DayStar Quark Gemini Hydrogen Alpha Dual Etalon Solar Filter
    search
    • DayStar Quark Gemini Hydrogen Alpha Dual Etalon Solar Filter

    DayStar Quark Gemini Hydrogen Alpha Dual Etalon Solar Filter

    2,309.00
    Tax included
    Available payment methods
    i
    PayPal
    Secure payment. Additional fees may apply.
    PayPal
    i
    Bank transfer
    Pay comfortably from home. After confirming your order, you will receive all the information required to make a bank transfer.
    Bank transfer
    i
    Pay in store
    Pay directly in our shop in Givisiez, in cash or by card. Your order can be collected after confirmation.
    Pay in store
    i
    PimPay
    A payment system with no fees. Simply top up your PimPay account before completing your purchase. No fees are charged to either the buyer or the merchant.
    PimPay
    i
    HeyLight
    Credit for up to 12 months or payment in 3 instalments. For payment in 3 instalments, the displayed price includes a 3.74% surcharge applied by Astromanie to cover the service fees associated with this payment method.
    HeyLight
    Delivery times depending on the shipping method: Switzerland: 2 to 3 days; Europe: 7 to 10 days.

    DayStar Quark Gemini Hydrogen Alpha Dual Etalon Solar Filter

    The DayStar Quark Gemini is a dual-etalon H-alpha solar filter that combines both Prominence and Chromosphere modes in a single device. With a built-in telecentric system and an easy side lever, it allows instant switching between solar surface and limb observations without refocusing or changing equipment.

    Quantity
    Last items in stock

    Available

    DayStar Quark Gemini Hydrogen Alpha Dual Etalon Solar Filter

    Description

    The DayStar Quark Gemini revolutionizes solar observation by integrating two independent Fabry-Perot etalons within a single housing. This design allows observers to switch instantly between the Chromosphere mode, which highlights fine surface details such as filaments and granulation, and the Prominence mode, which reveals bright, extended structures above the solar limb.
    The transition between modes is achieved through a simple side-mounted lever, requiring no refocusing or optical adjustment.

    A built-in 4.2x telecentric barlow, precisely optimized for the 656.28 nm Hydrogen Alpha wavelength, ensures a flat, evenly illuminated field. The dual etalon configuration provides both a narrow and a wide bandpass, balancing brightness and contrast for detailed imaging or visual work.

    The Gemini is compatible with refractors from f/4 to f/8 and includes integrated baffling, a 12 mm blocking filter, brass compression rings, and LED indicators for operational status (heating, ready, fault). Power is supplied via USB 5 V / 2 A, and the system consumes very little energy, allowing a full day’s operation using an optional compact battery pack.

    For refractors of 80 mm aperture or larger, an ERF (Energy Rejection Filter) is strongly recommended to prevent internal heat buildup and to maintain thermal stability during long observation sessions.

    Each Gemini unit is assembled, calibrated, and tested by DayStar Instruments (USA) to meet strict optical standards. The filter ships in a watertight Pelican-style case for safe transport and dust-free storage, making it ideal for both professional and outreach use.

    Technical Specifications

    • Type: Dual-etalon Hydrogen Alpha solar filter

    • Model: Gemini (Chromosphere and Prominence)

    • Built-in telecentric lens: 4.2x optimized for 656 nm

    • Recommended focal ratio: f/4 to f/8

    • Optical system: Two independent Fabry-Perot etalons

    • Spectral tuning: ±0.5 Å with 0.1 Å detents

    • Blocking filter: 12 mm integrated

    • Clear aperture: 22 mm

    • Front connection: Combined 1.25" and 2" nosepiece

    • Rear connection: 1.25" output (optional 2" and SCT adapters)

    • Power: USB 5 V / 2 A

    • Indicators: LED for heating, ready, and fault

    • Housing: Black anodized aluminum with brass compression ring

    • Weight: Approx. 500 g

    • Use: Direct solar observation (ERF required above 80 mm aperture)

    • Case: Watertight Pelican-style case

    • Warranty: 5 years

    • Manufacturer: DayStar Instruments, USA

    DayStar Gemini CHRO-PRO (DSZGC)