I am currently using a 15x to 45x zoom spotting scope on a very wide camera tripod. It works nicely .
I have a Newtonian reflecting telescope (I am trying to sell)with an 8 inch mirror, an 8" f4.5.
This means it is very short, giveing a wide field of view. It is a "Dobsonian",
meaning it has a simple wood base. .... neck, back. knee pain forces sale.
I enjoy looking at the Moon, Planets, Galaxies and Double stars. Most
star systems have more than one sun, and many of these are visable from
Earth. The planets around other stars are too faint for us to see from Earth, but astronomers can detect them because
the star "wobbles" due to the
gravitational effects on the star by the planets.
Dobsonian improvements :)
After years of frustration I have figured out how to Smoothly move my Dob !!
For smooth altitude adjustments, I drilled two holes throuth the box holding the
scope just above the bottom of the box and ran a 2 foot long dowell through the holes. I tied a string
onto the bottom of the scope and wound the string onto the dowell. by turning the dowell rod, I slowly crank the base
down and raise the elevation on the scope...
If I have to decrease elevation, I have an arm with a pulley above the base of the
scope. i thread the string from the base of the scope through the pulley on the arm to the dowell and by turning the dowell
smothly lower the scopes elevation....
For left or right adjustments, I drove lots of small nails in a 18" circle down
into the scope base. I then screwed a large screw one inch above the base horizontally into the box holding
the scope( that rotates on the base).... By useing a 12" flat screwdriver i can smoothly pry the scope box left or right.
"Is the speed of light a constant?"
Interestingly enough, every time it was measured over the next few hundred years, it seemed to be a little slower than
before. This could be explained away, as the first measurements were unbelievably rough compared to the technical accuracy
later. It was not that simple, though. When the same person did the same test using the same equipment at a later
period in time, the speed was slower. Not much, but slower.
I enjoy looking at GOD's creation. It shows an awesome evidence of his majesty, wisdom and power. The expance of
forever, uniquely showing himself to all mankind.
The speed of light has been measured 163 times by 16 different
methods over the past 300 years. However, Australian physicist Barry Setterfield and mathematician Trevor Norman, reexamining
the known experimental measurements to date, have suggested a highly controversial discovery: the speed of light appears to
have been slowing down!
1657: Roemer 307,600. +/- 5400 km/sec 1875: Harvard 299,921.
+/- 13 km/sec 1983: NBS (laser method): 299,792.4358 +/- 0.0003 km/sec
The speed of light is now measured as 299,792.4358 kilometers per second.6
(This is approximately 186,000 miles/second; or one foot per nanosecond.)
The Canadian mathematician, Alan Montgomery, has reported a computer analysis supporting
the Setterfield/Norman results. His model indicates that the decay of velocity of light closely follows a cosecant-squared
curve, and has been asymptotic since 1958. If he is correct, the speed of light was 10-30% faster in the time of Christ; twice
as fast in the days of Solomon; four times as fast in the days of Abraham, and perhaps more than 10 million times faster prior
to 3000 B.C.
Helen d setterfield
The following question was: "Is the speed of light constant?" Interestingly enough, every time it was measured over
the next few hundred years, it seemed to be a little slower than before. This could be explained away, as the first measurements
were unbelievably rough compared to the technical accuracy later. It was not that simple, though. When the same
person did the same test using the same equipment at a later period in time, the speed was slower. Not much, but slower.