|
One advantage of the 6" is that the youngest will be ble to see thru the eyepiece without a step, an 8" can be a little high for some kids if you are looking up.
Often the worst ep you get is the smaller mm length, yet this is the one for planets so if you get the 6" you'll be able to get a good high powered eyepiece.
Problem for you is which size will suit, 9mm, 8mm etc, if ou can go along o the asaw (albury wodonga astro society) to test different focal lengths.
If bintel are out astronomyalive might have a 6" or 8" dobsonian
Lastly the kids will find it easier to move the 6" by themselves, the 8" is heftier..just some points to consider
|