Last Chance Astrodon 49.7 Mm Dia. Unmounted 3 Nm Oiii For 500.1 Nm Pro Version [bmRQi82V]

Astrodon 3 nm OIII Filter

Astrodon's 49.7 mm dia. Unmounted 3 nm OIII filter is a game-changer for astrophotography and research. This narrowband filter is designed to enhance the contrast of emission targets by significantly lowering background signal. With a guaranteed >90% transmittance at the emission wavelength, it offers the highest signal available, ensuring that you capture the faintest details with clarity. The Astrodon Narrowband filters set a new standard in performance and durability, making them a top choice for both amateur and professional astronomers.

• Superior Performance: The narrow 3 nm bandwidth effectively enhances contrast, allowing you to bring out faint features with ease.
• High Transmittance: The guaranteed >90% transmittance ensures that you're getting the highest signal possible, even in challenging conditions.

Unmatched Quality and Durability

What sets Astrodon's Narrowband filters apart is their exceptional quality and durability. Each filter is coated to the edge and edge blackened to minimize stray light, which is crucial for a filter that blocks most light except for the narrow bandpass. This attention to detail ensures that your images are free from halos around bright stars, even during long exposures of 30-45 minutes. Additionally, Astrodon's filters are known for their consistency and reliability, with recent production technologies achieving >95-98% transmittance at the emission wavelengths.

• Edge Blackening: Minimizes stray light and ensures your images are free from unwanted halos.
• Consistent Performance: Recent production technologies have achieved >95-98% transmittance, providing you with the best possible results.

Guaranteed Performance and Compatibility

Astrodon stands by the performance of their Narrowband filters, guaranteeing >90% transmittance at the emission wavelength. This guarantee is expensive to manufacture, but it ensures that you are getting what you paid for. The filters are also designed to be compatible with nearly all systems, including fast f/3.5 systems, with virtually no loss in emission signal. This means you don't need to invest in custom "upshifted" filters, saving you time and money.

• Guaranteed Performance: Astrodon guarantees >90% transmittance at the emission wavelength, ensuring the best possible results.
• Universal Compatibility: Designed to work with nearly all systems, including fast f/3.5 systems, without any loss in signal.