Askar 0.75x Reducer for the 91F Refractor - 91F-RED Clearance - Check Inventory at Manufacturer When Sold Through 127x Secondary Mirror Obstruction 85

127x Secondary Mirror Obstruction 85 mm (3

Multiple Readout Modes are special for QHY 16-bit Cameras (QHY600/268/461/411)

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The standard 2" barrel provides the full 72 degree field of view

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

Askar 0.75x Reducer for the 91F Refractor - 91F-RED Clearance - Check Inventory at Manufacturer When Sold Through 127x Secondary Mirror Obstruction 85This 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