Product Details

• Description
• Specifications
• Included Items
• Reviews

• The BORG 55mm F3.6 Astrograph is a very unique portable telescope. Boasting a small size for easy transportation (including airline and overseas expeditions), this astrograph is the perfect telescope for those needing a portable, high-quality optical tube.

  • 55mm aperture
  • 6-element advanced optical system, including one fluorite
  • Japanese-made high quality carbon fiber tube
  • Borg helical focuser
  • M57 camera rotator included
  • Back focus : 60mm from M57 camera rotator thread

• specifications

  Aperture	55 mm (2.25")
  Back Focus	60mm
  Corrected Image Circle	43mm
  Dawes Limit	2.11 arcseconds
  Focal Length	200 mm
  Focal Ratio	f/3.64
  Highest Magnification	110x
  Light Gathering Power	62x
  Limiting Magnitude	12.5
  Optical Design	Petzval Refractor
  Tube Diameter	60mm
  Tube Length	190mm
  Tube Weight	1.8 lbs

• included items

  • BORG 55FL F3.6ED Astrograph Optical Tube
  • M57 camera rotator
  • Mounting bracket