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with a secure housing that helps protect the optics from dust and handling
ensuring reliable communication in large venues
most faint stars do not show up anymore
It is a good guide for tour guides
enabling perfect images with your instruments
SV193 2-Inch 0.8x Focal Reducer / Flattener for 102mm ED Refractor. Mounting Plate with a secure housing thatSVBONY SV193 2 Inch 0. 8 Focal Reducer Field Flattener for SV503 102ED The SV193 0. 8 focal reducer and field flattener improves imaging performance on the SV503 102ED by widening the field, reducing exposure times and correcting edge curvature for sharp stars across the frame. Standard 2" nosepiece for the telescope side; M480. 75 thread on the camera side. Supports full frame sensors. Supports standard 2" filters for adding light pollution or
