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Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini
Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini
Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini
Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini
Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini
Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini
Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini
Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini

Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini

by Antlia
SKU ANT-SD-MINI
$99.00 - $99.00
$99.00
$99.00 - $99.00
$99.00
Price Match Policy!
  • Passes Ha (656.3nm), CaK (393.3nm), and CaH (396.8nm) wavelengths
  • Without extra light reduction, for refractors up to 100mm aperture only
  • Comes with an Antlia Energy Rejection Filter (ERF) that blocks UV and IR
  • ND filter factory-installed in a fully closed CNC machined aluminum tube
  • Designed with a 1.25'' adapter
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini

    The Antlia Solar Discover Dualband Ha CaK and CaH Filter Assembly - Mini is designed specifically for solar photosphere photography. This Mini version is designed with a 1.25'' adapter and passes Ha at 656.3nm, CaK at 393.3nm and CaH at 396.8nm, enhancing contrast and sharpness with greater visibility of surface details and sunspots and higher contrast for solar faculae. It comes with an Antlia Energy Rejection Filter (ERF), and the necessary ND filter is factory-installed in the tube. Without extra light reduction it can only be used with refractors up to 100mm aperture. Antlia's transmittance requirement for the visible range (380-780nm) is a maximum of 0.0032%.

    Dual-Band Imaging: Capturing 656.3nm Ha, 393.3nm CaK, and 396.8nm CaH

    The Antlia Solar Discover passes Ha (656.3nm), CaK (393.3nm) and CaH (396.8nm) and is designed for photosphere imaging, such as sunspots. Antlia states that it enhances contrast and sharpness, giving greater visibility of surface details and sunspots and higher contrast for solar faculae.

    ERF, ND Filter and Antlia Transmittance Requirements

    The assembly comes with an Antlia Energy Rejection Filter (ERF) that blocks UV and IR light. When you use a zenith mirror, the ERF filter must be installed in the correct position for safe operation; refer to Antlia's installation diagram. The necessary ND filter is factory-installed in the tube. Antlia's transmittance requirements are a maximum of 0.0032% in the visible (380-780nm), UVB and UVA ranges, and a maximum of 3% in the IR (780-1700nm). The filters are assembled in a fully closed tube, CNC machined from aircraft aluminum and oxidized, and Antlia states that no stray light can escape from it.

    Telescope Aperture: Refractors up to 100mm

    Without extra light reduction, the assembly can only be used with refractors up to 100mm aperture. With a telescope above 100mm aperture, Antlia requires additional light reduction for safe operation, such as ERF filters, solar safety films or lowering the telescope aperture. It installs like the Antlia CaK 3nm Solar Herschel Wedge, with the telescope at one end and the camera at the other, and this Mini version is designed with a 1.25'' adapter.

    Solar Discover Assembly vs. Traditional Solar Film

    Antlia states that, compared to other solar reducing films, the Solar Discover Dualband assembly offers these advantages:

    • Higher Contrast and Resolution: Higher contrast for solar imaging and higher resolution of the solar surface.
    • Durability: The design is less susceptible to wear and tear.
    • Ease of Use: It is user-friendly and installs like the Antlia CaK 3nm Solar Herschel Wedge, with the telescope at one end and the camera at the other.

    The Antlia Solar Discover is designed specifically for solar photosphere photography and is not recommended by Antlia for visual observation.

  • Can I use the Antlia Solar Discover Mini for visual solar observing?

    No, this product is not recommended for visual use. The infrared blocking characteristics are slightly different from the ISO 12312-2 standard for visual solar viewers. For technical requirements and safety considerations, Antlia does not recommend it for visual observation, and adds that if the product is used for visual observation, all filters built into the assembly must be in good condition for safety. It is designed for solar photosphere photography.

    What is the difference between the Mini and Standard versions of the Antlia Solar Discover?

    The difference Antlia states is the adapter. The Mini version is designed with a 1.25'' adapter. The Standard version is compatible with both 1.25'' and 2'' adapters.

    Can I use the Antlia Solar Discover Mini on a telescope larger than 100mm aperture?

    Only with additional light reduction. Without it, the assembly can only be used with refractors up to 100mm aperture. Above 100mm aperture, Antlia states you must use additional light reduction for safe operation, such as ERF filters, solar safety films or lowering the telescope aperture.

    What solar details does the Antlia Solar Discover Mini bring out?

    Antlia designed the assembly for solar photosphere imaging, such as sunspots. It enhances contrast and sharpness, giving greater visibility of surface details and higher contrast for solar faculae.

    Do I need to buy a separate ERF for the Antlia Solar Discover Mini?

    No, an Antlia Energy Rejection Filter (ERF) is included in the box. When you use a zenith mirror, the ERF filter must be installed in the correct position for safe operation, as shown in Antlia's installation diagram.

    My Antlia Solar Discover Mini looks different from the pictures online. Is it a genuine product?

    Yes, this is normal. Antlia has noted that due to different production batches, the Mini version may have two different physical appearances. The function and installation are the same.

  • Product Type Solar photosphere imaging filter assembly
    Version Mini
    Adapter Size 1.25''
    Passed Wavelengths Ha 656.3nm, CaK 393.3nm, CaH 396.8nm
    Recommended Telescope Aperture Refractors up to 100mm (without additional light reduction)
    Energy Rejection Filter (ERF) Included, blocks UV and IR
    ND Filter Factory-installed in the tube
    Max Transmittance (Visible 380-780nm) 0.0032%
    Min Transmittance (Visible 380-780nm) 0.000061%
    Max Transmittance (UVB 280-315nm) 0.0032%
    Max Transmittance (UVA 315-380nm) 0.0032%
    Max Transmittance (IR 780-1700nm) 3%
    Visual Use Not Recommended
    Tube Construction Fully closed, CNC machined aircraft aluminum, oxidized
    Installation Telescope at one end, camera at the other; with a zenith mirror, the ERF must be in the correct position
    Appearance Note Two appearances depending on batch; function and installation are the same
    Warranty 3-years (void if disassembled)

    • Solar Discover Dualband filter assembly

      × 1

    • Antlia Energy Rejection Filter (ERF)

      × 1

    • ND filter (factory-installed in the tube)

      × 1

  • 3-Year Manufacturer Warranty. Disassembly of the assembly is prohibited and voids the warranty.