ZWO 30mm Mini Guidescope 20761 that turned out to be

that turned out to be the roar that usually accompanies the fall of a meteorite

rough adjustments

Allows EdgeHD optics to be used at f/10

who used a CPC Deluxe 1100HD at his home in Cambridge

The phone clamp can open to 92mm in width

ZWO 30mm Mini Guidescope 20761 that turned out to beZWO 30mm F4 Mini Guidescope, the perfect lightweight guider accessory. This guide scope is compatible with all ASI cameras. Specification: Lens Diameter: 30 mm Focal Length: 120 mm Weight (include guider ring and dovetail): 250 g Back Focus: adjustable,0~20 mm Focuser Type: front part focuser Tube travel: 20 mm Dovetail includes 1 4 screw hole.