Valery
28.05.2002, 09:21
Вот что говорят о ТАЛ-100
"Just a note on TAL-100 chromic aberration. The clouds finally lifted
after a number of days overcast and I had another chance to continue
testing my semi new TAL-100. The last time I reported on the TAL-100
I reported that I saw a hint of chromic aberration when viewing
Jupiter. Then I was viewing between numerous clouds.
Last night the sky was clear, but the moonlight destroyed viewing
anything very dim. It was solar system viewing time. The moon through
the TAL was spectacular, as good as ever viewed with my larger
scopes. The smaller aperture of the 100 was even useful decreasing
the brightness (didn't need neutral density filters at high power).
The more I observed the moon, the more impressed I became with the
TAL. The TAL surprised me that there wasn't anything in the image
that suggested chromic aberration. I thought, "this is a refractor,
isn't it?" I decided to do a worst case test, Venus!
Venus was wonderful, white, just bright white. Where were the
classical refractor purple rings, not even a tint of chromic
aberration. That got me to wonder what I was seeing before on
Jupiter. I put the scope back on Jupiter and discovered what I was
interpreting as chromic aberration was actual Jupiter colors
disturbed by thermal turbulence, not chromic aberration. I was so
convinced that I would see aberration my mind invented it.
My TAL-100 is amazing. No fancy lens cell, no push-pull collimation
screws. Just little metal tabs separating the lens elements. Did I
just happen to get a "perfect" TAL-100? Maybe, but maybe not. My TAL-
100 earned its Ray's Bracket last night.
Regards,
Richard"
Вот так. Не больше не меньше. Мне лично больше всего понравилась такая сентенция:
" That got me to wonder what I was seeing before on
Jupiter. I put the scope back on Jupiter and discovered what I was
interpreting as chromic aberration was actual Jupiter colors
disturbed by thermal turbulence, not chromic aberration. I was so
convinced that I would see aberration my mind invented it."
Дааааа уж.... Ну что сказать?
Val.
"Just a note on TAL-100 chromic aberration. The clouds finally lifted
after a number of days overcast and I had another chance to continue
testing my semi new TAL-100. The last time I reported on the TAL-100
I reported that I saw a hint of chromic aberration when viewing
Jupiter. Then I was viewing between numerous clouds.
Last night the sky was clear, but the moonlight destroyed viewing
anything very dim. It was solar system viewing time. The moon through
the TAL was spectacular, as good as ever viewed with my larger
scopes. The smaller aperture of the 100 was even useful decreasing
the brightness (didn't need neutral density filters at high power).
The more I observed the moon, the more impressed I became with the
TAL. The TAL surprised me that there wasn't anything in the image
that suggested chromic aberration. I thought, "this is a refractor,
isn't it?" I decided to do a worst case test, Venus!
Venus was wonderful, white, just bright white. Where were the
classical refractor purple rings, not even a tint of chromic
aberration. That got me to wonder what I was seeing before on
Jupiter. I put the scope back on Jupiter and discovered what I was
interpreting as chromic aberration was actual Jupiter colors
disturbed by thermal turbulence, not chromic aberration. I was so
convinced that I would see aberration my mind invented it.
My TAL-100 is amazing. No fancy lens cell, no push-pull collimation
screws. Just little metal tabs separating the lens elements. Did I
just happen to get a "perfect" TAL-100? Maybe, but maybe not. My TAL-
100 earned its Ray's Bracket last night.
Regards,
Richard"
Вот так. Не больше не меньше. Мне лично больше всего понравилась такая сентенция:
" That got me to wonder what I was seeing before on
Jupiter. I put the scope back on Jupiter and discovered what I was
interpreting as chromic aberration was actual Jupiter colors
disturbed by thermal turbulence, not chromic aberration. I was so
convinced that I would see aberration my mind invented it."
Дааааа уж.... Ну что сказать?
Val.