Long Perng 1.25" 6mm Long Eye Relief Eyepiece IR850 Imaging Light Suppression: Advanced coatings achieve

Light Suppression: Advanced coatings achieve an optical density (OD) of 4

Durable and Reliable Aluminum Design

If you're looking for a reliable way to mount your telescope

and you can easily to know the  current channel and other information from the display

But if you use filters from third party

Long Perng 1.25" 6mm Long Eye Relief Eyepiece IR850 Imaging Light Suppression: Advanced coatings achieveLong Perng introduce its 1,25" Long Eye Relief Eyepieces Long Eye Relief Eyepieces Model Number: DCS 6mm Focal Length: 6mm Eye Relief: 20mm Barrel Size: 1. 25 inches Field of View: 55 degrees Lens Construction: 7 elements in 4 groups Material: Aluminum Coating: Fully multi coated