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TPO 2" Focal Reducer - 0.5X

SKU : OS-FR2

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  • Connects to 2" nosepieces for CCD cameras and 2" threads on 2" camera adapters
  • Fits most 2" eyepieces for visual use
  • A 2" thread inside to connect with most 2" filters
  • Outside thread is M48 x 0.75.

Product Details

  • The TPO 2" f/5 Focal Reducer will help to lower the focal ratio of your optics. The outside thread connection of M48 x 0.75 will fit most 2" eyepieces for visual use, too! Now you can connect your CCD camera and any 2" threaded camera adapter, just by using the TPO 2" Focal Reducer. Guess what? It even allows the connection of most 2" filters, too!

    The actual reduction will vary a little over or under 0.5x depending on exactly where the focal reducer is placed in the optical path. The exact focal length specification of this reducer has not been provided by the manufacturer, but we estimate it to be approximately 101-103mm. Hence, the "working distance" of this specific reducer is estimated to be 51mm, i.e., this reducer will provide a reduction of 0.5x when the center of its lens assembly is placed 51mm from the focal plane of the eyepiece or imaging device. Move the focal reducer closer to the eyepiece/camera and its reduction factor will increase. Move it away and the reduction provided will decrease.

    By using additional spacers or extension tubes (sold separately), you can vary the amount of reduction you obtain with this reducer as follows:

    Extra Spacer Length Nominal Reduction Provided
    0" / 0mm
    0.50x
    0.25" / 6.4mm
    0.44x
    0.5" / 12.7mm
    0.38x
    0.75" / 19.1mm
    0.31x
    1" / 25.4mm
    0.25x

    TPO Product Number: FR2

  • specifications

    Optical CoatingsFully Multi Coated
    Warranty2 Year Warranty
  • included items

    • TPO 2" Focal Reducer - 0.5X

Product Reviews

Customer Reviews
4.0 Based on 3 Reviews
5 ★
67% 
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4 ★
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2 ★
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Filter Reviews:
    A
    12/02/2020
    Anonymous
    United States United States

    TPO 2" Focal Reducer - 0.5X

    Works nicely --- as expected at a reasonable price.

    DK
    01/17/2020
    david k.
    United States United States

    reducer lenses

    i have not used them yet . because of bad weather. but i have used others. the make better wide field views. and make nebula's and dim galaxeys brighter.

    KE
    11/26/2018
    Kambiz E.
    United States

    I’m not happy with my

    I’m not happy with my purchase, it distorts the objecs I observe