Hello Emmy!
Originally posted by emmy
For mainly all you Brits.
I'm a british astronomer! I have a magnificent 8 inch Skywatcher telescope set up permenantely in my observatory here in UK.
Originally posted by emmy
My dad and I are getting a telescope, going 50/50, but what's a good one under £100? I've been looking on Amazon and found a really good one for
£102 (with P&P), apparantly the scoop on this one says you can see Mars clealy, Jupiter with its rings etc...
Now I don't want to be a killjoy but great care must be taken when buying a telescope. The sad fact is that there is no decent cheap telescope on
the Market. A 60mm refractor or 4inch reflector is large enough to show you the craters on the Moon, the polar ice caps of Mars, at least three belts
on Jupiter nad the rings of Saturn, but you must bare inb mind that they will be nothing like the images in magazines.
Mars in particular is very small for most of the time and you need a telescope of at least 6'' to do it justice. It might be wiser to invest in a
pair of binoculars first. These will also show you the moons of Jupiter and craters of the Moon, many coloured double stars and so on. If you decide
you really want to make a hobby out of astronomy then you can perhaps go on to buy something larger.
If you're keen to get a telescope then Meade, Skywatcher, Orion I think are the most reliable telescopes so far.
When you're buying a telescope you must also consider the mount. A telescope with a flimsy mount is next to useless- one slight breeze and it will
quiver and the image in the eyepiece will dabce about alarmingly! There are basically two types of mount:
(i). Azimuth which is your basic tripod. Remember that the stars in the sky are constantly moving as the Earth rotates and any image which is
magnified by 100x or more will make this drift very apparent. Unfortunately that's the down side of this type of mount, although admitedly this
type of mount is easy to set.
(ii) Equatorial mount. This is the best type of mount- it is aligned with the Earth's pole so that you only have to worry about one direction of
rotation. Indeed many such mounts can have motors attatched to them so thaqt they can track an object in the sky- essentially the motors drive the
telescope so it moves at the same rate as the Earth's rotation.
Finally, never buy a telescope which is promoted by it's magnification alone! Many small telescopes are sold with adverts promising 500x
magnification, while you could get this type of power the image will be so blurred and faint you won't be able to see anything! A good rule of thumb
is that the highest power a telescope will bear is twice the aperture size(mm). Thus a 50mm telescope will give 100x, 300mm gives 600x and so on.
Originally posted by emmy
So, just wondered who has one and good plazes other than amazon.com,
ta!
Emmy
A good place to go is
Stargazers Lounge
You will find pleanty of people there to help and much advice on the subject of telescope buying.
You will find astronomy the most rewarding of hobbies. Let me know how you get on.
Paul.