Cloud Break Optics

2" O-III Nebula Filter (310200)

2" O-III Nebula Filter (310200) - Main image
2" O-III Nebula Filter (310200) - View 2
$96.59 $139.99 In stock

Category: Filters

Description

Oxygen III - This is the highest contrast Nebula Filter in the series, a line filter for only the two emission lines of oxygen. A great choice for observations of supernova remnants and other nebulae that glow in OIII. Other types of objects that glow in all parts of the visible spectrum (e.g. galaxies) are reduced visibly, but some normally invisible regions of nebulae are clearly visible. This filter fits all standard 2.0-inch eyepieces and filter wheels. 

Specifications

Fits 2" Eyepiece 

Range from 483nm to 511nm with peak at 496nm.

Transmission: 96.7%

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Customer Reviews (5.0 / 5 · 5 reviews)

Lucy ★★★★★

I used this filter on a faint supernova remnant last night, and the contrast boost was dramatic—the two oxygen lines really made the structure pop. Even with my 8-inch scope, the view was cleaner than I'd expected.

George ★★★★★

Took this out to a dark site for the Veil Nebula and was blown away by how much it cut through light pollution. The dual O-III bands really make those faint supernova remnants pop against a black sky.

Eli ★★★★★

Used it last night on the Dumbbell Nebula and the difference was night and day from my unfiltered view, the background sky turned completely black. The two emission lines really cut through the light pollution perfectly.

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