Antlia H-beta és OIII (UHC) szűrő, 31,7 mm

Ez a szűrő egy extrém kontrasztos UHC modell, mely egyszerre ereszti át a vizuális megfigyelésnél legfontosabb OIII és H-beta vonalakat. A magas, 90%-feletti áteresztés, a szűk áteresztési tartomány és a nemkívánt tartományok meredek levágása mind azt eredményezi, hogy emissziós ködök esetében (Emissziós és planetáris ködök, szupernóva maradványok) nagyszerű kontraszt javulás érhető el ezzel a szűrővel, talán a piacon kapható UHC szűrők közül ez a legjobbak között van (ha nem A legjobb).

További infó angolul:

Antlia HB-OIII 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 it is used for Astro Deep-sky imaging, it enhances the details of the OIII and H-Beta emission lines with astronomical cameras and DSLRs.

Main Application and Performance:

Antlia HB-OIII filter was coated with almost total suppression of optical density (OD)4 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.

Technical Specifications:

Filter Ring:

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

Spectrum Curve: