A word in defense of the oft maligned zoom eyepiece. I was looking for one to use with my ST-80, wanting to keep the entire kit as grab'n'go as possible. Tried one of the less expensive brands first, and it wasn't too bad. Then I picked up one of the Vixen LV zooms, having been very satisfied with the performance of their LV line of eyepieces. I must say that I have been very impressed with the performance of this zoom! I compared it with some Elite plossls I use in my binoviewers, barlowing them to achieve the higher magnifications the zoom would provide. Very nice, indeed! To my eye, I can't really discern any difference in on axis sharpness, brightness, or contrast between the Elites and the zoom. Off axis is always a little soft on an f/5, but in the sweet spot this zoom really performs. I've heard that there may be some variations in these units, but the sample I have has very sharply revealed faint stars in the Pleiades, the Double Cluster, and the Trapezium in Orion. the Orion nebula itself looks just as bright and detailed through the zoom as through the plossls, and it performs side-by-side with them on the moon. Ergonomically I'm very satisfied with it. The field is listed as being the same as in the less expensive units, but to my eye it just looks larger at the short end of the zoom's focal length. The eye relief is just about perfect for me, and the zoom action has been very nice, not stiff at all, even when the temperature dips down into the twentys and the teens. All in all, I find it very eay to recommend this zoom to anyone who has been thinking about one, but been put off by some of the reviews they may have read. Out of the branded units it's supposed to be identical with, it is the least expensive option of them all. I'll be keeping mine for certain!
One very happy camper!
One very happy camper!