FF90 APO Flat-Field Apochromatic Refractor/FF90 APO Bundle M54 adapter the ideal choice for astronomy

the ideal choice for astronomy enthusiasts

EOS-T2 adapter without T2-extender is suitable for 17

4mm Focal Ratio Tele: F/5

Please refer to the diagram below to understand how ASI585MC/MM Air cameras match with various telescope image circles

The QE curve and readout noise are very important parameters to measure the camera's performance

FF90 APO Flat-Field Apochromatic Refractor/FF90 APO Bundle M54 adapter the ideal choice for astronomyLightweight & Compact Designed for Both Visual Observation and Astrophotography *Focus can be achieved within a back focus range of 4575 mm, measured from the M54M48 interface shoulder. Main Features Flexible Connectivity for Multiple Configurations Uniqueness 1. Lightweight & Compact The ZWO FF90 APO features a 90 mm aperture and 609 mm focal length (f 6. 8), offering an excellent balance between portability and performance. The optical tube weighs