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You are here: Home arrow Solar Observatory arrow Instrumentations arrow Herschel Wedge
Solar Observatory - Instrumentations - Herschel Wedge PDF Print E-mail

HERSCHEL WEDGE


2” Baader Planetarium Herschel Wedge (Baader)

1. Herschel Wedge

A Herschel Wedge Solar Prism is a professional tool, delivers the absolute finest true white light high-resolution and high-contrast views possible from the telescope. The first surface uncoated reflective design results in a pure white light view, with no selective filtration, permit to see solar detail in the natural color or to permit further selective filtration in any wavelength desired. The Baader Planetarium Herschel Wedge Solar Prism is the finest ever produced, using a Zeiss prism and other proprietary features to reduce scattered light to an absolute minimum.

As with any solar viewing system (including glass or mylar objective solar filters), the Herschel Wedge Solar Prism requires responsible handling. Herschel wedge prisms have been used by professionals and amateurs for many years, and are quite safe if some care and precautions are always observed. Be sure to read and understand all precautions before placing the prism into use.

This filter is mainly used for high resolution sun surface view using Vixen 80M telescope. This can be used for sunspot structure monitoring using CCD or video camera.

Precautions:

  • The Herschel Wedge is only recommended for use with refracting telescopes, NOT Schmidt-Cassegrain, Maksutov, or any other Reflecting Telescopes
  • NEVER remove the 1:1000 (D=3) neutral density filter. This filter is absolutely required for all visual use of the prism. The filter comes already pre-mounted from the factory at the front of the 2” eyepiece holder, and is permanently fixed into the holding cell. Important: Before each and every use, check to ensure that the filter is in place and securely mounted in the prism (also not loose, cracked, or broken).
  • The Baader Light Trap renders the output beam harmless to the touch or sight. Please ensure the light trap screen is in place before each use, and encourage onlookers not to poke at or insert any objects up into the output area. The energy from the prism still must first contact the screen, and a careless prodding finger can possibly be inserted into this narrow region where the beam still has enhanced intensity.
  • Never leave the telescope outside unattended during use (a requirement for any solar viewing with any solar filtration device).
  • Prior to using any long accessories (barlows, etc) please first check and ensure that they do not protrude so far as to contact the internal 1:1000 neutral density filter. This will prevent the possibility for damage to the filter.
 
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