Now being used in the Condor Array Telescope in Chile, a project by Stony Brook University and funded by the National Science Foundation!
**International shipping note: Shipping has been very slow over the last several months, typically taking 8-10 weeks, except for Canada which has been 3-5 weeks.
These Filter Centering Masks will make it easy to center your filters
in a filter wheel, and will block any potential light leak due to the filters
being off-center in the filter disk seat. Simply place your filter
in the filter wheel disk, place the Filter Centering Mask over the filter
and fasten with screws. Sold in sets of 7 or 8 depending on the filter mask size.
Filter Masks for ZWO wheels work with any filter brand with the appropriate diameter.
Filter Masks for QHY wheels vary depending on the filter thickness (2mm or 3mm).
Filter Masks for Atik wheels - The Atik supplied O-rings must be used for 2mm thick filters.
Filter Masks for QSI wheels