Introducing the Antlia OIII 4.5nm EDGE Narrowband Filter - Unveil the Cosmos with Precision

Are you ready to take your astrophotography to the next level? Look no further than the Antlia OIII 4.5nm EDGE Narrowband Filter, designed to elevate your imaging experience like never before.

Sharper Imaging, Superior Results The Antlia OIII EDGE filter boasts a razor-thin 4.5nm bandpass, optimizing the Full Width Half Maximum (FWHM) for unparalleled precision. Say goodbye to unwanted wavelengths with an optical density (OD)5 suppression, mirroring the excellence of our renowned Antlia 3nm Pro series filters. The result? Astonishingly superior Signal-to-Noise Ratio (SNR) and breathtaking contrast in your celestial images.

Maximum Signal, Minimum Compromise Our filters are engineered to deliver an impressive 85% transmission precisely at the 500.7nm line, unveiling the faintest OIII nebulae structures with utmost clarity. Unlike conventional broader narrowband filters that suffer from a heavy loss in transmission due to Center Wavelength (CWL)-shift, we guarantee T>85% within a 1nm range of the center bandwidth. This means you can count on high transmittance whether you're working with long focal ratios or fast optical systems.

Versatile Compatibility Antlia 4.5nm EDGE filters are your universal solution. Blue-shift data demonstrates their compatibility with nearly all systems as fast as f/3, ensuring minimal loss in emission signal. Whether you're an amateur astronomer or a seasoned astrophotographer, our filters meet the demands of fast optics with finesse.

Safety First While we open up the wonders of the cosmos, we want to remind you that these filters are not suitable for solar imaging or night visual observation. NEVER attempt to look at the sun with this filter, as serious eye damage may occur if you disregard this warning.

Quality Beyond Compare When crafting filters for astronomy imaging systems, we meticulously consider how they harmonize with optical systems. We painstakingly design out-of-band blocking rates, transmittance, and band-pass parameters to achieve optimal results. Each filter undergoes rigorous individual testing and scanning to meet our exacting quality standards.

Antlia is synonymous with filters that redefine astrophotography, offering exceptional quality and performance parameters at prices that won't break the bank. Experience the cosmos like never before, where affordability meets excellence.

Elevate your astrophotography game with the Antlia OIII 4.5nm EDGE Narrowband Filter - Your window to the universe's finest details!

Specifications

High transmittance and narrow 4.5nm bandwidth for maximum contrast
Steep spectral profile eliminates halos around bright stars
Single, non-glued substrate to eliminate internal reflections
Ideal for capturing OIII Emission Nebulae, Planetary Nebulae, Wolf Rayet Nebulae, and Supernova Remnants
Suitable for use in both light-polluted areas and dark sites, extending imaging time during moonlit nights
Compatible with systems down to f/3 with minimal signal loss
Edge-blackened for reduced internal reflections and superior optical reliability
Effective for deep sky objects containing OIII emissions
Technical Specifications:
- Substrate: Optical, Single Substrate
- Filter Thickness: 2mm +/- 0.05mm (1.25'' size)
- FWHM (Full Width at Half Maximum): 4.5nm
- CWL (Central Wavelength): 500.7nm
- Peak Transmission: >85%
- Blocking: > 5 OD (0.001% out of band blocking) @ 300-1000nm
- Surface Quality: S/D (scratch/dig) = 60/40 (MIL-O-13830 reference)
- Transmitted Wavefront: Lambda/4 or better
- Parallelism: Less than 30 arcsec
Enjoy peace of mind with a 3-year warranty against delamination.

Antlia OIII 4.5nm EDGE curve.jpg

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Antlia Filters OIII 4.5nm Edge

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