What will the telescope show?
lunar crater Petavius seen through
70 mm refractor
can get excellent views of the Moon with this telescope, and
also view a range of other objects in the sky. In common with
other similar instruments, it is best suited to use at fairly low
magnifications, particularly when several people want to look at the
same object through the telescope in succession. This is because the
mounting is not driven so as to track objects through the sky. Higher
magnifications increase the speed with which objects move through the
field of view, and also give a dimmer image, so it is best to start
with low powers.
- The Moon is revealed in
detail, with its craters and mountains easily visible and providing a
wealth of detail for study
major features of the giant planets Jupiter and Saturn can be seen.
Jupiter shows its belts and zones and its flattened disc which is a
result of its rapid rotation. With care, some finer detail may be
visible. Its four major moons, discovered by Galileo, can be seen and
their movements tracked over a period, or even over a matter of an hour
or so in the case of the fastest moving. The rings of Saturn are easily
From even a city
location, the telescope will
reveal star clusters that are invisible to the unaided eye. From a
darker location, a number of nebulae (gas clouds) and the closer
galaxies such as the Andromeda Galaxy are visible, though these require
more care to find than bright objects such as the Moon.
Pleiades star cluster seen
through the telescope