Antlia H-beta & OIII 1.25" Filter  - 1.25"

The Antlia H-beta & OIII 1.25" Filter  is engineered specifically for night visual nebulae observation at a high contrast and Deep-sky astrophotography. Its transmission is 90% or greater at critical  wavelengths (OIII 500.7nm, OIII 495.9nm, and H-Beta 486.1nm). You’ll notice much higher contrast boost to observe Planetary Nebula, Supernova Remnant, Emission Nebula, Diffuse Nebula, and extremely faint nebulae by Antlia HB-OIII filter.
When the Antlia H-beta & OIII 1.25" Filter used for Astro Deep-sky imaging, it enhances the details of the OIII and H-Beta emission lines with astronomical cameras and DSLRs.

Antlia H-beta & OIII 1.25" Filter  MAIN APPLICATION AND PERFORMANCE:

The Antlia H-beta & OIII 1.25" Filter was coated with almost total suppression of optical density (OD4) on unwanted wavelength and the filter cut-off wavelength is 300-1000nm, which meets the spectral requirements of photographic cameras and further enhances the suppression of the IR region, compared with the visual filters with a cut-off depth of OD3@350-750nm, it performs better to darken the sky background and make deep-sky observation and photography of nebulae, star clusters, and galaxies more easily.
The HB-OIII filter helps faint objects become much more visible against the blackened background and produces near-photographic views of the Veil, Dumbbell, and Orion nebula, among many other objects under both light-polluted and dark skies.
Since human eyes are less sensitive at night, large aperture telescopes are recommended to gather light and funnel it into the observer's eyes.

Antlia H-beta & OIII 1.25" Filter Technical Specifications:

Sizes and MAP Prices：

Size Minimum Advertised Pricing (MAP)
Mounted: 1.25’’ US$99.00
Other sizes 2’’ Availability and price are to be confirmed

Antlia H-beta & OIII 1.25" Filter FILTER RING:

1.25’’(M28.5*0.6)
Ultra-thin filter cell to minimize vignetting, Black anodized finish, Laser engraving No fading

Warranty: 3-years against delamination

DO NOT LOOK AT THE SUN WITH ANTLIA FILTERS. Serious eye damage will result if you fail to observe the warning.