Altair 2 inch Magnetic Filter Holder - M48F - M54M V2
Enables connection to flatteners and reduers with M48x0.75mm male thread, such as Altair PlanoStar or Starwave, and Altair or other cameras with M54x0.75mm female thread.
Optical path length is 17mm, therefore you need to incorporate this amount in your spacing calculations.
The maximum height the filter can protrude from the surface of the slider is 6.85mm. The threads of the filter are buried, therefore this measurement does not include the threads of the filter. There is allowance for maximum filter thread depth of 3.6mm.
Includes a 2" filter holder/slider. Additional 2" and 1.25" Filter Sliders are available separately.