iOptron Photron 250 RC OTA with Accessories

Brand: iOptron

SKU : IO-6113

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  • Ritchey-Chretien design telescope that is perfect for color or monochrome imaging
  • Coma, chromatic aberration, and spherical aberration-free optics!
  • Large 250 mm aperture with 2000 mm focal length

Product Details

  • The Photron 250 RC OTA by iOptron is a 250 mm (10-inch) Ritchey Chretien astrograph telescope OTA designed for today's astroimager for a complete imaging and visual system.

    Introducing Photron, Ritchey Chretien (RC) telescope OTA by iOptron: Photron instruments are built to facilitate today's astroimager in capturing the data necessary to create spectacular edge to edge sharp astroimages. To achieve this goal, The RC telescopes incorporate low-thermal expansion quartz primary and secondary mirrors with 99-percent reflective dielectric coatings. The RC optical design delivers coma, spherical , and chromatic aberration-free results; perfect for color and monochrome imaging. A fixed position primary mirror eliminates the image shift that occurs when focusing some telescope designs. The steel tube interior is equipped with 10 knife edge baffles to diminish contrast-reducing stray light from bouncing and improving the instrument for both visual and imaging uses.

    There are three extension rings provided for a flex-free solid extension as a means to take-up any unneeded back focus.

    Mounting Plates: The 250 mm model includes both top and bottom Losmandy-style dovetail plates adding rigidity to the tube while providing attachment points for the mount and other accessories. The 200 mm model includes 1 Losmandy-style and 1 Vixen-style mounting plates. The 150 mm model includes 1 Vixen-style mounting plate.

    The smooth dual-speed 2-inch Crawford focuser.


    Note: The diagonal and eyepiece are shown are for illustrative purposes only, but may be purchased separately. 


    OPT Product Number: IO-6113

  • specifications

    Aperture250 mm (9.8")
    Back Focus288mm
    Camera/Eyepiece Connection2" Nosepiece
    Dawes Limit0.46 arcseconds
    Focal Length2000 mm
    Focal Ratiof/7.9
    Free ShippingYes
    Glass TypeQuartz
    Highest Magnification508x
    Limiting Magnitude15.8
    Optical DesignRitchey Chretien
    Secondary Obstruction110mm
    Tube Diameter294mm
    Tube Length650mm
    Weight35.1 lbs
  • included items

    • iOptron Photron 250 mm (10-inch) OTA, RC10
    • Two 25 mm extension rings
    • One 50 mm focus extension ring
    • 1.25-inch accessory adapter
    • Two Losmandy-style mounting plates
    • Dual Speed Crayford focuser

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