Field Flattener Design

This field flattener is fully multi coated on two element lens allowing the most efficient light transmission without sacrificing the precious collected light from your telescope.

Field flattener design.

While the field isn t as flat as i hoped for it is a lot better than no flattener. The field flattener is everyone s most common example of this negative power element that reduces the field curvature. Flat image field lens effect of a field lens for flattening the image surface 1. I had this same conversation with yuri.

Observation can be enjoyed with a sharp and clear image throughout the entire. Canon 10 x 42 l is wp 18 x 50 is all weather and swarovski el 8 5 x 42 el 10 x 42 and in astronomic telescopes. Field flattener lenses counteract the petzval field curvature of an optical system. Field flattener lenses in binoculars improve edge sharpness and lower the distortion.

Calculation approaches 2. A pretty significant and real telescope. Either use of a curved detector or sacrificing much of the exquisite field quality by using flat detector. I managed to get a tak toa 67 to work acceptably with my tec180 at 112 mm.

Field flattening 2013 12 03 herbert gross winter term 2013. As in the schmidt camera this design uses a spherical primary mirror and a schmidt corrector plate to correct for spherical aberration. It accomodates f5 to f8 refractor telescope. Schmidt camera field flattener good example for the use of a single lens flattener is the schmidt camera which is exclusively a photographic instrument its only remaining primary aberration is strong field curvature.

In this cassegrain configuration the convex secondary mirror acts as a field flattener and relays the image through the perforated primary mirror to a final focal plane located behind the primary. You will see bright and sharp image across the entire field. Field flattener lens is a type of lens used in modern binocular designs e g. Advanced lens design lecture 8.

This advanced lens design provides consistent edge to edge sharpness while compensating astigmatism and coma aberration at the same time. Nikon s field flattener lens system is an optical system that minimizes the curvature of field across the entire optical system. So i ve shown a ray trace here of a 2 millimeter telescope. Without field lens 2.

And conveniently it s one that s easy to understand even without the coefficients. If i remember correctly he said something like 100 mm would be the most.