กล้องดูดาวสะท้อน GSO 6" Classic Dobsonian Telescope พร้อม Crayford Focuser GS580

Very happy with it. This or a similar 8 inch will show you the most for the least cost. Chose a 6 inch for less weight and less need for collimation.

ข้อดี: Good value (for Thailand...).
Very sharp.
You may find it possible to carry it in one piece, less likely with an 8 inch.
Probably won't need collimating as often as an 8 inch would.
Great focuser.

ข้อเสีย: Heavy in absolute terms (about 17.1kg), but not particularly heavy for a 6 inch dob.
May require collimation occasionally.
The 9mm eyepiece is somewhat uncomfortable, but is usable and is no worse than any similar focal length eyepiece that might come with other telescopes.
An 8 inch would have a 2 inch focuser which would allow for lower magnifications with an appropriate eyepiece. Only an issue if you plan on looking at feint things (galaxies, nebula etc.)