Baader f/2 Highspeed H-alpha Filter

$261.25$486.25

  • Highspeed Narrowband Filter are 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.
  • 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 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.
  • 2459393 (1.25″), 2459381 (31mm), 2459397 (2″), 2459385 (50.4mm), 2459389 (50x50mm)
1.25" Round Mounted
$321.25
31mm Round Unmounted
$261.25
2" Round Mounted
$486.25
50.4mm Round Unmounted
$436.25
50x50mm Square Unmounted
$473.75
Clear
Availability: Approximatively 7 to 10 days when on order. Contact us for stock status.

Please note that due to Covid-19 and a high volume of orders, some products could be on backorder at our suppliers and may have longer delays for the delivery. Contact us for stock status.

SKU: N/A Categories: , , ,

La version française de Astronomie Plus est présentement en cours de traduction. Nous vous remercions de votre patience.

Pour obtenir un service personnalisé en français, merci de communiquer avec nous par téléphone ou par courriel. Vous pouvez aussi venir visiter notre boutique du Vieux-Longueuil afin d’être conseillé en personne par l’un de nos spécialistes.

Si vous avez besoin de la traduction d’une description de produit, communiquez avec nous pour que nous vous la produisions en priorité.

373 Gentilly Ouest
Longueuil, Québec
Canada, J4H 1Z9
Tel: (450) 463-5072
Fax: (450) 463-3409
Sans frais: 1 888 540-0444

When buying at Astronomy Plus, in addition to having the best pre-sale and post-sale service, we offer you the best deals available.

You only have to send us a link of the item/offer and we will match any price we confirm as valid.

We will match the price of licensed retailers or manufacturers only.

Exclusions

We reserve the right to refuse a price match for:

    Need help ?

    Fill out the form below and you will be contacted by e-mail as soon as possible.



    Nous parlons aussi français :)


    ---

    Need help