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Message: <blockquote data-quote="Gijs van Ginkel" data-source="post: 3620778" data-attributes="member: 82596">Steve 04B, post 142,In addition to my post 146: I tested the Kowa telescope in the beginning of 2009 and the image was slightly yellow, not so strong as the image of the first Zeiss Diascope but it was without any doubt the case. The transmission spectrum confirmed that observation. I had borrowed the Kowa telescope from the shop of the Dutch Bird Protection Association, where the telescope at that time was available. (A short time later the shop discontinued selling Kowa telescopes, because the service level was not up to the standards the organisation wanted). Other shop volunteers who worked in the shop as well also observed he slightly yellow bias of the telescope image. In the test I used a clear ranking method, which was made in such a way, that it would rule out preferences of the tester and every reader could check it and perform the same ranking method using his/her own weighing factor. I did that to avoid that personal tester preferences (every tester can have his/her own darlings) received any weight.My conclusion was and is, that at that time the transmission spectrum of the Kowa telescope was fully correct, but that does not tell how it is for newer Kowa telescopes, since I did not test them.Gijs van Ginkel</blockquote>