The Explore Scientific 77 mm Slim Dark-Sky filter is specially designed to enhance the photography of auroras and deep-sky objects, even in light-polluted environments. Thanks to its unique technology, this filter effectively blocks yellow light at 590 nm from sodium vapor lamps while allowing key wavelengths for capturing auroras (550 nm for green and 630 nm for red) to pass through. With its ultra-thin design of only 4 mm, this filter fits perfectly on wide-angle lenses without the risk of vignetting.

Features:

• Filter thread: 77 mm
• Blocks yellow light from sodium vapor lamps at 590 nm
• Transmits over 90% of the wavelengths 550 nm (green) and 630 nm (red)
• Designed for photographing auroras and deep-sky objects
• Reduces light pollution, ideal for urban photography
• Special optical glass finish with neodymium oxide
• Black anodized aluminum housing
• Ultra-thin height of 4 mm (Slim)

Benefits:

• Increases contrast and detail in aurora and nebula photographs
• Compatible with wide-angle lenses, without vignetting
• Improves red and green tones, which are difficult to correct in post-processing
• Ideal for landscape photography, the Milky Way, and natural night scenes
• Effectively blocks sources of light pollution, such as street lamps and greenhouses

Compatibility:

• Compatible with all camera lenses equipped with a 77 mm filter thread

The Explore Scientific 77 mm Slim Dark-Sky filter is the essential tool for astrophotographers and night landscape enthusiasts who want to capture sharp and natural images in a sky polluted by artificial light.