Quote:
Originally Posted by Rick_SR
Thanks to everyone for the great advice, now that ive decided to go for a dobsonian i would like to know about the collapsible ones ive seen advertised on Ebay, is the only difference between them and other types the fact that it is collapsible or is there other hardware differences cause there seems to be a big price diff between them.
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The only difference between a full tube and a collapsible tube DOB is the tube.
But note there are two types:
Collapsible Type and Truss Type.
Both are heaps easier to transport and man handle than the Solid Tube models.
So the collapsible slides up/down a set of struts to a compact unit (so simpler to put up/take down) while the truss type disassembles into two separate pieces (which breaks the weight into more manageable units for a big scope).
Additional matters to consider:
Collapsible and truss types may require a shroud to stop light (and other objects) entering the tube; and may need a collimation check each time tube is reassembled. But they are easier to work with and store.
Thats how I see it anyway
