Thousand Oaks glass solar filter, this is part number #3500 and is a 2+ grade glass filter. I used this one my William Optics Zenithstar 66mm. It should also fit similar scopes such as the AT66, etc. I have already applied the felt liner inside the filter for the 66mm scope. I'm including an additional strip of felt if you need to make adjustments for fit. I believe these filters have been discontinued by Thousand Oaks in favor of the film filters. Personally, I prefer a glass filter, but am getting rid of these since I have a Lunt wedge on order and will no longer need a white light filter for the objective. Price is $45, via PayPal. The price includes PayPal fees and USPS priority mail shipping costs in the CONUS.
- Condition Excellent, like new
- Location Naperville, IL, USA
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