Celestron Omni 40mm Plossl vs Celestron Omni 56mm Plossl: specs compared
Updated 05 September 2026.
4
specs differ
Celestron Omni 40mm Plossl and Celestron Omni 56mm Plossl differ on 4 specs: focal length, apparent field of view, barrel size, eye relief.
| Spec | Celestron Omni 40mm Plossl | Celestron Omni 56mm Plossl |
|---|---|---|
| Focal length | 40 mm | 56 mm |
| Apparent field of view | 40 degrees | 47 degrees |
| Barrel size | 1.25 in | 2 in |
| Eye relief | 31 mm | 52 mm |
| Optical design | 4-element Plossl | 4-element Plossl |
Questions and answers
How do Celestron Omni 40mm Plossl and Celestron Omni 56mm Plossl compare?
Celestron Omni 40mm Plossl and Celestron Omni 56mm Plossl differ on 4 specs: focal length, apparent field of view, barrel size, eye relief.