Open Box Baader 1.25" f/2 Highspeed Filter Set

No Reviews yet.
  • Price:
  • Sale
  • $446.25
  • Regular price $525.00

Already have gear? Trade it in for cash or new equipment.

Accessories Added

  • This is an open box set that is in like new condition



Open Box Baader 1.25" f/2 Highspeed Filter Set

Baader's new f/2 High-speed Narrowband filter sets contain H-alpha, OIII, and SII filters and are made specifically for the sensitive requirements of exceptionally fast astrograph optics, such as HyperStar, RASA, and extremely fast instruments from TEC, AP, ASA, etc. Ordinary narrowband filters generate a heavy loss in transmission because of the strong CWL (center-wavelength) shift. In severe circumstances, the CWL even shifts out of the FWHM (full width half maximum).

As a result, these filters have a CWL-preshift which flawlessly matches f/2 to f/3. Furthermore, the FWHM is enhanced. Despite the typical line broadening with such fast optical trains, these filters are still able to produce peak contrast. These filters permit the effective use of tremendously fast optics for maximum contrast imaging of emission nebulae for the first time. Compared with a regular set of narrowband filters, using these high-speed filters between f/1.8 and f/3.5 will exhibit drastic improvement.


ConditionLike New
Warranty90 Day Covered By OPT


Have a Question?

Be the first to ask a question about this.

Ask a Question