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Best F/7.5 Focal Ratio

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Best 1 Astro-Tech AT100EDT
Astro-Tech AT100EDT

The Astro-Tech AT100EDT is a popular choice for astrophotographers seeking a portable and well-corrected refractor. Its 100mm aperture and f/7.5 focal ratio provide a good balance between light gather...

Portable Apochromatic Refractor 100MM Aperture Field Flattener F/7.5 Focal Ratio
8.7 Very Good
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2 iOptron RST 150EDT
iOptron RST 150EDT

The iOptron RST 150EDT is a robust apochromatic refractor offering a larger aperture for capturing fainter deep-sky objects. Its 150mm aperture and f/7.5 focal ratio provide a good balance between lig...

Apochromatic Refractor Dual Speed Focuser 150MM Aperture Planetary And Deep Sky F/7.5 Focal Ratio
8.5 Very Good
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