Great choice the 6" Dob - probably better than the 8" for a beginner and likely to give superior views. As for accessories - forget the moon filter and barlow. The moon is best viewed in twilight conditions, most observers avoid looking at the full moon. If you do you can use an off aperture mask that will make you scope perform even better. What I recommend is a collimation tool of some sort, a laser type is real easy to use, but there are other types that cost less money. Save any money you have to buy a really good eyepiece such as a 13mm nagler or similar.
|