SHARPSTAR | 20032PNT TELESCOPE

Description

• Adopt 200mm F3.8 parabolic primary mirror, short axis 90mm secondary mirror and 3" quadruplet 0.85x coma corrector to realize F3.2 fast focal ratio.
• Carbon fiber was used to create its lens barrel material, which is beautiful, durable and lightweight, which uses Pyrex materials is more stable than conventional reflective materials.
• The primary and secondary mirrors are all made of reinforced aluminum coating, and the reflectivity is ensured to be above 96%. The secondary mirror cross is formed once to ensure firm and not deformed.
• Equipped with 3" special geared focuser device to ensure the attachment when shooting without slipping, and smooth operation.
• Features whole CNC aluminum parts and hollow out type tube rings and a novel handle, making the overall look more close to the needs of enthusiasts.
• Includes a quadruplet image-field corrector, working combination with the OTA system, ensures full frame photography and excellent peripheral reduction control.
•Requires focuser end of M54x0.75 thread and 55mm of back focus. (M48×0.75 thread with 52mm back focus.)
Aperture:
200mm
Focal length/ ratio:
760mm/3.8
Primary mirror type:
paraboloid
Mirror material:
PZ33 (Similar as Pyrex glass)
Corrector type:
Quadruplet air-spaced
Correction lens focal reduction factor:
0.85
System focal length/ ratio:
640mm/3.2
Short axis diameter of secondary mirror:
90mm
Fully illuminated image circle:
44mm
Actual field:
3.76 degree (Full-frame)
Main tube Material:
carbon fiber
Main tube outer diameter:
280.5mm
Total length of telescope:
633mm
Net weight:
8.00KG
Gross weight:
9.46KG (Including tube cap, handle, tube rings and dovetail plate)
Resolution:
0.6
Focuser:
3-inch precision focuser
Visual Limiting Star Magnitude:
13.2
Focal plane:
55mm (Start from the end face of M54 thread)