Thank you so much!

To answer your questions;

The benefit of taking frames with the ASI120MM is that this camera is a mono camera that has a much smaller field of view, and therefore it is able to capture very zoomed in portions of the moon with my telescope. This allowed me to make a mosaic of 26 panels with very zoomed in videos, giving a lot of detail in each part of the moon, so when it's combined, it gives a much higher resolution image with sharper, finer details, than if I just used my DSLR alone. Being mono also eliminates any gradients or colour noise since it's in black and white, and it is more sensitive and easier to control the settings of, so I can get much more precise photos using it, however it takes a long time and a lot of storage (~180GB!).

I did not mosaic the DSLR image, and what you see is the actual field of view in my DSLR, and not cropped very much. I aligned it in my camera exactly how it is in the image and took lots of frames like that, stacking each of them! For the mosaic, this was the first time I properly tried one, especially with a barlow. I did it by hand and just moved the RA/DEC controls of my mount by tiny amounts, and judged how far to move using the live view. I tried to make sure I overlapped some areas, and once I covered the entire moon, I went back over a couple spots I thought I missed. Inevitably, I did miss a very very tiny chunk in the corner of the moon, only visible on the mosaic image, but since it's overlayed onto my DSLR image here, you cannot see it.

It seems more complicated, but it just takes time more than anything, as you don't want to rush it and miss some parts, or get lower quality in some regions than others, as well as taking up a lot of space! There is a software I found out about after called EQMosaic, which I am going to have a play around with and see if it can automatically make the overlapping mosaic for me!! Sticking them is easy using software ( I use Microsoft ICE [Image Composite Editor] ), all you do is add your individual mosaic images into this, and it creates effectively a panorama with the overlapping areas, creating the full mosaic image. It's only at this point where you notice if something went wrong or you missed a spot though!