|
Its really only an issue if you intend to use a DSLR on your scope and even then only if the focuser can't wind inwards enough to reach focus with the camera attached. But DSLR is not the only or even good way to take photos through a telescope. Take a look at ZWO cameras, this is the sort of camera often used and there are tons of options and no limit to cost. Essentially though they are all the same : just an imaging sensor inside a housing shaped to just slot into a telescope focuser just like any eyepiece and typically they connect via USB to let you record using a computer /laptop.
If the focus of a telescope is far out from the focuser you can buy spacer tubes to let you get a camera out to the focus point.
There is also afocal projection where you leave the eyepiece in the scope and use your smartphone or camera held to the eyepiece to take a photo. Some eyepieces have threading to allow a camera adapter to mount securely to the eyepiece for this purpose. There are many options and ways if photography is the direction you want to take.
Also be aware the cheaper telescopes, especially refractors, may not have focusers that are strong enough to hold a dslr without bending which ruins the focus possible.
As Raymo mentioned, any reputable retailer should be able to advise you if you provide them with your needs. If astrophotography is your #1 requirement, if visual (just looking at stuff) is most important, if you only want to look at the planets, if you only want to look at galaxies, if you are studying any particular astro-phenomena for work/course, list it down. Newbies often want to know "what will do everything?" the answer is everything and nothing will. Refractors, reflectors, cats all have their strengths and weaknesses so realistically knowing what you want to look at should be a strong influence on your purchase. People will tell you you cant use XYZ scope if you live in a town or city, thats not true. You can't get the BEST performance out of any scope if used anywhere near civilization and EVERY scope will improve when you take it out to a dark sky site .
|