Daystar Filters Imaging Focal Reducer
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Daystar Filters Imaging Focal Reducer - FR2DT
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.
Specifications:
| Focal Reducer Specifications | |
| Four elements in two groups | |
| Aperture: | 36mm. |
| 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. | |