William Optics Star 71-II is the successor to the well-aclaimed Star 71 imaging APO. Star 71-II is a f/4.9 air-spaced 4-element FPL-53 apochromatic refractor. Star 71-II's 45mm image circle is large enough to cover your 35mm full frame DSLR camera and provides pinpoint stars from edge to edge across the field of view. Focuser drawtube terminates in M48 thread which connects directly to DSLR T-ring, cooled CCD or filter wheel directly.

Star71-II Package Includes

• Star71-II f/4.9 Astrograph
• William Optics' patented innovative Bahtinov Mask Cap
• 2.5" 1:10 rack & pinion focuser
• 360º camera angle adjuster
• A set of guide scope rings
• A pair of mounting rings
• Vixen style dovetail bar
• Retractable lens shade

Optional

• M48 to Canon EOS T-mount adapter 
• M48 to Nikon T-mount adapter 

Star71-II Design Highlights

• 71mm f/4.9 4 elements air-spaced objectives aprochromatics
• Includes 2 FPL-53 ED fluorite elements
• 4 elements in 3 groups (2-1-1 configuration, patented design)
• Precision optics with STM coating
• Very sharp image with great colour correction across the 45mm image circle
• Designed specially for astrophotography

Cyclops Optics' Exclusive Fine Tuning Service

We offer fine tuning service for the telescopes to provide a smoother screws control and grant the telescope a premium quality touch. The fine tune service costs HK$400 (US$50). It's now waived for time-limited period.

Star71-II User Gallery

M42 by Jerry Huang

IC348 by Jerry Huang

M8 & M20 by Jerry Huang

Specifications

Warranty

7 days no question asked return if due to material or workmanship defects

2 years from William Optics

Cyclops Optics Ltd. is an authorised dealer of William Optics' products.