TS Optics Focal reducer 0.5x - 2 inch filter thread

The TS optics 0.5x reducer shortens the focal lengths of the telescope by 50% and doubles the lens speed and field of view. This advantage can be used visual and phototgraphical with cameras with smaller sensors.

Due to the doubled lens speed, the exposure time is reduced even to a quarter!

The adaptation

Just thread the reducer into the 2" filter receptacle of your photo adapter or eyepiece. The reducer has a suitable thread.

Photographical application

Please consider that the TS Reducer does not correct image distortions like coma, field curvature or astigmatism. Newtonian coma will even be increased by the wider field, so that we do not recommend it for systems faster than f/6.

The sensor diagonal can be as large as 30 mm without parts left unlighted.

Visual observations

You can use all 1.25" eyepieces. For adaption, screw the reducer into the 2" filter thread of the 2-1.25" adapter.

At 2" eyepieces, you can use the reducer directly for models with max. field stop diameter of approx. 40 mm. Larger eyepieces will show vignetting.

Delivery contents

• Reducer with filter thread
• Transport box and protective covers