Baader H-alpha 50,8mm filter f/2 Highspeed

Product code: BP2459397

Quick Overview

Baader H-alpha filter f2 Highspeed is designed especially for the delicate requirements of extremely fast astrograph optics, in particular Hyperstar and RASA. Conventional narrowband filters cause a heavy loss in transmission due to the strong CWL-shift. In extreme cases the CWL even does shift out of the FWHM (CWL= Center-wavelength / FWHM= full width half maximum). Therefore these filters have a CWL-preshift which matches f/2 to f/3 perfectly.

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Regular Price: €306.00

Special Price €291.00

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if you pay by bank transfer €282.27

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Details

In spite of the typical line broadening with such fast optical trains they are able to deliver maximum contrast. For the first time these filters allow to use fast optics really effectively with high contrast emission nebulae imaging. Using these filters between f/1,8 and f/3,5 shows a dramatic improvement compared to any regular set of narrowband-filters.

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