Alpine Astronomical M43 7.5mm Extension Ring for Hyperion and Morpheus Eyepieces Fits between Eyecup and Eyepiece, Adds 7.5mm of Optical Distance, Threaded M43 Interior and Exterior Ends TELESCOPES-Other Eyepiece Accessories
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.