Need some help: Eyepieces for 10" Dob
Howdy folks.
Have been reading a lot of threads about eyepieces and other people's recommendations. My apologies for starting yet another one, but I really would like some advice and feedback on people's usage of eyepieces.
I have a 10" collapsible Sky Watcher Dobsonian (not the go to), and two years after purchase believe it or not I am still using the original 10mm and 25mm super plossels that came with it (nothing wrong with that).
But I feel it's time to upgrade the eye pieces.
I have a x2 Tele Vue Barlow for a 1.25" eye piece.
I don't really have an objection to getting good quality eye pieces like an Ethos, but I do want to be sensible on cost v performace and so don't mind looking at "second tier" products. I would rather pay an extra $100 if the performance is worth it if you know what I mean. Fundamentally I do have budget constraints and want a sensible solution.
I feel I want to get three maybe four eye pieces over a period of time: high, medium and low. it would strike me that a low magnification, wide field of view eyepiece would expand my current range of eyepieces, and then I can purchase the higher magnification eyepieces and replace the plossels over time.
Some eye pieces stand out from my reading:
William Optics UWAN 28mm (2")
Tele Vue Nagler 4 17mm (2")
Pentax XW 10mm (1.25")
I can barlow the Pentax to get down to a 5mm.
I thinnk my main concerns which i want to get feedback on are:
1) What are peoples thoughts on mixing different brands across the spectrum to cherry pick the better performing products at those magnification points? Or is it better to stay within a range ie Naglers, Panoptics?
2) For a three eye piece set would would peoples recommendations be for focal lengths, and what would they be for a four eye piece set. I think I am tending to a four piece set but I would be interested on people's thoughts.
3) Bit hesitant to pick a low magnification eyepiece 30mm +. Would be interested to hear people's recommendations here as I think this may be my first purchase point.
4) One thing that confuses me a bit is the wider field of views being combined with higher magnification eyepieces. I wish to get an eyepiece that can give me a wide field of view, but does say thenew Ethos 21mm has a 110 degree AFOV make a 41mm eyepiece somewhat redundant ?
As an aside does anyone own the Ethos 10mm or 21mm and do you think they are worth the money compared to other products? Or are they a complete luxury?
5) I have read about the issue of coma with dobsonians. My focal ratio is 4.7. Is it wise to get a paracorr to use with the lower magnification eyepieces?
Thanks and look forward to your feedback.
|