Baader H-alpha 2" unmounted f/2 Highspeed Filter 3.5 nm CMOS optimized (2961378U)
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    • Baader H-alpha 2" unmounted f/2 Highspeed Filter 3.5 nm CMOS optimized (2961378U)
    • Baader H-alpha 2" unmounted f/2 Highspeed Filter 3.5 nm CMOS optimized (2961378U)
    • Baader H-alpha 2" unmounted f/2 Highspeed Filter 3.5 nm CMOS optimized (2961378U)

    Baader H-alpha 2" unmounted f/2 Highspeed Filter 3.5 nm CMOS optimized (2961378U)

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    Baader H-alpha 2" unmounted f/2 Highspeed Filter 3.5 nm CMOS optimized (2961378U)

    Baader H-alpha 2" (47.4 mm) unmounted filter, CMOS and CCD optimized. Designed for ultra-fast < f/2.3 systems such as Celestron RASA. 3.5 nm bandwidth, ideal under heavy light pollution.

    Quantity
    In stock at the supplier. For delivery time and for shipping outside Switzerland, please contact us.

    In stock at the supplier. For delivery time and for shipping outside Switzerland, please contact us.

    Baader H-alpha 2" unmounted f/2 Highspeed Filter 3.5 nm CMOS optimized (2961378U)

    Description

    The Baader H-alpha 2" unmounted (Ø 47.4 mm, 2 mm thick) f/2 Highspeed Filter 3.5 nm is designed for extremely fast optical systems such as the Celestron RASA f/2 astrographs. It is specially selected for Baader FCCT (Filter Changer Camera Tilter) filter sliders, compatible with QHY cameras and similar devices.

    Optimized for CMOS sensors, it also works excellently with CCD technology. With a central wavelength of 656.3 nm and a 3.5 nm bandwidth, it delivers maximum contrast even under heavy light pollution (Bortle 9 to 6). It reduces star sizes, highlights the finest H-alpha nebula details, and harmonizes exposure times with O-III and S-II filters.

    Featuring precision planeoptical polishing and Reflex-Blocker™ hard coating, it minimizes reflections. Blackened edges with telescope-side indicator ensure correct orientation. Life-Coat™ sealed protection guarantees long-term durability. Lightweight (0.01 kg) and robust, it is sold individually and is indispensable for high-speed H-alpha astrophotography.

    Technical Specifications

    • Manufacturer: Baader Planetarium

    • Product SKU: 2961378U

    • EAN code: 4047825051004

    • Net weight: 0.01 kg

    • Filter type: H-alpha f/2 Ultra Highspeed

    • Mount: unmounted

    • Shape: round

    • Diameter: 47.4 mm (2" without cell)

    • Thickness: 2 mm

    • Central wavelength (CWL): 656.3 nm

    • Half bandwidth (HBW / FWHM): 3.5 nm

    • Transmission: H-alpha line

    • Coating: Reflex-Blocker™ hard coated, planeoptically polished

    • Durability: Life-Coat™ sealed edges

    • Edges: blackened with telescope-side indicator

    • Suitable f/ratio: < f/2.3

    • Compatibility: Celestron RASA 8", Baader FCCT, QHY cameras, CMOS and CCD

    • Application: H-alpha astrophotography, nebulae, light-polluted skies

    • Packaging: single filter

    Baader H-alpha 2" f/2 UHS 3.5nm