BAADER NEUTRAL DENSITY FILTER 2" L-500 5" field flattener for superior

5" field flattener for superior performance in astrophotography

The Fringe Killer coating is similar to a minus-violet filter

Designed for the GM4000 Mount

This bag will still fit the older versions but may be slightly loose

BAADER NEUTRAL DENSITY FILTER 2" L-500 5" field flattener for superiorBaader 2" Neutral Density filters are available in a range of optical densities to reduce the brightness of objects such as the Moon or the Sun (only with additional energy rejection filter), between OD 0. 6 which lets through 25% of light all the way to OD 3. 0, letting through only 0. 1% of light. Warning: Polarizer and neutral density filters need additional filtering (for example, Baader Herschel Prism or Baader Astro Solar Safety Film) before the