Askar 0.75x Reducer for the 91F Refractor - 91F-RED Clearance - Check Inventory at Manufacturer When Sold Through 25 Abbe condenser with iris

25 Abbe condenser with iris diaphragm concentrates and focuses the lower illumination for enhanced viewing making the CM2000CF Celestron microscope an excellent tool for labs

Leg diameter: 70mm

127x Secondary Mirror Obstruction 85 mm (3

Celestron has coordinated with the master lunar cartographer Ralph Aeschliman on a two-sided Moon Map

Askar 0.75x Reducer for the 91F Refractor - 91F-RED Clearance - Check Inventory at Manufacturer When Sold Through 25 Abbe condenser with irisThis 0. 75x APO reducer takes the Askar 91F's focal ratio down to f 5. A shorter focal ratio allows the telescope OTA to have a wider field of view and faster exposure times, making it suitable for capturing large areas of nebulae, star clusters, and faint, fast moving celestial objects. The 0. 75x reducer adopts a triplet design and supports a 44mm full frame image circle. The overall weight is 0. 23 kg. The back focus from the M48 thread is a