If you own a 1600GTO mount and wish to use the PASILL4L or PASILL4 that you already own, you will need to substitute this adapter for the one that originally came with your Polar Alignment Scope. It was designed to be used with the 1.79" thread diameter on the back plate of the 1600GTO.
If you own the PASILL4 and would like to add the new LED cable (CABLED3) as well, you may wish to consider the full PASILLKIT-179. This cable will enble you to power your illuminator directly from the control box and will eliminate the need for battery packs and intermediary cables.
Please note that we cannot guarantee that the adapter will fit all Losmandy polar scopes from prior years.
Note: The Q16030 is shown as silver for easy identification. It is annodized black as a finished product.