How to make a telescope for viewing planets, moon and DSOs using a convex lens of aperture 100 mm and focal length 200 mm and other lenses at home? I wanted to make a telescope with DIY things lying around in home. I read up that the aperture was a very important aspect and thus bought a convex lens with 100mm aperture and 200mm focal length, to use it as an objective lens. Apart from that, I have the following lenses lying around:-


1 convex lens    -   focal length 20 cm             aperture - 10 cm 
2 convex lenses  -   focal length 17 cm             aperture - 5 cm
1 convex lens    -   focal length 2.2 cm            aperture - 2.5 cm
1 concave lens   -   focal length 8.33 cm           aperture - 5.5 cm
1 convex lens    -   focal length 200 cm            aperture - 5.5 cm


I can also buy lenses of range of Power(In Dioptres) from (-14D) - (+14D) of aperture range of 5.5 cm to 7 cm, if suggested.

I made a telescope using lens 1(as objective) and lens 3(as eyepiece) which on calculation, gave a magnification of 9x, but according to stellafane.org and http://skyandtelescope.com the minimum magnification is 14x and that I was 'wasting' the light gathered by the objective lens. This telescope showed me a bright Mars, Jupiter and Saturn, but as dots. Upon seeing the Moon, I could just see it a little bigger than what would be seen with the naked eye.

I would like to know the way to make the telescope, which I would like to use to observe planets and DSOs if possible. I am ready to make separate telescopes also, if suggested.

I would like to know which lenses should I use, or buy and the way to use it. I live in a suburb and it is not very lighted up.

Is there any way I could use the lens 1 in a telescope which I could use to view the planets?

[Edit]

I have accepted @JamesScreech 's answer and am on my way to making it. Apart from that, I would also like to use the big aperture of lens 1, for viewing DSOs, But, it has a very short focal length(just 200mm), and therefore, I am finding it hard to get any eyepiece lens which can "completely accommodate the exit pupil of my scope"(as said on skyandtelescope )



Any way to get such a lens, or make an eyepiece barrell sort of, using a combination of lenses mentioned above or buying. And how to use it?

Thanks.
You would be better off using lens 5 and 3. Though don't expect much, a simple single lens for the objective and for the eyepiece will give a lot of chromatic aberration (false colour). Refracting telescopes usually use at least two lens of different glass types (crown &amp; flint often in a doublet) and eyepieces usually have 4+ lens.

You should be able to see craters on the Moon, the 4 Galilean Satellites of Jupiter, a couple of belts on Jupiter and Saturn's rings. You wont be able to reduce chromatic aberration as simply as that, the type of glass (it's refractive index) and curvature of the lens all need to be matched. You would be much better off buying a ready built objective and eyepieces if you want to make a refractor yourself, though it would probably be cheaper to buy a ready made telescope.