FF90 APO Flat-Field Apochromatic Refractor/FF90 APO Bundle M54 adapter Please refer to the diagram

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

We recommend our ASI1600/ASI174 mono camera for Ha solar imaging

4mm Focal Ratio Tele: F/5

Ensure that the bracket is flush with the EAF mounting surface without any gaps

Please watch the picture below carefully

FF90 APO Flat-Field Apochromatic Refractor/FF90 APO Bundle M54 adapter Please refer to the diagramLightweight & 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