Check the listing for details. GSO 2-inch Coma Corrector for MPCC Newtonian Telescope for Coma Correction pe66. Condition: New. Listed at 139.38 USD. Description GSO 2-inch Coma Corrector for MPCC Newtonian Telescope High Quality Astronomical Accessory for Coma Correction Description: - 3-piece modular design: 2" nosepiece with 48mm male thread, 2” eyepiece barrel that can be attached to optical nosepiece, support visually observable optimization. - M48 - M42 adapter interface. - Optimizing design can work well from F/3 to F/6. - It can reduce coma and field curvature. - It is designed for visual and photographic use. - Fully transparent optical elements (4 elements/2 lens groups) with an aperture of 43.9mm. - Back-focus spacing requirement is approx. 75mm from the shoulder of the 2" nosepiece to the image plane. - For visual use, connect the 2” eyepiece barrel to the main optical nosepiece. - For Canon/Nikon DSLR cameras (including a standard thickness camera ring with a 55mm rear focus and 108 wires), you will need a spacing of approximately 20mm. Package Included: - 1 x Coma Corrector Note: - The Newtonian telescope is not included. Payment Terms 1. We accept PayPal,Payoneer,Visa Card,Google pay,Credit card etc. 2. We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay. Shipping Terms 1. We will process the order within the handling time ,if you have any questions, please contact us via eBay message or email. 2. For remote regions of DHL/FedEx..., extra shipping costs might be charged. Usually it costs about 30USD-50USD. We will contact you if shipping company informed us your address belongs to remote area. Thanks for your understanding. Return Terms If you receive the item that not satisfied or defective, please do not open case and kindly notify us within 30 days. We will guide you the returning process for replacement or refund. Custom Duties & Taxes 1. It is buyers responsibility to cover the import duties, taxes.We do not charge any taxes and fees, and the possible taxes and fees will be collected by the platform or by third parties such as customs and carriers. 2. Please check with your countrys customs office and inform us what/how much should declare before shipping. Feedback 1. Please kindly leave us a positive feedback and 5 star DSR if you satisfied with our product and service. Please feel free to contact us firstly if you have any problem with your order, we are responsible and credible seller and will solve the issue it for you asap. 2. If you are dissatisfied for any reason, please dont be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers. On Nov 17, 2023 at 01:24:59 PST, seller added the following information: