Filter Chroma H-alpha 3 nm 50x50 mm, unmounted (SKU: CT-27001-50X50) all astro filters opinie

2180 EUR price without VAT: 1773 EUR Shop online: ● on request  Shop in Warsaw (qty): ● on request  Shop in Chorzow (qty): ● on request

CHEAP DELIVERY TO EUROPEAN COUNTRIES CHECK IT OUT!

The Chroma H-alpha 3 nm 50x50 mm unmounted (SKU: CT-27001-50X50) is a narrowband filter in a square format, designed for astrophotography in advanced optical systems. Its very narrow passband allows for precise isolation of H-alpha emission, significantly improving contrast and structure definition of emission nebulae.

Key features

• 3 nm bandwidth, optimized for the H-alpha line (approx. 656 nm)
• bandwidth transmission at approximately 99%
• hard coatings applied using the reactive magnetron sputtering method – exceptional durability and resistance to changing conditions
• anti-reflective coatings on the back surface reduce reflections and improve transmission
• Chroma Astronomy filters are parfocal to each other
• optimized for use in f/4 and slower optical systems, also adapted to f/3 systems
• not intended for solar observation

Set components

• H-alpha filter 3 nm 50x50 mm unmounted – CT-27001-50X50

Technical parameters

• type: narrowband H-alpha filter for astrophotography
• format: 50x50 mm, unframed
• bandwidth: 3 nm
• central wavelength (CWL): approx. 656 nm
• transmission: approx. 99%
• optical substrate: 3.0 mm thick glass
• coating technology: reactive magnetron sputtering (hard coatings)
• coating construction: main layer on the front side, AR coatings on the back side
• Transmitted wavefront accuracy: better than 0.25 waves/inch
• parfocal: yes (with other Chroma Astronomy filters)
• production: USA (Vermont)