Good question! "Magnification" can be replaced with the term "Field of View" in astrophotography. The scope in this video is the Apertura 60EDR Doublet. It is essentially acting as a camera lens that has a focal length of 360mm. This will give you a decently wide field of view when paired with a dslr. If you want more "Magnification" or a "narrower field of view" then you would attach a telescope with a LONGER focal length like a refactor with a focal length of 750mm. This will nearly halve the field of view bring you closer to your target. Very long focal length scopes like SCTs or Newtonians are great for smaller targets like galaxies and planetary nebula. Refractors and camera lenses with a short focal length offer a wider field of view.. or less magnification, and are great for large targets the Orion Nebula, The Heart and Soul Nebula, or Andromeda Galaxy! So that being said, the only way to shoot an object at different "magnifications" or field of views as you ask in your original question would be to swap the scope with a different focal length scope entirely. Hope this helps!

@@highpointscientific Wow! That was very informative, Can't wait to test this out on my Newtonian!🤭 Thank you! It's hard to find specific answers to your questions in astronomy, You're doing a great job, Keep it up!

You're thinking of a zoom lens. The telescope is essentially a prime lens.

@@highpointscientificdo you have to have a special kind of dslr or a canon eos rebel is good ?

To achieve a flat field with sharp stars to the edges of the frame, nearly all refractors require a field flattener if it is not already built inside - such as a quadruplet or petzval refractor. A field flattener also provides threads to attach your T-ring and camera to. Refractors typically dont come with threads on the back of the focuser itself so there is no way to attach the camera unless you purchased a m48 2" adapter with male threads - in which case you would have a way to attach the camera but even with the smallest cooled sensors you would not be able to achieve a flat field without a flattener. They are highly highly recommended and considered necessary for astrophotography with a cooled camera or DSLR

The DSLR sensor is inset about 44mm into the body of the camera which is why the T-rings are usually 10-11wide - this achieves 55mm of spacing automatically which is exactly what the Apertura Field Flattener requires! Most field flatteners do require 55mm so the DSLR and T-ring will get you there!

@@highpointscientific Thanks, I'll remember that now.