View Single Post
  #3  
Old 25-06-2017, 05:05 PM
phomer (Paul)
Registered User

phomer is offline
 
Join Date: Nov 2009
Location: Maribyrnong
Posts: 160
Darren,

First of all, what you are describing is not a dew fan, it is a fan to assist with bring the mirror to the same temperature as the surrounding air.

Secondly, Jarcar are full of 12 volt batteries so I assume what you are looking for is a combined charger and battery and something that is not too large.

A camping store would probably be your best bet.

However, you could just buy a 12v battery and suitable charger separately and just replace the battery after a few years. I assume you only run the fan for a short while so it would not need much capacity, maybe 10 amp hour or so.

Regards

Paul




Quote:
Originally Posted by Lomu View Post
Howdy all!

My third post in three odd years. I apologise for that. Quality over quantity etc.

I dragged the scope out the other night and now I'm wondering why I didn't do it sooner. Got a slight query if anyone has encountered this situation.

I've got a Bintel 8" Dob. At the back is a 12v fan for cooling the primary; a battery pack is supplied with the scope, which takes 8 AA batteries. I'm thinking it's slightly unweieldy- is there some sort of portable power bank that outputs 12V to power the fan? I'm sure there is, and I had a look at the Jaycar website but oddly enough, I can't find anything that's suitable.

Looking on the web I can find plenty of sites that have a DIY approach but I'd rather just grab something off-the-shelf if possible. Has anybody else encountered this slightly annoying situation?

Thanks all,
Darren
Reply With Quote