Merlin66
22-12-2021, 11:07 AM
Either a 1.25" or 2' (preferred) version of a #21 Orange filter.
Looking to finalise a filter selection for the suppression of parasitic light in the MinSHG.
(I can get the usual set of six 1.25" filters for us$18 from ebay - but just need the #21 orange)
Can you help?
Looking to finalise a filter selection for the suppression of parasitic light in the MinSHG.
(I can get the usual set of six 1.25" filters for us$18 from ebay - but just need the #21 orange)
Can you help?