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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
Substrate: Optical Glass
Brand SVBONY Model SV555 Objective Type Petzval Design（5 Elements in 3 Groups) Aperture 54mm Optic Coated FMC Focal Length 243mm Focal Ratio f/4
Another great benefit of ultra-wide eyepieces - like the Explore Scientific 82 Degree Series Telescope Eyepieces - is the ease with which you can gaze
S2: 22 x 20m = 7hr20m189 x 5m
Sky Mentor Dew Shield & Bahtinov Mask for Seestar S50 - Metal Observing Chairs Substrate: Optical GlassSky Mentor S50 Dew Shield & Bahtinov Mask Dew Shield to protect the Seestar S50 objective lens from moisture and to block stray light from hitting the lens and decreasing contrast. Bahtinov Mask for precise focusing Interface: 50mm
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