Svbony UHC 1.25" is a professional broadband filter dedicated to visual observations and astrophotography near large cities and other areas characterized by high light pollution.

This filter combines the ability to almost completely eliminate the unwanted component coming from sodium and mercury lamps with high transmittance for the most important spectral lines from the point of view of astrophotography, such as Hα, Hβ , NII, SII and OIII. The spectral characteristics of the Svbony UHC 1.25" filter have been selected in such a way as to effectively increase the contrast of the observed nebular objects.

The filter is equipped with an aluminum frame with M28.5x0.6 thread.

The most important features of the Svbony UHC 1.25" filter

• high transmission broadband filter for the most important spectral lines such as Hα, Hβ, NII, SII and OIII
• excellent background dimming to improve the contrast of nebular objects
• effective removal of light pollution
• possibility of use in visual observations and astrophotography

Technical parameters

• filter type: broadband filter, UHC
• Filter diameter: 1.25"
• substrate material: optical glass
• filter thickness: 1.85 mm
• Passed bands: Hα (656.3 nm), Hβ (486.1), OIII (495.9 nm), OIII (500.7 nm), SII (672 nm), NII (654 nm, 658 nm)
• maximum transmission: >90%
• blocked bands: mercury lamps (435.8 nm, 546.1 nm, 577 nm, 578.1 nm), sodium lamps (598 nm, 589.6 nm, 615.4 nm, 616.1 nm)
• frame material: aluminum
• thread: M28.5x0.6

Set elements

• Svbony UHC 1.25" filter

Guarantee

12 months