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Baader f/2 Highspeed Narrowband CCD Filter: H-Alpha - 2" FHALHS-2 2459397 For Sale


Baader f/2 Highspeed Narrowband CCD Filter: H-Alpha - 2



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Baader f/2 Highspeed Narrowband CCD Filter: H-Alpha - 2" FHALHS-2 2459397:
$392

Baader f/2 Highspeed Narrowband CCD Filter: H-Alpha - 2" FHALHS-2 2459397

Description Ordering Info USA Shipping International Orders Returns Our store 1. PRODUCT DESCRIPTION

 

Baader f/2 Highspeed Narrowband CCD Filter with preshift and LPFC (low profile filter cell): H-Alpha - 2"

Baader's new f/2 Highspeed Narrowband Filters are designed especially for the delicate requirements of extremely fast astrograph optics, such as Hyperstar, RASA, and ultra-fast instruments from TEC/AP/ASA/etc. Conventional narrowband filters cause a heavy loss in transmission due to the strong CWL-shift. In extreme cases the CWL even shifts 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. Also the FWHM is optimized. 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 the effective use of extremely fast optics for high contrast imaging of emission nebulae. Using these filters between f/1,8 and f/3,5 shows a dramatic improvement compared to any regular set of narrowband-filters.

Manufacturer part # FHALHS-2 or 2459397

WARNING: This filter is not designed for solar observation. NEVER use these filters for observing or imaging the Sun, or permanent eye and equipment damage will result.

   

Note: Occasionally, the product you receive might have a slightly different cosmetic appearance or labeling than what is shown. This can often change from batch to batch according to the whims of the manufacturer. However, you will always receive a brand new, original product as described above.

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