Orion 52085 instruction manual Appendix B. Field of View Quick Reference Guide

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Appendix B. Field of View Quick Reference Guide

For your convenience, refer to the list of common telescope focal lengths and their corresponding fields of view provided by the StarShoot Pro. The angular field of view is shown in arc-minutes. The image scale shows the relative size of two reference objects; the Moon and the Orion Nebula.

Telescope Focal Length	Angular Field of View	Image Scale of the Moon	Image Scale of M42
400mm	208.2' X 135.9'

500mm 166.6' X 108.7'

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600mm

750mm

900mm

138.8’ X 90.6’

111’ X 72.5’

92.5’ X 60.4’