Astronomik
8H11F9
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There is an ever-growing demand for astrophotography filters suitable for extremely fast optical systems like Celestron's RASA and Takahashi's Epsilon Astrographs. The Astronomik MaxFR series of narrowband-emission line filters is designed to deliver the highest quality data for fast optical systems, enabling deep-sky imaging with maximum contrast and minimal stray light.
The MaxFR emission line filters are engineered to work with fast focal ratios, making them ideal for deep-sky imaging. You can select filters with 12nm or 6nm bandwidth (FWHM) for the three most important emission lines in astrophotography: oxygen (OIII), hydrogen (H-alpha), and sulfur (SII).
The new MaxFR filters are made with advanced MFR coating technology, providing exceptional out-of-band blocking across the entire wavelength range from UV to IR. This ensures an extremely high contrast, reduced stray light, and no halos in your final astrophotography images.
If you frequently image from light-polluted areas, narrowband-emission line filters are your best tool for capturing high-contrast deep-sky images. An H-alpha filter is often the first choice for imaging red nebulae, while OIII filters expand your imaging possibilities by revealing blue-green nebulae and planetary structures. Combine H-alpha, OIII, and SII filters to create stunning Hubble Space Telescope-like images.
Choosing between 6nm and 12nm depends on your imaging setup and location. For cameras with low dark current and effective cooling, the 6nm filter is ideal for reducing background light and capturing fainter details. The 12nm filter is suitable for DSLR cameras and imaging setups with limited cooling or dark current control.
With Astronomik narrowband filters, you don’t have to increase exposure time, but you can if needed. The filters allow nearly all emission line photons to pass through while blocking unwanted light, giving you the flexibility to capture deeper images with longer exposures, especially in light-polluted areas.
Astronomik OIII 6nm CCD MaxFR 1.25'' – Premium Deep-Sky Filter
8H11F9
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