In principle yes... ...but practically no. Canon EOS are DSLR, i.e. digital SLR cameras. The normal adaptation via the focuser is technically possible, you need a transition sleeve from 1 1/4 "to T-2 and a T-2 ring for Canon. Both are available in specialist shops. However, neither the telescope nor the mount/tripod are suitable for this The telescope produces a more or less strong coma due to the nature of the system, and a corrective lens for this would cost more than the rest of the device. Pictures from an uncorrected Newtonian can cause downright dizzy spells. I can't assess whether you can even get into it with the existing focuser the camera focus. The mount and the tripod are also not stable enough for the required exposure times with such focal lengths in deep-sky photography. The existing equipment also lacks motorized tracking, and the tracking control via guide scope or off-axis We haven't even talked about guiders yet. For the moon and planets, the focal length is lacking. You can't actually do astrophotography on the side, nothing sensible comes out of it. 

Due to the system, a Newton delivers an upside-down and reversed image. For earth observations you need an erecting lens, then the image orientation is correct. The mount is impractical for terrestrial observations because the mount cannot be lowered to zero degrees pole elevation; but even that can be managed to some extent. If you set the counterweight rod horizontally, you only have to swivel the declination so far that the tube is roughly horizontal. But you can't pan sideways, you have to unscrew the mount on the tripod head and turn it sideways. 

Hi, yes, my children got it when they were 7 and 9 years old. However, if necessary, you only need a podium or something similar to stand on at the lowest height. If they are too small like mine. 

moon filter is included in delivery with K&F Concept telescopes. you have to buy a sun filter separately. 

Yes, the width of the equipped mobile phone adapter can be adjusted to fit any type of mobile phone. 

Equipped with eyepieces: H6mm, H20mm The multiples are: 300/6=50 times, 300/20=15 times. If you choose a 3 times Ballov lens, the magnification is 50X3=150 times, 15X3=45 times; plus a 1.5 times orthographic lens, the imaging is a positive image, and the magnifications are: 50X1.5=75 times, 15X1. 5=22.5 times. Namely: minimum magnification: 15 times, maximum magnification: 150 times. 

Of course, the multiple is not the only one, it mainly depends on the comprehensive factors such as aperture and focal length. For example, if the windows of a house are large, the light will be natural and the view will be clear, the same reasoning. 

This telescope is suitable for children over 6 years old, astronomy beginners and adults.