Optec Astro-Physics 2.7x24tpi Extension Tubes

Product Details

• Description
• Specifications
• Included Items
• Recommended Products
• Reviews

• These Optec extension tubes are made to fit an Astro-Physics 2.7-inch connection; these spacers will add either 0.5-inch, 0.75-inch, 1-inch, 1.5-inch, or 3-inch to your path length. 

  Each spacer has a clear aperture of 2.52-inches (64 mm) and threads on with 24tpi.

   

  These two sets are listed on the size tab:

  - - The 4-Piece set includes 1 each of the 0.5-inch, 0.75-inch, 1-inch, and 1.5-inch spacer lengths.

  - - The 5-Piece set includes 1 each of the 0.5-inch, 0.75-inch, 1-inch, 1.5-inch, and 3-inch spacer lengths. 

   

• specifications

  Back Focus	12.7mm
  Back Focus	19.1mm
  Back Focus	38.1mm
  Back Focus	76.2mm
  Camera Side Connection	Male 2.7x24tpi
  Telescope Side Connection	Female 2.7x24tpi

• included items

  Spacer Lengths:

  • 0.5-inch
  • 0.75-inch
  • 1-inch
  • 1.5-inch
  • 3-inch
  • 4-Piece Set: 1 each of the 0.5-inch, 0.75-inch, 1-inch, and 1.5-inches
  • 5-Piece Set: 1 each of the 0.5-inch, 0.75-inch, 1-inch, 1.5-inches, and 3-inches