Photos for sure. Anything that's realistic. Not looking at chucking huge money at it to start with but definitely would love to see what's possible
Long post alert!! Short version, expect to pay £500 upwards to get into astrophotography and it gets expensive very quickly!
Two basics you need to know about telescopes. The telescope has two lenses, one at the front and one at the back. The front one is the aperture and it's job is gathering light. The bigger it is, the more stuff you can see. The eyepiece gives the magnification and these are usually interchangeable. But there is a limit into what is useful. If you buy a high magnification eyepiece for a small telescope they there just is not enough light coming in to magnify. Generally telescopes come with two suitable eyepieces to get you started. The bigger the aperture the better the scope, but the price goes up.
Next there is the mount. There are two types. You have an altz-AZ mount which is really intuitive to use. It goes up and down, left and right so feels natural. But the earth is rotating and although you don't really notice how much the sky changes, stick a telescope on a distant star or planet, and you will soon find it drifting out of view. With an altz-AZ mount, you will have to keep moving it both right and up or down to keep it in view. Where as an equatorial mount, you set at an angle for where you are in the world and it turns in an arc equal to the curve of the earth, making it much easier to keep things in view, but it takes a lot of getting used to, to position the telescope to look at the target you want.
Then there is the other aspect of mounts. Motorised or not motorised? With a motor, it is more expensive and you need to think about power (batteries, power tank, extension lead etc). But it allows the scope to automatically track the stars (both kinds of mount). Being computerised, almost all have GoTo database features. Basically once it is set up and aligned, if you want to see the Andromeda galaxy, you tell it on the keypad and it will move for you. It also means that if you are taking images it keeps the object in the field of view for far longer. An altz-AZ mount is fine for things in our solar system (it is what I have) but not very good for deep sky imaging (star clusters, galaxies and nebula). For that you will need a motorised equatorial mount.
Next there is what you take the pictures with. If you have a DSLR camera then you can put this on your scope, essentially using the scope as a lens. With an equatorial mount you can do long exposures. If you do multiple long exposures of the same thing, then you can use software to "stack" them. Basically that processes images and finds the most clear bits from each image, throwing away any bad bits (atmospheric turbulence means you rarely get 100% clear views). The other option is to get a high frame rate camera, which takes videos and then the software will pull the video apart making each frame into it's own image and then stack those. That is how I took my Jupiter pictures. But you will need a laptop or something to drive the camera with.
Or there is a newer game changer, the smart telescope. You don't look through these. You can put them on a table, control them via a smart phone, view images on the phone and take stacked photos from there:
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What I would do is talk to a specialist, and I have found Rothervalley above to be really good. Telescope house is also good. If you look at the link above, down the left you have a "collections" section for things like "General observing £200-£500". I would filter for computerised and these three are good options for lunar and planetary imaging and viewing:
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Another option is to find a local astronomy society, mail them and ask if you can join them. People will let you look through their telescopes and you can get a feel for what you see and see if you think you will like it as a hobby. Some people look at a view of something like Saturn and think wow. They are hooked after that. Others see it as a small circle and are disappointed it is not like the Hubble images and give up.
I'd watched some YouTube stuff about viewing the Sun, making a solar filter & about projecting onto some card. The dangers slightly put me off because there was a short article on it in a book I bought to go with a warning section with the info that came with the scope. One YT vid showed someone starting a fire with his scope lined up to the Sun.
Yes, never line your scope up without the filter on. You will likely damage it and the focussed heat through the eyepiece will be intense.