Cloud Break Optics

CR 0.73X Reducer for FSQ-106EDX4, CCA-250, and Mewlon 250CRS/300CRS/ (TKA82580)

CR 0.73X Reducer for FSQ-106EDX4, CCA-250, and Mewlon 250CRS/300CRS/ (TKA82580) - Main image
CR 0.73X Reducer for FSQ-106EDX4, CCA-250, and Mewlon 250CRS/300CRS/ (TKA82580) - View 2
$427.8 $690 In stock

Category: Astrophotography Accessories

Description

The Takahashi Reducer CR 0.73X is a is compatible with the Mewlon 250 CRS, Mewlon 300CRS, CCA-250, and FSQ-106EDX4 telescopes, providing a focal length reduction of .73X. The reducer produces a 44 mm diameter image circle suitable for medium format cameras and chips.

Specifications

Telescope with Adapter

 FSQ-106EDX4 with CR 0.73X RD106mm Mewlon 250 CRS with CR 0.73X RD106mm Mewlon-300CRS with CR 0.73X RD106mm CCA-250 with CR 0.73X RD106mm

Adapter Part Number

 TKA82580 TKA82580 TKA82580 TKA82580

Aperture

 106mm 250mm 300mm 250mm

Resolution

 1.09" 0.46" 0.4" 0.46"

Limiting Magnitude

 11.9 13.8 14.2 13.8

Light Gathering Power

 229x 1276X 1827x 1276x

Focal Length

 387mm 1825m 2160mm 910mm

Focal Ratio

 f/3.6 f/7.3 f/7.2 f/3.6

Image Circle Diameter

 35mm 35mm 35mm 38mm

Optical Type

 Double ED Quadruplet Dall-Kirkham Dall-Kirkham Modified Cassegrain

Tube Diameter

 125mm 280mm 324mm 306mm

Tube Length (With Lens hood retracted)

 675mm (580mm) 945mm 1045mm 870mm

Tube Weight

 7.0kg 12.0kg 27.0kg 22.8kg

Recommended Finder

 7x50 7x50 7x50 7x50

Metal Back Distance

 72.2mm 72.2mm 72.2mm 56.2
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Customer Reviews (4.6 / 5 · 5 reviews)

Hazel ★★★★★

Swapping this in on my FSQ-106EDX4 tightened up the stars in the corners noticeably compared to my previous setup. The 0.73x reduction is spot-on for getting wider fields without losing too much resolution. Took about five minutes to thread on and collimate.

Eva ★★★★★

I was worried about back focus with my FSQ-106EDX4, but the 0.73x reducer threaded on smoothly and gave me crisp stars across the full frame. The image circle is noticeably flatter now in my wide-field shots.

Madison S. ★★★★★

The 0.73x reduction on my FSQ-106EDX4 really opened up the field for wider nebulae shots without any noticeable star distortion at the edges. Took a bit of fiddling to get the back focus right, but the crisp results were worth it.

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