2" Variable Polarizing Filter by Explore Scientific suitable for detailed lunar observations.

• Barrel Diameter: 2"
• Adjustable: Continuous brightness adjustment of the image.
• Effective for reducing strong contrast differences in various observed objects.
• Suitable for observations of the moon and planets, as well as solar observations.
• Protects against loss of detail.
• Warning! Solar observations only with an appropriate solar filter.
• Reduces the brightness of the observed object to a comfortable level.
• Adjustment Range: 40% to 1% light transmission with a neutral gray filter.
• Easy Operation: Adjust the desired filtering level by rotating both ends of the housing.
• 2.0" Filter Thread: on both sides (female/male) for simultaneous use of additional color filters.

Features:

• Variable degree polarizing filter
• Made from high-quality optical glass
• Black anodized aluminum housing

Specifications:

• Type: variable
• Optical material: optical glass
• Body: aluminum
• Eyepiece barrel diameter: 2” (50.8 mm)
• Light transmission range, %: 1–40