Aero ED vs Panaview?

[starscy]

Does anyone know if replacing a Panaview 38mm 2" eyepiece with an Aero ED 40mm 2" will be a worthwhile upgrade for either a fast (f/5) or slow (f/9) telescope?

[John]

At F5 the Aero ED will be better corrected at the edges of the field of view than the Panaview, though still not sharp right across. At F/9 the difference would be minimal, if anything.

The exit pupil of a 38mm or 40mm eyepiece at F/5 is rather too large really - 32mm would be a more effective focal length.

[scarp15]

I use to have a low power Aero ED eyepiece for a while. The contrast was good and star fields were sharp in the centre but distinct seagulls formed to the edge of field and that was with a well collimated F10 SCT. So there may be some improvement in contrast but little else and I do not know how it might perform at F5.

[great_bear]

Recommend you read this Stargazers Lounge review here <click>

[alan potts]

I liked the areo 40mm because it is light but I got rid of it because I didn't like the edges in my F7 APM and it was even worse in the Mac Newt. I know the exit pupil was too large but you still try it.

Alan.

[alan potts]

Great Bear,

Looked at the review but i don't totally agree with it. However i was making the comparison at F5.3 against the Panoptic which is not fair and there is only going to be one winner of that head to head. It is a shame that they are not 140 quid.

It was a well written review though.

Alan