Celestron EdgeHD800 ( F=10,2000mm no reducer) , SBIG STL-11000M ( RGB)

R=20min X1, G=10minX1, B=20min X1 < all; 2x2 bining >

15/April in 2021




< This M17 picture, The performance of Celestron Edge , really great, surprising , everyone will understand it.>
< I don't know such great 20cm scope except this HD800 >