Quote:
Originally Posted by hoxygt
Dean would you suggest that range of eye pieces instead of say a GSO barlow?
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I suggested those because I hadn't checked what it came with, but I had a bit more of a look and noticed that it has 10mm and 25mm eyepieces: 65x and 26x respectively. I don't know what
type of eyepieces come with it though: check if they are plossls, and if so then they should be OK to begin with at least. If you then just got the barlow you would have 130x, 65x, 52x and 26x- which isn't a bad range. I did see that someone had problems with trying to focus with a standard, Meade barlow and suggested getting a "shorty" one- so that is something to check before you buy a barlow.
If you got the barlow
and the GSO 4mm plossl, that would give you 162x for nights of good seeing (I don't think you would ever get 324x!), 130x, 65x, 52x and 26x
(For reference, 150x - 200x is usually a good magnification for Jupiter and Saturn. the images aren't huge at those powers, but you can see a lot of detail, particularly with practice. It is not often that you can go over 200x because of atmospheric conditions.)
If your budget is tight, why not just get the barlow and see how you go with the supplied eyepieces. Total cost <$250! Bargain!
Down the track you can upgrade- and if you find that you are getting very sharp images at 130x then you might like to go for a higher power eyepiece (like a 4mm). Christmas is coming up soon!
Because the scope is f5, you will notice that stars get distorted towards the edge of the field, especially with wider-field eyepieces (unless you spend more than the scope on an eyepiece!!!)- but you won't notice it too much with plossl eyepieces.
All the best,
Dean
