Name: Baader Planetarium 1.25" Round O-III f/2 Highspeed Filter with LPFC Mount
Brand: Baader Planetarium
SKU: AA2459394
Price: 213.00 USD
Availability: BackOrder
Rating: 5 (1 reviews)

Baader Planetarium 1.25" Round O-III f/2 Highspeed Filter with LPFC Mount

Baader Planetarium Filter

Baader Planetarium

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Generally ships in 7-14 days, subject to availability

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Generally ships in 7-14 days, subject to availability Estimated to Ship: 07/26/2025.

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Optics & Binoculars

Telescopes & Astronomy

Telescope Filters

Baader Planetarium Telescope Filters

Baader Planetarium Filter 

Shop Baader Planetarium 1.25" O-III Highspeed Filter for maximum contrast with fast astrographs. Dielectrically coated, plane optically polished. Order now!

With the 1.25" Round O-III f/2 Highspeed Filter with LPFC Mount, you can unlock the full potential of your astrophotography. This high-quality, durable filter is specifically designed to meet the exacting demands of ultra-fast astrograph optics, including Hyperstar and RASA systems. Unlike conventional narrowband filters, which often suffer from significant transmission loss due to the strong Central Wavelength (CWL) shift, this innovative filter features a CWL-preshift that perfectly aligns with f/2 to f/3 optics. This unique feature ensures optimal light transmission, even under the most challenging conditions. The Full Width at Half Maximum (FWHM) of this filter is meticulously optimized. Despite the typical line broadening associated with fast optical trains, this filter delivers maximum contrast, enhancing the quality of your images. This versatile filter truly shines when used with fast optics for high contrast emission nebulae imaging. When used between f/1.8 and f/3.5, it offers a dramatic improvement over standard sets of narrowband filters. Crafted by Baader Planetarium, a reputable brand known for its high-quality optical products, this filter is an effective tool for any astrophotographer looking to capture stunning images in low light conditions or of fast-moving subjects. Its large filter size of 31.75mm allows for more light to pass through, making it an ideal choice for a variety of photography situations. In summary, the 1.25" Round O-III f/2 Highspeed Filter with LPFC Mount is a high-speed, high-contrast, and high-quality solution for all your astrophotography needs.

AstroSolar film is the standard for white light solar filters. This mounting cell has two great advantages for eclipse photographers. 

The wide flange shades your camera avoiding overheating. 

The external 3 rubber bumper attachment is easy to remove and replace quickly without disturbing your aim. This is a great advantage for totality in a total solar eclipse. 

Highly recommended

Baader Planetarium 1.25" Round O-III f/2 Highspeed Filter with LPFC Mount

Key Features

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