About this product
Part Number: FR2DT
DayStar 2" 0.5x Imaging Focal Reducer
DayStar's Imaging Focal Reducer provides more field of view for your images.
The reducer is designed for 2" drawtubes and has a clear aperture of 36mm.
The standard M42x0.75 T-thread accepts camera-specific T-rings to mount your imaging system or DSLR.
Also includes a separate T extension tube for even more reduction.
With a T-mount camera connected directly to the reducer, the focal length is reduced by half (0.5x). Add the 20mm extension tube for 0.33x.
Combine the Daystar T-thread Interference Eliminator (sold separately) with the reducer for an interference-free 0.38x.
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 2/3" monochrome CCDs such as ICX625, ICX655, IMX250, IMX264.
- 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.
- 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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