Hello,
Today during the morning they have lent me a spotting scope of 65mm with an eyepiece at 45º and with a zoom, 15X-45X magbification, and well ... on the one hand I have to say that the eyepiece at 45º I think it does not benefit the search of the plane, it is quite complicated to find him, I think it is easier, much easier with straight eyepieces, such as with the small binocular that I have 8X30 or even with one that left me 12X50 ...,
I will say that the use of the zoom goes well to enlarge the image although it is not easy at all.
That is why I think that an instrument with a straight eyepiece is better, but I wonder if a spotting scope with a straight eyepiece would be better than a straight binocular with a fixed magnification, of course with a magnification of 20X upwards, since when I could "catch" the plane with powers of 20x or 25X the image was much better in details than an image with 8X or 10X ..
Thanks again.