Alpine Astronomical Baader Safety Cool Herschel White-Light Solar Photographic Prism (2")

Alpine Astronomical Baader Safety Cool Herschel White-Light Solar Photographic Prism (2")

Alpine Astronomical Baader Safety Cool Herschel White-Light Solar Photographic Prism (2")

B&H # ALHERSCHP MFR # HERSCH-P
Special Order
Expected availability: 7-14 business days

Product Highlights

  • For Safe Imaging of the Sun
  • Reveals Sunspots and Surface Granulation
  • Ceramic Tile Backplate Dissipates Heat
  • Improved Resolution and Contrast to Film
  • Removable 540nm Solar Continuum Filter
  • Integrated Solar Finder
  • 2" Diameter Barrel
  • Heat-Dissipating Magnesium Alloy Body
  • Foam-Lined Carrying Case
Show moreShow less

SAFETY FIRST: Observing the Sun without the proper protection may result in serious personal injury, including permanent eye damage and blindness, and/or damage to equipment. Never point an optic at the sun without an approved solar filter on the front of the optic. For direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder, ensure your filter is ISO 12312-2 (also written as ISO 12312-2:2015) certified. Never use photographic neutral density filters for direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder.

$0.00 Tax Collected Outside NY and NJ

You Pay: $729.00

Add to Wish List Item in Wish List

Alpine Astronomical HERSCH-P overview

  • 1Description

The Baader Safety Cool Herschel White-Light Solar Photographic Prism from Alpine Astronomical provides safe full-aperture solar views without image degradation. Utilizing an innovative internal light trap and ceramic tile backplate, complemented by a Baader ND 3.0 and a removable Solar Continuum Filter, the prism reduces intense bright light to safe levels while transmitting the full visible spectrum, revealing solar details without the tinting that is common in many solar filters. Engineered for photographing the sun, Alpine adds three Baader ND filters: ND1.8/1:64, ND0.9/1:8, and ND0.6/1:4 to further dim the image, allowing for longer exposures; and by using them in place of the Continuum filter the prism can be used for visual observations.

As a full-spectrum solar filter that does not selectively filter any of the visual wavelengths, it reveals surface granulation and sunspot detail including penumbra (the less dark outer part of a sunspot, surrounding the dark core); and since the sun is shown in pure white light, the prism further permits the use of additional eyepiece filters to selectively study any bands desired, without the compounding effects of a pre-filter. This iteration of the prism comes with a removable Solar Continuum Filter that transmits in the 540nm wavelength, to further enhance solar surface details. The Continuum also boosts contrast and reduces the effects of atmospheric turbulence to deliver crisp and clear views.

The ceramic back plate and magnesium-alloy housing help to dissipate heat more efficiently than aluminum, while being completely sealed for safety and improved performance. An added feature of the back plate is that because it's translucent, it doubles as a safe solar finder because the defocused image of the sun can be seen through the plate. Its threaded body also enables the 2" snout and eyepiece holder to be removed, permitting the attachment of accessories and allowing for close-coupling of cameras and compatible binoviewers. To keep the prism safe during transport and storage, Alpine includes a hard carrying case with a custom foam interior lining.

Reveals Solar Features
  • Shows surface granulation, and sunspot detail including penumbra (the less dark outer part of a sunspot, surrounding the dark core)
  • Broad-band white-light filter that does not selectively filter any of the visual wavelengths
  • Permits the use of additional eyepiece filters to selectively study any bands desired, without the compounding effects of a pre-filter
Removeable Baader Solar Continuum Filter
  • Transmits in the 540nm spectral region
  • Enhances the visibility of solar granulation and sunspot details
  • No emission and absorption lines
  • Boosts contrast and reduces the effects of atmospheric turbulence
  • Works in all types of telescopes, for both visual observation and imaging
  • On SCTs and achromatic refractors it completely excludes the red and blue wavelengths, centering on the peak visual wavelengths where the telescope optics are sharpest and free from chromatic aberration
  • For digital imaging, the use of an UV/IR cut filter is recommended to completely cut the defocused infrared wavelengths
  • The Solar Continuum filter must be used in conjunction with a primary solar filter such as the Baader Herschel Wedge Prism or permanent eye and equipment damage will result
  • May be removed from the Herschel prism by the user for pure white-light views
Optical Performance
  • Improved resolution, sharpness, and contrast versus glass objective solar filters and films
  • Provides full-aperture views with little or no image degradation
  • Internal baffling and prism rear-face multi-coatings further reduce scatter and maximize contrast
  • Permanently installed precision polished and anti-reflection multi-coated neutral density 3.0 filter ensures that there is no chance of accidentally viewing unfiltered sunlight
Designed to Dissipate Heat
  • Ceramic tile backplate diffuses and dissipates heat, and remains cool during use
  • Multi-layered perforated steel screen diffuses bright light and heat energy
  • Die-cast magnesium body also conducts away the heat more efficiently than aluminum
Built-In Solar Finder
  • The sun's defocused image can be easily seen projected onto the translucent ceramic backplate, permitting fast and easy aiming
  • Eliminates the need to look directly toward the sun
Construction Details
  • Removable 2" nose piece and 2" Baader Clicklock eyepiece clamp
  • Threaded machined magnesium body permits attachment of accessories, and allows for close coupling of cameras and compatible binoviewers
  • Complete closed design prevents tampering, reducing the risk of damage to the system or to the user
  • Hard case with custom-cut foam lining protects prism and accessories during transport and storage
In the Box
Alpine Astronomical Baader Safety Cool Herschel White-Light Solar Photographic Prism (2")
  • Solar Continuum Filter
  • Hard Carrying Case
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    Alpine Astronomical HERSCH-P reviews

    Be the first to review this item

    Alpine Astronomical HERSCH-P Q&A

    Alpine Astronomical HERSCH-P accessories

    See any errors on this page? Let us know.