (13% transmission)
• Uniform light reduction across the entire spectrum
• Ideal for lunar and binary star observations
• Compatible with other color filters

Advantages:

• Enhances contrast by reducing excessive brightness
• Allows for more comfortable observation of lunar details
• Versatile and compatible with many telescopes
• Comes with a dust-proof case for secure storage

Compatibility:

• Compatible with all telescopes accepting 2'' filters

Give yourself a better lunar observing experience with the gray ND-09 filter from Explore Scientific, perfect for revealing hidden details and enhancing the visibility of celestial objects.