Baader UBVRI Photometric R-Filter
- Baader UBVRI - R-Filter
- Photometric Johnson/Bessel filter system
- Partial dielectric design with BBAR minimised reflections
- Plane-optically polished, 4mm glass thickness
- non-ageing sealed coating edges
These Baader Planetarium UBVRI filters are based on the Johnson/Bessel photometric filter system.
Each filter is 4mm in thickness and they are plane-optically polished, with a partial dielectric coating to minimise reflections. They, like other Baader filters, have non-ageing, sealed edge coatings for long life usage.
|TRANSMISSION RANGE||Transmission range after Johnson/Bessel|
|FILTER THICKNESS (WITHOUT CELL)||4 mm|
|CWL (CENTRAL WAVELENGTH)||Bessel R|
|AR-COATING||dielectrically coated, plane-optically polished|
|FILTER USAGE||Specialty: UBVRI Photometry|
|TYPE OF FILTER||Bandpass|
|SINGLE OR SET||Single Filter|