Cloud Break Optics

48mm Large Photographic Field Flattener for 2.5" Focusers (SFF3-25-48)

48mm Large Photographic Field Flattener for 2.5" Focusers (SFF3-25-48) - Main image
$159.36 $249 In stock

Category: Astrophotography Accessories

Description

Large Chip flattener for 2.5” focusers - 48 mm attachment

This flattener is made for our f-7 refractors. It threads to the rear of the 2.5" Stellarvue or Feather Touch focusers. This flattener uses an over-sized 48 mm camera attachment thread. Using one of the over-sized 48 mm T rings, a DSLR camera may be used with this field flattener. This provides a completely threaded mounting solution for larger chip cameras when used a 2.5” focuser. When using a CCD astro camera, spacer rings and/or extension tubes may be required. If you are not sure about your particular requirements please contact us here at Cloud Break Optics.

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Customer Reviews (5.0 / 5 · 5 reviews)

Owen Z. ★★★★★

The 48mm thread fit perfectly onto my 2.5" focuser without any adapter, and the stars are pinpoint sharp all the way to the corners of my APS-C sensor. Made a huge difference in my f-7 refractor images.

Mia ★★★★★

I was worried about vignetting with my APS-C sensor, but the 48mm clear aperture on this flattener eliminated that completely. Stars are sharp right to the edges of every frame now.

John A. ★★★★★

Finally got my larger chip camera to work without those ugly corner stars. The threads matched perfectly with my focuser, and the extra 48mm opening made all the difference for my imaging train.