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I hit 20 years on the Mark-Cass list earlier this month!
I found a used one many years ago; here's me using it in 2010:
On Fri, Jul 31, 2020 at 5:19 PM Harley Davidson <astrocnc@...
Beautiful instrument Jim! I agree, just something about viewing the
universe with your eyes.
On 7/31/2020 6:46 PM, thefamily90
Well, I have imaged the Moon
and Planets with mine (earlier version) and could not be
happier with its performance. I may be part of the end of
the era of visual observations and am happy to say I have
spent hours and hours at the eyepiece of telescopes. I can
certainly image more detail on Jupiter with my 10??? than I
can see but the longer I look the more I can see. And, in
my opinion, very few images match the aesthetic beauty of
Jupiter through the eyepiece of my telescope!
WOW! Simply beautiful!
More rare than hens teeth...
Today I finished the last of the 10"
F14.5 Maks, which will go to whoever is on our list.
This is the last of my hand figured Maks that I plan
to make of this size and focal length in production.
It used to be that there was much more visual
astronomy than there is today, probably because
imaging was hard in the film days and for the first
couple of years when we had small chips to do
electronic imaging. Nowadays it is impossible to get
visual views that remotely resemble what you can do
with a few thousand bucks worth of electronic
That said, here is my last
production Mak, aimed at a far distant telephone
pole insulator which has a glint of sunshine that
shows up as an artificial star. With a 5mm SPL
ocular (737x) I see a tight high contrast Airy disc
at focus. For those who don't know what that is - an
Airy disc is the smallest resolvable spot from a
distant point source that can be seen in any
telescope. For a 10" it's approximately 4.5 arc
seconds, and is surrounded by a few faint
diffraction rings. With a scope like this I once saw
the Sirius Pup in the Florida Keys when the
separation was a mere 4 arc seconds.
Business end of the mighty Mak
Let there be light and minimal
The little Stowaway couldn't help
hitching a ride on it's big sister