Ultrablock Narrowband Filter 1.25" Telescope and Observatory: DurangoSkies.com

Ultrablock Narrowband Filter 1.25"	$79.95
[5654]	In Stock

Dramatically Improves Views of Emission and Planetary Nebulas

The UltraBlock is the filter for deep-sky observers located at highly light-polluted sites. Blocks all forms of light pollution - mercury vapor and sodium emission bands - while passing the critical hydrogen-beta and ionized oxygen wavelengths. With an UltraBlock, emission and planetary nebulas "surface" from the washed out background sky. In dark skies, the UltraBlock also enhances the sky presence of a significant number of fainter deep-sky objects over unfiltered and wideband-filtered views. Available in 1.25" and 2"and as a thread-on for rear cells of Schmidt-Cassegrains.

Customers who bought this product also purchased

Orion Oxygen-III Nebula Filter 1.25"	# 80A Blue 1.25"	# 25 Red 1.25"
# 15 Dark Yellow 1.25"	# 58 Dark Green 1.25"