Baader 2" Semi APO Filter
- Two filters made into one for maximum brightness
- Combines Fringe-Killer with Moon & Skyglow for Semi-APO contrast with refractors
- Non-ageing sealed coating edges
Baader Semi-Apo Filter
Combination of "Neodymium Moon & Skyglow" and "Fringe Killer" Filters
Time and time again we were made aware of customers who were combining our Neodymium Moon and Skyglow filter with our Fringe Killers to deliver amazingly colour-corrected images to achromatic refractors. This combination however did produce refelctions.
After analysing these reports we developed our Baader Semi-APO filter with IR blocker, a reflection-free combination of the Moon & Skyglow with a stronger coating of the Fringe killer. This result was a virtually colour-neutral image without the blue and red halos (violet fringing) and an increase to image contrast.
MANUFACTURER Baader Planetarium SKU (#) 2458399 EAN CODE 4047825009333 WEIGHT (NETTO) 0.062 TRANSMISSION RANGE multiple bands (see spectral image) FILTER THICKNESS (WITHOUT CELL) 1 mm AR-COATING Phantom Coating® Group, planeoptically polished FILTER SIZE 2 inch FILTER USAGE CCD, Color Correction, IR-Cut FILTER MOUNTED Mounted (LPFC 6mm) TYPE OF FILTER Bandpass SINGLE OR SET? Single Filter FILTER SHAPE round
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