1.25 Inch Telescope Light Pollution Filter

Description

An astronomical light pollution filter designed to screw directly into standard 1.25-inch telescope eyepieces or camera adapters. Engineered to selectively block common wavelengths of artificial urban light—such as mercury and sodium vapor lamps—while enhancing contrast for deep-sky nebulae and galaxies.

Note: Photographs showing the filter being held are provided for reference only to demonstrate glass coatings and transparency.

Condition

Overall Condition: Near Mint

Cosmetically in near mint pre-owned condition with clean threaded metal cell housing, crisp engraved lettering, and pristine optical glass coatings.

Included

• 1.25-Inch Telescope Light Pollution Filter
• Protective Storage Case

Key Features

• Broadband light pollution reduction coating suppressing unwanted artificial skyglow
• Improves visual and photographic contrast when observing deep-sky objects from suburban or light-polluted locations
• Standard 1.25-inch filter thread compatible with most astronomical eyepieces and camera T-adapters
• Precision metal cell housing with secure, clean filter threads

Collector's Notes

A light pollution filter is an indispensable accessory for urban and suburban astronomers, allowing for much clearer views and deeper astrophotography exposures by darkening the background night sky.

Keywords

Telescope Light Pollution Filter, 1.25 inch Astronomy Filter, Skyglow Filter, Deep Sky Filter, Urban Astronomy Accessory