SVBONY SV550 Telescope, 80ED F6 Triplet Apochromatic Refractor Telescope, SV209 Field Flattener, 1.0X Flattener Corrects The Field with SV210 Camera Angle Adjuster, for Deep Sky Astrophotography

Features

• Apochromatic Refractor for Celestial Observation: Use this APO OTA apochromatic refractor to reveal the wonders of celestial bodies; you can observe the Messier catalog targets; the common shooting targets M42 M45; the difficulty factor is simple
• Triplet Apochromatic Optics Structure: The triplet apochromatic optics structure (1 piece of S-FPL51 low-dispersion ED glass and 2 pieces of correction glass) effectively improves the blue-edge chromatic aberration problem of single-ED structure imaging
• Air-Spaced Triple Optical Design: The telescope uses an air-spaced triple optical design that virtually eliminates chromatic aberration; resulting in bright; high-contrast images for exploring galaxies with better graphic clarity
• Dual-Speed Toothed Focus Mount: This scope includes the use of a 2.5-inch magnesium alloy dual-speed toothed focus mount (1:10); which reduces vignetting on full-frame cameras and reduces the weight of the support platform
• SV209 Field Flattener for SV550: SV209 is a special field flattener for SV550 80F6 OTA; which can effectively improve the image quality problem of SV550 OTA fringe field curvature
• Maintains Focal Length and Position: SV209 keeps the focal length and focal plane position of the primary mirror unchanged while improving the field curvature problem
• Standard Back Focal Length Configuration: The package of SV209 is equipped with an M63 extension tube and an M48 adapter ring to ensure that the back focal length of the flat field mirror is the astronomical conventional 55mm length