I do have the same tube as you minus your spotting scope, i have a low power 5x barrow lens that i use with my 21 mm plossl eyepiece it has wide view. Great for the moon i love it and i use it with a celestron 8-24 m,m zoom lens as well. But i havent yet masted seeing the milky way or star clusters with colors, this is my goal. On the hand i have a very intresting video i captured on my phone when i was looking at Saturn its two objects like a reddish brown in color coming out from the bottom leaving and around 5 hrs later one came back my girlfriend was mad at me for staying up all n ight but i showed it to her and well now shes into it as well now.