Orthoscopics - Apparent Fields

[StarMan1701]

Just a quick question:

Does anyone know the apparent field of view of the University Optics HD orthoscopic or Baader Genuine Orthoscopic eyepieces?

Thanks, in advance.

Lee.

[russ]

I think they are 40deg AFOV.

Russ

[Doc]

I agree 40° but tack sharp.

[AndyH]

Quoted as 47 degrees.

Andy.

edit: don't know where I got those figures. Baader's site says 40 degrees for the whole range of ep's.

[russ]

I found these measured AFOV for the UO HD line:

UO ortho 6 - 40.3°

UO ortho 7 - 38.4°

UO ortho 9 - 41.5°

UO ortho 12.5 - 39.2°

UO ortho 18 - 41.5°

UO ortho 25 - 40.0°

There was another site that quoted 45° across the line. But on average it looks like 40°.

Russ

[johninderby]

The Baader Genuine Orthos are between 40 and 43 degrees as far as I know.

John

[StarMan1701]

Brilliant, thanks guys.

Lee.