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Hi,
I did not see the need for any extra gear whilst in the shop and the sales staff didn't push any.
I haven't needed to collimate my SW dob and I have moved it around a bit since I pulled it out of the box. I will wait until somebody says I need to collimate. The User Manual indicates that collimation should not be too hard.
There must be a good reason why socks/bags are used but I haven't seen discussions.
After a seeing session my dob is about ambient temperature (I haven't gone feeling around for fear of breaking something) so I don't know how hot the mirror gets. Ventilation had not crossed my mind.
Good luck with your search.
Peter
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