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Description

Optical Tube Info
Optical Design Rowe-Ackerman Schmidt
Aperture (mm) 279 mm (11 in)
Focal Length 620 mm
Focal Ratio 2.22
Backfocus from front lens assembly 72.8 mm
Backfocus from included camera adapters 55 mm
Central obstruction diameter Not Included
Resolution (Rayleigh) 0.5 arc seconds
<table class="table-open"> <thead> <th colspan="2">Optical Tube Info</th> </thead> <tbody> <tr> <td>Optical Design</td> <td>Rowe-Ackerman Schmidt</td> </tr> <tr> <td>Aperture (mm)</td> <td>279 mm (11 in)</td> </tr> </tbody> </table>

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