Quote:
Originally Posted by Moontanner
I can hear the neighbours now.... The looks I get are strange enough as it is with the telescope and the brewery setup in the garage.
It's a good idea but I'll be saving that one for the very private yard I use occasionally.
Renato, thanks for the input. I'm definitely not looking at buying the 55mm plossl straight away (if ever now).
I did pull out all of my eyepieces and have a serious go with each of them while looking at the figures for each. While I'm happy with most of them for the basic stuff, there are a few problems with the views at the edge of field on the superviews that I'm not happy with.
Is it the scope or the eyepiece? I'll be stuffed if I know but I'll be keeping at it until I narrow down the source. If it turns out to be the eyepieces I'll be saving up for a couple of gooduns.
It's funny you mention the lack of a 20mm eyepiece. I was recently drooling over the 21mm Ethos and thinking it would be a useful bit of kit.
On it's own for DSOs and coupled with the powermate for planetary/lunar use.
The Explore scientific offerings looks the goods also.
Anyone want to give me a couple of grand for doing nothing?
Clear skies. I'm getting back to work.
|
I have the 30mm Superview projection eyepiece, and it has bad edge problems compared to the 32mm GSO 2" SuperPlossl, which may explain some of your dissatisfaction.
Basically though, you have to remember that unless you spend lots of dollars, edge performance on wide angle eyepieces may be problematic, though things are much better now than when I first started with them 20 years ago.
I found over a 1000 galaxies in my C8 using just a 1.25" 20mm Erfle, where its edge performance being somewhat poor, didn't bother me. A few years ago I bought one of those flat field 19mm 1.25" eyepieces made under various brand names, which gave much better edge performance (cheapest one is the Orbinar one, though I have the Smart Astronomy one).
I also have the ultra wide angle Celestron 23mm 2" Luminos - eye relief is a bit shallow, and the eyepiece is very, very heavy. It gives good views, but for galaxy hunting I'd use my earlier, less awkward to use, 19 or 20mm eyepieces.
I've never looked into an Ethos - but I know that it is very heavy. Having it sitting in a Powermate would worry me. I hate it when I have a heavy eyepiece in the SCT, and inevitably something in the diagonal comes loose and the eyepiece swings upside down. I tend to save the heavy eyepieces for my bigger dob.
Regards,
Renato