Bradley connor Posted April 13, 2022 Share Posted April 13, 2022 (edited) Hi sorry for poor image quality, when I shine a light on My secondary mirror it gives of a weird tint with a circle in the centre of the mirror like In the photo any idea why the mirror looks like this? Could it be the coating or a thin layer of dust? Edited April 13, 2022 by Cornelius Varley text colour Link to comment Share on other sites More sharing options...
Peter Drew Posted April 13, 2022 Share Posted April 13, 2022 Rule 1) Never shine a light on to an aluminised surface. 🙂 Does the primary mirror have a centre spot?, this might be reflected in the image. Link to comment Share on other sites More sharing options...
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