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Seeing conditions often preclude the use of the 5.2, so I sometimes substitute the 7. It can be used a bit more often, but doesn’t provide quite the detail of the 5.2 when seeing is really good. The view through the 40mm is spectacular on extended objects. Its 2° field is almost half that of many finder scopes, making a finder scope unneccessary. Fig 23: My Accessories Drawer Pentax XL Eyepieces Red LED Flashlight Eyepiece Heater Laser Collimator 14 Holding the Eyepiece in Place The clamping scr