i've been using a 10mm lens which gets me 65x magnification but jupiter and saturn just show up as little dots.
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And that is how they would be expected to appear at 65x.
Before I recommend a different focal length eyepiece, it is important to know what the aperture (diameter) of the main mirror is, as that has a bearing on how much magnification it can handle.
Atmospheric "seeing" also affects how much magnification can be applied before turbulence gets magnified as well.
ADDED: If properly collimated, and if seeing conditions allow, a 130mm should be able to handle 200x or so. Most nights you will probably use a maximum of 150x. In case you didn't already know, magnification is determined by dividing the focal length of the telescope by the focal length of the eyepiece which is why 650mm/10mm=65x.
So you need to either buy a shorter focal length eyepiece or possibly a quality (not the cheap ones) Barlow lens in around the $75 price range.
Before I recommend a different focal length eyepiece, it is important to know what the aperture (diameter) of the main mirror is, as that has a bearing on how much magnification it can handle.
Atmospheric "seeing" also affects how much magnification can be applied before turbulence gets magnified as well.
ADDED: If properly collimated, and if seeing conditions allow, a 130mm should be able to handle 200x or so. Most nights you will probably use a maximum of 150x. In case you didn't already know, magnification is determined by dividing the focal length of the telescope by the focal length of the eyepiece which is why 650mm/10mm=65x.
So you need to either buy a shorter focal length eyepiece or possibly a quality (not the cheap ones) Barlow lens in around the $75 price range.
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Saturn's rings should be easily visible at 65x. If you aren't seeing them, you aren't seeing Saturn.
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I have seen Saturn's rings easily with 32x magnification on a 3 inch (75mm) telescope, so 65x on a 130mm telescope is more than enough. So if you are not seeing Saturn's rings then your telescope is not pointed at Saturn. Getting the telescope pointed at the correct object is always harder than beginners realize; until they try it. It is all too easy to get pointed at a bright star near the planet in the sky and then believe you are looking at the planet but the telescope just isn't good enough. Your telescope is good enough and it will be extremely obvious when you get Saturn in the field of view.
Right now, here in Austin Texas, Saturn hasn't yet risen in the East, and Jupiter is high in the southwestern sky. Jupiter is the very bright blue-white star about 1/8 of the sky west of (right of) the Moon, and the bright yellowish star high in the eastern sky is Mars. 65x is not enough magnification for Mars, which is quite small. Saturn will rise in an hour or two and be high enough to view well a couple hours after that. And it is not nearly as bright as either Mars or Jupiter, so you can't just look at the brightest star in that part of the sky, need to know the constellations well enough to tell which star doesn't belong. That will be Saturn.
Right now, here in Austin Texas, Saturn hasn't yet risen in the East, and Jupiter is high in the southwestern sky. Jupiter is the very bright blue-white star about 1/8 of the sky west of (right of) the Moon, and the bright yellowish star high in the eastern sky is Mars. 65x is not enough magnification for Mars, which is quite small. Saturn will rise in an hour or two and be high enough to view well a couple hours after that. And it is not nearly as bright as either Mars or Jupiter, so you can't just look at the brightest star in that part of the sky, need to know the constellations well enough to tell which star doesn't belong. That will be Saturn.
keywords: 39,lens,with,which,see,and,650,if,should,of,saturn,want,to,reflecting,its,use,bought,mm,rings,telescope,focal,ve,recently,length,I've recently bought a reflecting telescope with a focal length of 650mm, which lens should I use if I want to see saturn and its rings?