Really nice images! There was some interesting areas on the surface today, which I seemed to be able to to view easier with my eyeball using various tunings. Marty, does the Lunt CAK filter simply plug in place of the scopes diagonal without the additional need of a front mounted etalon or ERF? I haven't delved into that world, but it would be interesting if I could simply put it in my Coronado scope (pre-Meade version) and unscrew the front mounted etalons. V/R Terry
Yessir, the Lunt CaK module has its own ERF system before its filters, up to a general rule of thumb of 100mm aperture (per Lunt). So for smaller scopes, its just a diagonal and filter that plugs in. Nothing else needed. Plop in the camera. For my larger apertures (120mm to 150mm), I do put a Baader 2" Blue CCD-IR block filter in front of it, to serve as a D-ERF that removes all the visible spectrum except blue and near UV, greatly reducing thermal load so prolong the filter's life. For my small ED80, I do not bother, the Lunt CaK filter again handles the heat up to 100mm aperture without anything extra.
Here's my ED80 with the Solarmax 60 II etalon & blocking filter, Lunt CaK module in the back and the Skybender with the Edmund Optics 430nm filter. Plug and play to jump between different narrowband options. My ED80 has become a tri-band modular system (hence the 3 disc imaging approach). And the IMX183 sensor let's me do full disc shots with room to spare at that image scale with the 600mm focal length nicely.
Edited by MalVeauX, 23 February 2020 - 05:31 PM.