I love my Baader Hyperion 8-24 zoom. To my eyes its as good as my Baader Hyperion eyepieces for viewing quality and the convenience of the range is so great. Its good to be able to see where my local sky conditions start to fail badly at highest zoom, saves me wasting money on an expensive 6mm eyepiece that might only work for me once or twice a year when conditions are perfect, instead I have my heart set on saving for a high quality 10mm for showing off. My only disappointment is it doesn't work at all on my 100mm desktop dob, which is my quick grab scope for a 5min look at something, but my regular Hyperions work just fine on it.
Another plus I find with the zoom is it makes star hopping easier. to be able to quickly just back out the zoom if i lose where I am. Likewise on a goto mount thats drifting, we've all had the experience of lining up somthing cool like saturn in the eyepiece, then draggin someone over to look only to find its drifted out of viw in the meantime. being able to quickly zoom out so you can see which direction it drifted and re-center makes it much easier to get back to the business of showing off to your mates.
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