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On 21 Jun 2005 00:45:12 -0700, "atasselli@xxxxxxxxxxx"
<atasselli@xxxxxxxxxxx> wrote:
>How can you possibly prove what you previously posted, eh? They do (or
>at least did) NOT use the same multicoatings (MK67DL's are f...ing
>better) and baffling is quite different. Optical quality in not even
>comparable. Plus, when something really never cools down what do you
>really expect?
>
>Andrea T.
"Never really cools down" is wrong. I've used the 7" in temps down to
-20 and though it does take time (2 hours) it does cool down.
Under more moderate observing conditions (summer) it's ready in
30 minutes or less.
None of what you've said about multicoatings or baffling or optical
differences (which are minor) could possibly account for a major
difference in image contrast. Like most, you are over-emphasizing
the differences for whatever reason. I have't seen a graphic
difference in telescope performance since the bad SCTs of the 1980s.
Since then, "like" scopes have all been similar in performance.
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