10" F/4.7 Modified Skywatcher Reflector, 38mm Orion Q70, 17mm Modified Ultima LX, 10mm TeleVue Delos, 7mm Pentax XL.
Vixen 140mm Neo-achro, 2" AP Maxbright diagonal, 40mm Orion Optilux, 35mm, 30mm, 18mm, and 15mm Ultrascopic/Ultima, 28mm & 20mm ES 68, 19mm TV Panoptic, 5.5mm Meade UWA, 2.4x 2" Dakin barlow (prototype barrel),1.6x Antares barlow.
Quote:Thanks Mark,From comparing it with the 8.8mm ES82 do you think it has the same optical design. The old Meade 5000 UWA and the ES82 have that "fishbowl effect" (at least that is what I recall some people calling it) which I don't mind but is noticeable. Did you see that in either the 8.8mm ES82 or the 5.5mm Meade UWA? The Meade 4000 UWA did not have the fishbowl effect.Dave
Quote:Quote:Thanks Mark,From comparing it with the 8.8mm ES82 do you think it has the same optical design. The old Meade 5000 UWA and the ES82 have that "fishbowl effect" (at least that is what I recall some people calling it) which I don't mind but is noticeable. Did you see that in either the 8.8mm ES82 or the 5.5mm Meade UWA? The Meade 4000 UWA did not have the fishbowl effect.DaveHi Dave, ASAIK, there was no "fishbowl" effect at all when looking through the 5.5mm Meade WP UWA. The views looked flat.
Quote:I am not too clear what you mean ?
Quote:Sorry, I don't know how else to explain it. I wish I did. Stars are sharp to the edge in these eyepieces, but the "fishbowl effect" I guess would mean that the field is not necessarily "flat". I would describe it more as a "folding" of the field such that you almost feel like the center of the field is closer to your eye and the edges are wrapping up around you. But it sounds like the field is flat in the 5.5mm Meade UWA so perhaps these are a new or modified design too.
Quote:80% is how I'd call it performance wise with the Meade vs XWs and such for lunar-planetary with very good seeing. Less than that they show about the same. On DSOs it's 90%. The Meade is very good in my Lunt 60 and I find it's easy on the eye. Highly recommended. David
Quote:Salway incorrectly described the problem as astigmatism, but he must not have bothered to check for FC. I did. I find the ES 14mm 82* absolutely flat of field at the edge, but simply not at the same plane as the center of field. Therefore, it's not astigmatic, but it does have field curvature.
Quote:Still, I appreciate the 80% statement. I prefer 100%, and for me, looks like I've already got it.
Quote:My skies are often clear, but notoriously unsteady, with frequent jet stream turbulence, so high power is less seldom an option, and my 7mm T6 is my standard highest power to apply to a target.
Astronomer for the People. "Taking Chaos out of the Cosmos" "There's an amazing universe all around us...EXPLORE IT!!!" So many galaxies, so little time!
Overall, the view of Jupiter in this eyepiece was extremely SHARP and very CONTRASTY. The color tone was neutral and I was really liking this eyepiece in a huge way! I never even intended to get this eyepiece for planets and only wanted it for deep sky, but after using it, I would definitely use it on planets again if I wanted to. Another thing I did was let Jupiter drift out from the center to the following edge and the planet itself remained very sharp out to the 90% mark, which is excellent IMO. One last thing I did was look at M-37 in Auriga and every star from edge to edge was extremely sharp looking. This EP is going to be a deep sky favorite!!!!