Lunt LS6CaKMDd2 Ca-K Filter in 90° star Diagonal

Lunt Calcium-K Module - LS6CaKMDd2

Calcium-K module in star diagonal, for using normal astronomical telescopes up to 100mm aperture and up to 540mm focal length as Ca-K solar telescopes.

This Calcium-K module transforms your normal astronomical telescope into a Ca-K solar telescope. It will be very easy: Put the Ca-K module into the 2" focuser of your telescope, and you are ready for solar observing in the light of the Calcium-K wavelength.

Internal narrowband filters allow for a <2.4 Angstrom bandwidth. The Ca-K wavelength is at the edge of the visible light spectrum for human eyes, so for many people visual observing is difficult. However, all details could be captured photographically.Therefore the Ca-K Module is optimized primarily for imaging.

For telescopes up to 100mm aperture and up to 540mm focal length. For imaging it will be better to use a bigger Ca-K module.

The Ca-K module is in a 90° star diagonal, for 2" focuser on the telescope side and with T2 connection and for 1.25" eyepieces on the eyepiece side.