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TS-Optics PHOTOLINE 2" 0.79X 4-element Reducer and Field Flattener / Corrector for Astrophotography

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0.50 kg
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including VAT 20.00 % ( £34.83 )


TS Optics 0.79x Reducer and Field Corrector for astrophotography through APO refractor telescopes.


  • Reduction of the focal length 0.79x - exposure time goes to 62%
  • 4-element design for very good field correction
  • Easy telescope adaptation with 2" nosepiece
  • On the telescope side M48x0,75 female thread for 2" filters
  • Additional M54x0.75 male thread for telescope adaptions (only on older models, new models do not feature this)
  • Easy camera adaptation via male T2 - M42x0.75 thread
  • Perfect definition and field illumination for cameras up to 30 mm sensor size
  • Optimal for high resolving sensors and DSLR cameras (APS-C)

The TS 2" PHOTOLINE 0.79x corrector / reducer is an improved design of the well known Riccardi reducer. Its four element design offers good field correction that is superior to cheap 0.8x reducers.

Back Focus - distances from the T2-thread to the camera sensor depends on the focal length of the telescope:

  • Focal Length to 350 mm .... 70 mm
  • Focal Length to 420 mm .... 65 mm
  • Focal Length 450-500 mm ... 61 mm
  • Focal Length 510-600 mm ... 58 mm
  • Focal Length 610-700 mm ... 57 mm
  • Focal Length 710-790 mm ... 56 mm
  • Focal Length from 800 mm .. 55 mm

IC 1396 through TS Photoline 60mm with TSRED279 Reducer - Andrew Harrison

First light image from the scope of the relatively faint emission nebula IC1396 is shown below (Click on the image for higher resolution version):

This is a total integration of 2 hours (6 x 20 min sub-exposures) which indicates the potential of this scope for capturing extended nebula regions at great depth with speed.

Field correction: Photoline Reducer TSRED279

Camera: QSI 583wsg

Filter: Baader H-Alpha 7nm filter

Exposure time: 6x 1200 seconds

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T2 10mm Extension Tube - 10mm Optical Length
TS T2 Locking Ring for Fine-tuning the Length of Adaptations - 1.5mm
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