Here you attached the camera to the side of the telescope, pointing in the same direction as the telescope. You MUST have an equitorial mount for long exposures, and your polar alignment has to be very good for long exposures. A tracking eyepiece, with illuminated reticule, is useful. This wide-angle picture, broad span of the southern Milky Way, was made using colour film in a conventional camera , which was pointed towards the centre of our Galaxy. The southern Milky Way from Crux to Carina 3.
Exposures vary depending on the object.
Up to a minute, a motor guide is probably sufficient if the equitorial alignment is good. Beyond that, some manual correction will probably be required. This method keeps the eyepiece in place, and the image is projected onto the film. It gives much larger images but is much more difficult. Because the magnification is so much higher, not only is every little wobble magnified, but longer exposures are also needed.