10" f/4 Imaging Newtonian OTA
10" f/4 Imaging Newtonian OTA


10" f/4 Imaging Newtonian OTA

Regular price
$ 778.00
Sale price
$ 778.00
Unit price

This item is out of stock but you can place an order now and we’ll ship when it becomes available.


iOptron’s 250mm (approx. 9.8") f/4 Newtonian optical tube assembly (OTA) with a fast F/4 focal ratio is perfect for imaging deep-sky objects with a DSLR or dedicated astronomy camera. The 3.25" Crayford-style focuser, dual split-hinged mounting rings, an 8x50 straight-through finder, and an 13" Vixen style dovetail plate make it ready to attach to your mount and start using.


  • Dual speed 3.25" Crayford-style focuser with 1.25" adapter iEAF ready
  • BK7 optical glass primary mirror with a protective quartz layer
  • 8 x50mm finder scope
  • 13" Vixen style dovetail plate with solid full circumference mounting rings
  • Front dust cap
  • Optional iOptron iEAF Focuser (#8453)

Package includes
#6313 10" Fast Newt OTA

  • 10" Optical tube assembly
  • 8x50 mm straight-through finder with bracket
  • Tube mounting rings
  • 13" Vixen-style dovetail rail
  • 2" 35mm extension tube
  • Front dust cover



    Optical Design Newtonian
    Clear Aperture 250mm
    Focal Length 1000mm
    Focal Ratio f/4
    Focuser Dual speed Crayford-style
    OTA Length inches
    Outside diameter 12 inches
    OTA weight 34lb. 1oz
    Extension tube 2" diameter 35mm L
    Warranty One year limited

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