This kit (STDT1) will allow you to attach the Nikon Coolpix with a 28mm lens to a standard 1.25 inch eyepiece with a removable eyeguard, such as a Meade Series 4000 Super Plössl.
The Digi-T system is quick, secure, and easy to use. The rubber eyeguard is removed from the eyepiece, The Digi-T threaded ring is slipped over the top of the eyepiece and the 3 set screws are tightened (with the included wrench) into the groove left vacant by the rubber eyeguard, the step ring then couples the Digi-T ring to the camera.
Very good condition. New they go for $60 plus shipping, yours for $40 shipped in the CONUS. PayPal preferred.