Guidescope

OTA Specifications:

• Aperture: 40mm
• Focal Length: 220mm
• Focus Ratio: f/5.5
• Objective Type:
  • Triplet Dual ED Air-spaced APO (Objective lens)
  • Sextuplet Refractor for full-frame astrophotography (with reducer)
• Overall length:
  • 145mm (photographic mode with focal reducer)
  • 160mm (observation mode without star diagonal)
• Helical focuser travel: 30mm
• Weight: 395g
• Back-end Adapter:
  • M42x0.75 (photographic mode)
  • 1.25" Adapter (visual observation mode)
• Thread Extensions:
  • Reducer Connection Adapter - 28mm
  • Extension 1 - 55mm
  • Extension 2 - 75mm
• Back focus:  83mm from end of Field Reducer
  • 55mm with Reducer Connection Adapter
• Accessories: 
  • FMA180 Body
  • Pair of tube rings
  • Finder scope bracket
  • Two extension tubes
  • 1.25" Adapter
  • Allen Wrench