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Baader Double Polarising Filters

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£63.00
SKU 2408340
Size

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  • Baader 1¼" Double Polarising Filter for observing Moon or planets, or for solar observations (with AstroSolar Safety Film ND 5.0)
  • Screwed into eyepiece barrel.
  • One part of the filter cell is rotatable, allowing brightness adjustment for comfortable viewing. 
  • Single combined filter unit allowing the highest image quality and for no internal reflections. 
Description

These double polarising filters can be rotated against each other to always be able to achieve comfortable brightness level for moon observations, independent of moon phase. The Baader Double Polarising Filter can also be used for solar observations in combination with an objective sun filter from Astro Solar Film.

The double polarising filters can not be split into two individual single unit polarising filter components - both filters form a single unit. The reason for this is to keep the filters perfectly aligned to each other, since if both filter housings could be separated, the filters may be tilted to each other, which would result in a degraded image quality and cause reflections.

IMPORTANT INFORMATION FOR OBSERVING THE SUN

Polarising and neutral density filters need additional filtering (for example, with a  Herschel Prism or Astro Solar Safety Film) for observations of the sun. Using these without the appropriate additional safety equipment can cause damage to the these filters and your eyesight.

Specifications
MANUFACTURER Baader Planetarium
SKU (#) 2408340 (1.25") / 2408344 (2")
WEIGHT (KG) 0.1
TRANSMISSION RANGE full Spectrum
FILTER THICKNESS (WITHOUT CELL) 2 mm
AR-COATING Phantom Coating® Group, planeoptically polished
SPECIAL FEATURES double polarizing filter for stepless brightness adjustment
FILTER SIZE 1.25" & 2 "
FILTER USAGE Lunar, Planetary, Solar, Speciality
FILTER MOUNTED Double mounted (LPFC 6mm) - total height 15mm
TYPE OF FILTER Neutral Density, Polarising
SINGLE OR SET? Single Filter
FILTER SHAPE round