Baader HSO 2 F/2 set (SKU: 2459400) extras opinie

Shop online: ● not available  Shop in Warsaw (qty): ● not available  Shop in Chorzow (qty): ● not available

CHEAP DELIVERY TO EUROPEAN COUNTRIES CHECK IT OUT!

Baader HSO 2 "F / 2 is a set of three professional narrowband filters that enable taking pictures in Hα, SII and OIII bands.

These filters allow, among other things, to fully use the capabilities of astrographs in the Rowe-Ackermann-Schmidt (RASA) system, which are characterized by a shortened focal length and a huge f / 2 light, thus making it possible to ± c imaging in a wide and flat field while maintaining short exposure times.

The main difference that distinguishes Baader HSO 2 "F / 2 filters from other, more universal products available on the market is the very high transmissivity within the transmitted band. Baader Planetarium specialists managed to eliminate the problem. That extends the center-wavelength maximum (CWL) out of the half-bandwidth (FWHM) range by careful selection of CWL pre-offset, Baader HSO filters They are characterized by exemplary optical efficiency, perfectly corresponding to the light of the f / 2 ÷ f / 3 order.

Great emphasis was also placed on the selection of the FWHM parameter, thanks to which these filters perfectly cope with the widening of spectral lines, guaranteeing the obtaining of an image with amazing contrast, which gives particularly spectacular results, for example when photographing emission nebulae.

Highlights of the Baader HSO 2 "F / 2 filter set

• three narrowband filters designed for use in astrographs with extremely high light intensity
• shift of the maximums of the transmission bands for Hα, SII and OIII lines optimized for exposure at f / 2 - f / 3
• carefully selected half-width of the transmission bands guaranteeing high contrast
• surface polished substrate covered with dielectric coatings

Technical specifications

• type of filters: narrowband
• transmitted bands: Hα, SII, OIII
• maxima of the wavelength (CWL): 656.3 nm, 502 nm, 673 nm
• recommended telescope lumen: f / 1.8 ÷ f / 3.5
• type of anti-reflective coating: dielectric
• surface finishing: plane polishing
• filter diameter: 2 "
• filter thickness: 2 mm
• filter holder type: low profile (LPFC)
• filter holder thickness: 6 mm

Elements of the set

• Baader f / 2 Hα 2 "filter
• Baader f / 2 SII 2 "filter
• Baader f / 2 OIII 2 "filter