Astronomy Specialist
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M42 EXTENSION TUBES (5mm-10mm-15mm-20mm)

$49.00 AUD
SKU: F9160A

Testar

  • M42 x 0.75 Male
  • M42 x 0.75 Female
  • Optical thickness: 5 - 20 mm

 

This adapter kit includes 4 extension tubes with male and female T threads (M42 x 0.75). The optical length of these 4 adapters is 5mm, 10mm, 15mm and 20mm. The internal barrel uses an anti reflection thread to absorb and minimise internal reflections.

 


 

Material

Aluminium alloy

Telescope connection

Female T thread (M42 x 0.75)

Camera connection

Male T thread (M42 x 0.75)

Optical thickness

5mm-10mm-15mm-20mm

Weight

55 gr

    Customer Reviews

    Based on 2 reviews
    100%
    (2)
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    J
    John Holgate
    Good quality

    Quality seems fine, threads are pretty smooth. Very handy to have for getting the correct backfocus for various accessories.

    J
    Jon
    Great!

    Good quality Now I can achieve correct backfocus on my Astro cameras.

    M42 EXTENSION TUBES (5mm-10mm-15mm-20mm).

    M42 EXTENSION TUBES (5mm-10mm-15mm-20mm)

    $49.00 AUD

    Optical design

    Image circle

    Focal ratio

    Aperture

    Focal length

    Optical thickness

    Optical thickness: 5 - 20 mm

    Threads

    M42 x 0.75 Male, M42 x 0.75 Female

    Cooled

    Colour or Mono

    Pixel size

    Sensor dimensions

    Resolution

    Sensor diagonal

    Quantum efficiency

    Read noise

    Fullwell capacity

    Bit depth

    FPS

    Camera backfocus

    Filter size

    Filter size

    Bandpass (FWHM)

    Bandpass (FWHM)

    Glass thickness

    Mount type

    Payload capacity

    Latitude range

    Dovetail saddle

    Slew speed

    Encoders

    Periodic error correction

    Counterweight shaft

    Azimuth adjustment range

    Internal diameter

    Illuminated diameter

    Compatible telescope external diameter

    Weight

    Length

    Width

    Height

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