EP for TV binoviewer

I am looking for recommendations for an EP pair to use with binoviewer and 18" dob with tracking. I already have 35mm Ultima's, 25mm UO, 18mm UO, I was looking for pair at 13mm or below, the 12.5mm's UO did not work for me. I am blessed with steady skies in South Florida so I want to bump up the magnification. I need a good deal of eye relief at the higher mags.

Thanks,

Allen

You may find that the 35mm Ultimas will vignette in the bino. I had some vignetting in a pair of 32mm Meade SPs, but YMMV.

In the range that you are looking at, I've been very happy with a pair of 12mm Astro-Tech Paradigms, but I also have a pair of Denkmeier 14mm that are simply superb. The Paradigms have fairly long eye relief, and a 60 degree fov, while the Denks have a 65 degree fov and 20mm eye relief. Pricewise, they are in completely different classes.

Others to consider would be the 11mm Nagler Type 6, which I used to have and liked quite a bit as well, but it may lack the eye relief that you need. That's actually why I ended up selling my pair. You could also try to find a pair of 12mm or 10mm Radians (20mm ER, 60 degree fov), but I think that the 12mm have been discontinued.

Just some thoughts!

Doug
Midway, FL

The Delos, though I have not yet tried them myself, is supposed to combine some of the benefits of the Ethos design with a longer eye relief you are looking for. Alvin Huey, a noted deep sky observer in these parts, gave the Delos a very positive review:

Here is some info from Alvin Huey of Faint Fuzzies.

I did try the 6mm Delos (on loan from John Rhodes at OSP) along with my 6mm Ethos and 6mm ZAO-II. I looked at two objects, IC 1296 (galaxy next to the Ring) and Hickson 99. My 22" scope was used and the skies were NELM 7.2+.

I found that the Delos is between the ZAO-II and Ethos in light transmission and contrast. The Delos showed just a little more of IC 1296 and component E (mag 17.7) was a little easier to hold using averted vision than the Ethos...and just a little harder than with the Zeiss.

The differences between them were small, but noticeable. An observing partner confirmed my observations.