Cheddar Valley Gazette Friday 23rd February 1973
Digging
begins for telescope
Mendip
Astronomers meeting on Thursday last was mainly taken up discussing
just what help members could be to Dr. Armitage with the construction
of the Charterhouse observatory, and decided that the best thing
would be to offer to do some digging for the initial stages of the
building.
Dr.
Armitage agreed that this would be a good idea, and members will meet
on Sunday next at the site to start clearing it. It is hoped to film
some of the various stages of the work.
The
actual telescope is now completed and is being stored in Bridgwater
awaiting the building of its housing. In fact it was shown on
television last week when Patrick Moore was in Bridgwater. It is an f
7 Newtonian reflector mounted on a German equatorial mounting. The
tube is eleven feet long and holds an eighteen inch diameter minor.
This mirror has been figured by Henry Wildey who is one of, if not
the best astronomical mirror makers alive today, so it will be a
superb mirror. It has three finders and a rotatable eyepiece holder
which will make it very easy to use. It is also fitted with setting
circles for locating celestial objects and is fully electrically
driven.
Although
it was very cold on Thursday evening, some of the more intrepid
members of the group ventured outside to have a look at the moon and
the planet Saturn through Mr. E. Beech's six inch telescope. Despite
a slight haze, Saturn was seen quite well, with its rings wide open
and Titan, the largest of its moons alongside it.
The
moon, our moon that is, was too near full to show much detail, it is
best seen when only partly illuminated when there are plenty of
shadows bringing out the detail.
However,
the rays from the ,craters Tycho, Copernicus and a few smaller ones
stood out very well. These rays which fan out from the craters and
cover vast areas of the Moon are thought to be material which has
been ejected out of the craters during their formation.
There
was a huge halo around the moon. This was caused by ice crystals in
our upper atmosphere refracting the moonlight. It is under these
conditions that we sometimes get the phenomenon known as "mock
moons," a halo around the moon and four images of the moon
above. below and to either side of the moon itself.
The
next meeting will be on Thursday. March 1st , once again
at Derek Randal's house 'Tregantle' in Milton Lane, Wells. New
members are still coming along from time to time and anyone
interested in astronomy is welcome.