We are away at Winterfest Star Party at Kelling Heath
Small items will continue to be dispatched while we are away. Larger items will be dispatched after our return on the 12th of November 2018

Thousand Oaks Optical 2" LP-4 H-beta HB Horsehead Filter

Brand: Thousand Oaks | Product Code: Thousand Oaks Optical H-beta 2inch | Availability: In Stock
Price: £150.00
Qty:     - OR -   Add to Wish List
Thousand Oaks Optical 2" LP-4 H-beta HB Horsehead Filter
Thousand Oaks Optical 2" LP-4 H-beta HB Horsehead Filter

Description

In very nice clean condition and very sort after

Also known as the Horsehead Nebula filter, the Lumicon 1.25" Hydrogen-Beta Filter isolates only the hydrogen-beta line of the spectrum (486nm) in a narrow pass-band just 9 nm wide, providing maximum contrast. Now you can view extremely faint nebulous objects such as the Horsehead, Cocoon and California Nebulae. In many cases, the Lumicon Hydrogen-Beta Filter is the ONLY way to view these objects. Recommended for 8" or larger telescopes.

To ensure that your Lumicon filter remains the World's Best, the strictest quality control standards are employed throughout the production process. Each Lumicon Hydrogen - Beta Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the H-Beta emission line.