-40%
SHARPSTAR | 20032PNT TELESCOPE
$ 2010.96
- Description
- Size Guide
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)