Cloud Break Optics

48mm Large Photographic Field Flattener for 3" Feather Touch Focuser (SFF3-3FT-48)

48mm Large Photographic Field Flattener for 3" Feather Touch Focuser - Main image
$174.85 $269 In stock

Category: Astrophotography Accessories

Description

Large Chip flattener for Feather Touch 3” focuser

This flattener is made for our f-7 refractors. It threads to the rear of the Feather Touch 3” focuser. This flattener uses an over-sized 48 mm camera attachment thread. Using one of the over-sized 48 mm T rings below, a DSLR camera may be used with this field flattener. This provides a completely threaded mounting solution for larger chip cameras when used with the 3” Feather Touch focuser. When using a CCD astro camera, spacer rings and/or extension tubes may be required. 

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Customer Reviews (5.0 / 5 · 5 reviews)

Natalie ★★★★★

I was worried about vignetting with my f-7 refractor, but this flattener keeps stars sharp corner-to-corner. Threading directly onto the Feather Touch focuser was easy, and the 48mm optic gives me plenty of room for my full-frame camera.

Steven J. ★★★★★

This oversized 48mm optic really pulls the stars tight across my APS-C sensor, with no visible falloff at the corners. I'm getting sharp stars right to the edge of the field now, which was impossible with my old setup. The threading was smooth and precise onto my 3" focuser, making installation a br

Henry I. ★★★★★

Threaded perfectly onto my Feather Touch focuser with no adapters needed, and the 48mm clear aperture gives me sharp stars all the way to the corners of my full-frame sensor. Definitely worth the upgrade for my f-7 refractor.

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