Hutech Astronomical Products
Equipment for the Serious Amateur Astronomer

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  • Works with objectives between 300 - 800mm focal length via adjustable lens barrel
  • Fully covers 35mm full format sensors
  • M57 male on objective side
  • M57 female on camera side
  • Back focus : 55mm

Sample configurations:

  • 7108 - 7923 - 5005 - [Canon DSLR]
  • 7108 - 7923 - [M49.8-STL AD] - [SBIG STL camera]

7000 may be used in place of 7923 but a 5mm adjustment is necessary (lens barrel must be pushed in 5mm)

Each index mark is optimized to cover a 35mm full format sensor. For sensors smaller than APS-C sized sensors, the lens barrel should be extended out around 1.5mm.


Part #7108
1.08x DG Multi Flattener
2018-01-03