Baader RGB Filters (Individual)

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£78.00
SKU 2458470R

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  • Individual, single, RGB filters
  • Availabe in different sizes
  • Ultra high contrast impermeable RGB-Filter, IR-blocked
  • NO halos, NO reflections, NO ghosting
  • non-ageing sealed coating edges
Description

This high quality five (5) set of filters from Baader are for astroimaging purposes.

Mechanical Properties

  • Parfocal and plane polished substrates. Each individual filter is optically fine-polished to 1/4 wave.
  • Baader filters are hard coated individually.
  • Baader filters especially are not cut out of large size plate-glass, which is a typical manufacturing process for economy filters (cut-out filters exhibit micro-cracks around all edges. Capillary action between glass and coating layers will lead to premature ageing due to moisture deposition).
  • All Baader filters have individual coating sealed edges, impermeable against ageing because the the penetration of moisture impossible.
  • Baader filters are being tested repeatedly to comply with MIL-specifications. One common process is to boil the test specimen for one hour in salt water. Baader filters remained completely intact as opposed to filters drilled out of large glass plates.
  • All Baader filters sport scratch resistant hard coatings which can be cleaned repeatedly throughout their entire lifetime as many times as needed - preferably with Baader Optical Wonder cleaning fluid.

Optical Properties

  • No reflections when compared to competing RGB-filter recipes.
  • Balanced RGB-design offer 1:1:1 exposure times for most telescope optical systems - an important benefit when imaging in automated mode.
  • Maximised colour contrast for each of the three RGB channels - achieved through steep slopes at all transmission curves combined with science approved placement of spectral window.
  • O III emission line double-weighted in the B and G channel as well, with maximum peak transmission for unparalleled deep sky S/N yield
  • R-Filter provides maximum transmission of H-alpha and S II emission but at the same time completely blocks all NIR and IR from 680 out to 1200 nm
  • Blocking of Mercury and Sodium vapour lamps at 580 nm in the G and R filters blackens the sky background and maximises colour balance and colour separation.
Specifications
MANUFACTURER Baader Planetarium
TRANSMISSION RANGE multiple bands (see spectral image)
FILTER THICKNESS (WITHOUT CELL) 2 mm /3 mm
AR-COATING dielectrically coated, planeoptically polished
FILTER SIZE Various
FILTER USAGE CCD, Contrast Enhancement, Light Pollution Reduction, Luminance, RGB
FILTER MOUNTED Mounted (LPFC 6mm) and Unmounted
TYPE OF FILTER Bandpass
SINGLE OR SET? Filter-Set
FILTER SHAPE round and square