» Support Center » Knowledgebase » My Celestron Ultima and Regal spotting scopes have threads in front of the objectives. What sizes of photo filters do they use?
 My Celestron Ultima and Regal spotting scopes have threads in front of the objectives. What sizes of photo filters do they use?
Answer These scopes aren’t built to use with filters. The threads are intended for assembly purposes and subduing reflections in the tube only and not for filters. We don't have any specifications for the threading.

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Article ID: 2238
Created On: Jun 17 2009 09:53 AM

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