Astro-Tech 20mm 100° field waterproof XWA 2" eyepiece

With my Fast 100mm F4.5 Achro RFT I did a side- by- side test with the Astrotech XWAS 20mm 100 degree and a 23mm Celestron Luminos 82 degree . First surprise was that the Astrotech required about 3/4 inch more in travel than the Celestron. My daylight target was a brick building 50 yards distant The math said the Astrotech would have a 6% increase in FOV over the Celestron, however the FOV was the same. The main difference was that the Astrotech had much better edge correction probably due to its 9 elements over the Celestrons 6. In addition it provides a 15% increase in magnification while reducing the exit pupil 12% which is great for my Bortle 7 skies. Final comment great build and optical quality at a fantastic price. (Posted on 4/1/2022)

Orion nebula, M42, Trapezium 4 stars were looking good at 75x, nebula clouds visible, 12" dob, 1500mmFL. Maybe stars at edge of view were at a different focus, but my quick use tonight was not with a perfect sky. Just nice to roll down the eyepiece cup, put my glasses up to it and fall into the star field. (Posted on 1/30/2022)