TPO 6" f/4 Imaging Newtonian OTA

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TPO 6" f/4 Imaging Newtonian OTA
Item # OS-6IN
7 Questions(s)

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  • Aperture: 6"
  • Focal Ratio: F/5
  • Focal Length: 610mm
  • Highly portable imaging specialized newtonian
  • Lightweight and compact for what it is


The TPO 6" f/4 Imaging Newtonian OTA isn't just an excellent imaging telescope, it's a portable and affordable excellent imaging scope. Like all TPO Imaging Newtonian's, the 6" model is an ideal scope for anyone looking to take their first steps from visual astronomy into astro-imaging as a hobby. TPO's 6" F/4 Imaging Newtonian operates at a high level and is lightweight enough to be a viable choice with almost any equatorial mount, meaning that you have a wide array of options in terms of mounting and tripod selection. The optics on all TPO Imaging Newtonians consist of a parabolic primary mirror and an elliptical secondary, or diagonal. The mirrors are made from B270 white water optical crown glass, which is more thermally stable than glass traditionally used on other reflectors. A 91% aluminum coating is applied, and then over-coated with a layer of quartz for the ultimate in durability. The primary mirror cell is very sturdy, and has six collimation knobs that can be adjusted by hand with a push or pull of the knob. Collimation is made even easier due to the center spot marked on the primary mirror. The diagonal mirror is held in place with a thin four-vane spider.
Additional Information

Additional Information

Manufacturer TPO
Telescope Series TPO Imaging Newtonian
Optical Design Newtonian Reflector
Mount Type None - Optical Tube Only
Warranty 2 Year Warranty
Telescope Aperture 6"
Telescope Focal Length 610mm
Telescope Focal Ratio f/4
Optical Tube Outer Diameter 7.25"
Length of Optical Tube 23"
Optical Tube Weight 10.5 lb. OTA only, 13.5 lb. with all accessories
Optical Coatings Aluminum
Tube Color or Finish Gloss White
Limiting Stellar Magnitude 13.4
Diagonal Included? No - Not Required
Finder Included 8 x 50 Optical Finder
OTA Mount Type Dual Rings
Included Items

Included Items

  • TPO 6" f/4 Imaging Newtonian OTA
  • (2) Hinged Rings
  • Vixen Dovetail
  • 2" TPO Crayford Focuser w/1.25" Adapter
  • 8X50 TPO Finder with Crosshair - White
  • Finder Bracket & Shoe
  • 35MM Extension Tube - 2"
  • Mounting Hardware
  • Hex Wrench for Screws
  • Dust Caps
Questions & Answers

Product Questions

TPO 6" f/4 Imaging Newtonian OTA... Can I use this as wide field visual scope on my 15lb capacity tripod mount ? Thanks, Karen...
Hi, what is the shipping weight? And the dimensions of the box it will be shipped in? Thanks.
Is there a focal reducer made for this telescope?
Is this telescope like the a AstroTech version? Thanks!
Is the mirror marked for easy laser collimation?
Is the included focuser capable of holding a Canon EOS 7D?
Hi, Can you please check and confirm whether the Orion AccuFocus mounting plate works with this TPO 6" F/4? Thanks.
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