BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply to thread

Message: <blockquote data-quote="Binastro" data-source="post: 3177973" data-attributes="member: 111403">. This morning there was about 4/8 cloud, but the wind was gusting up to 40 kn, so there was a mixture of sunshine and cloud. Indoors, of course, the wind does not affect the stability of binoculars.Normally, I use a 10×25 binocular for projection for my own use. Usually at about 40 cm projection distance.I wondered if I could increase the projection distance substantially by using a low magnification binocular.I used the 5×25 Foton and was surprised how good it turned out to be. This is a high resolution binocular, at least the one I used.I thought I would be able to double the projection distance to get the same size image, but I found that as I was projecting further into the room I was projecting into a much darker part of the room. Normally, when near the window the projection surface is in a bright part of the room, but here it was in a dark part of the room.I could easily increase the projection distance to 2 m, 2.5 m, and even 3 m and still see a good image, although it was far from me while handholding the 5×25 binocular.. What this does mean is that a whole group of people, say 10 persons, could view the partially eclipsed Crescent Sun at the same time. Whereas at 40 cm perhaps two people could see it.I suppose that a six times binocular might also manage something similar.</blockquote>