Imaging Focal Reducer


Imaging Focal Reducer

Regular price
$ 285.00
Sale price
$ 285.00
Unit price

This item is out of stock but you can place an order now and we’ll ship when it becomes available.


DayStar's Imaging Focal Reducer can give you more field of view in your images. 2" to T mount, with included T extension tube for even more reduction.

With a T-mount camera connected directly to the reducer, the focal length is cut in half - 0.5X. Add the 20mm extension tube for 0.33X. Even better is to combine the T-thread Interference Eliminator (sold separately) with the reducer for an interference-free 0.38X effect.

Please note that the obtainable field of view is usually limited by the etalon clear aperture; Quantum filters will result in a larger usable field than Quark or Ion.

Allows full disk imaging with SR127 and 2/3" monochrome CCDs such as ICX625, ICX655, IMX250, IMX264.



Focal reducer specifications:

Four elements in two groups.

36mm clear aperture.

Front: Male 2" eyepiece drawtube.

Rear: Male T thread (M42x0.75)

Flange to flange distance: 5mm.

Overall length: 38mm.


Extension tube specifications:

Front: Female T-thread (M42x0.75)

Rear: Male T-thread (M42x0.75)

Flange distance: 20mm

Overall length: 25mm

Knife edge baffles for superior contrast.

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