Q1: The Televue 8mm-24mm zoom stops at 8mm, 12mm, 16mm, and 24mm. Does this stop at the same places, or does it stop at every degree (as indicated by the hash marks between the numbers)? Thank you. Jason

A: This eyepiece can be used at any focal length between 8 and 24. It will turn to any degree between 8 and 24.

Q2: What is the difference in quality between using this zoom eyepiece as compared to using individual eyepieces of the same focal length ? Should one buy a couple of individual eyepieces as opposed to buying this? Thanks.

A: the advantage to this eyepiece is that it gives you a range of eyepieces all in one. Buying them individually will allow you to get the precise levels of magnification that you want where with this your option is just form 8mm through 24mm. So if the ranges of eyepieces that you were looking for were in the range of this eyepiece then the zoom is not a bad choice at all.

Q3: Is this eyepiece parfocal, i.e. can you zoom without re-focusing, or do you constantly have to adjust the focus as you zoom?

A: It is not a parfocal eyepiece you will need to adjust the focus as you change your magnification.

Q4: I have a Meade telescope (the ext 90?) and though some images seem magnified a bit, it is no better than a pair of binoculars - is it the eye-piece?

A: The Meade ETX-90 telescope ships with a 26mm eyepiece that will produce about 48X magnification with the telescope's 1,250mm focal length. That's not much more than a good binocular can produce. An eyepiece of a shorter focal length will increase the magnification of the scope. For example a Meade 4000-Series 6.4mm Super Plossl ocular will produce about 195X, which is about the maximum you can expect to use consistently with your scope. Here's the URL for the eyepiece; just paste it into your browser's address window: http://telescopes.com/products/meade-super-plossl-6-4mm-eyepiece-1-25-inch-6356.html.