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SQA55 Parameters |
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Aperture size |
55mm |
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Focal length |
264mm |
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Focal ratio |
f/4.8 |
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Objective lens |
Quintuplet petzval APO（One piece of SD glass, one piece of ED glass） |
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Format specifications |
44mm |
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Aperture blades |
14 pieces |
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Graded Aperture |
f/4.8-f/22 |
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Closest Focus Distance |
5m |
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Focusing mode |
Manual focus |
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Filter Diameter |
M67 |
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Total length |
316mm (inclulding dew shield); 244mm (without dew shield) |
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OTA weight |
1.84kg |
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Total weight (including handle & dovetail plate) |
2.18kg |
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Rear-end adapter |
M48*0.75 (with M48×0.75 filter thread) |
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Rear-end connection distance |
Support 50-60mm range (Recommended connection length is 55mm) |
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Standard package items |
a SQA55 OTA, a military-grade waterproof hand-carrying case |
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Product Size Diagram |
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SQA55 AFkit Electronic Focuser Assembly Diagram |
