CG5-GT power requirements
Posted 21 December 2009 - 12:55 PM
Posted 21 December 2009 - 01:24 PM
A set of anti vibration pads under the tripod often helps a bit, as does hanging some extra weight (10-20lbs) from the spreader bar.
If your using the mount in the cold (below freezing) you may also have to keep the hand controller warm otherwise it gets sluggish and hard to use. There are a number of ways to do this, wrapping a chemical hand warmer to the back is easy, a more robust solution is to also add a transparent cover (and still use the hand warmer).
Posted 21 December 2009 - 01:41 PM
Posted 21 December 2009 - 01:56 PM
As I mentioned in my previous posting the mount will draw less than .5amp when tracking. This means with a 7amp/hr battery you could run the mount for 6-7hrs. First you usually don't want to take a battery down below 50% capacity very often. As a battery goes down it will also drop the output voltage a bit. The CG-5 goto electronics start to act "strange" below 10.5 volts. So a 7amp/hr battery is really a 3.5amp/hr unit for the purposes of planning. Just tracking at less than .5amp means that battery will last over 7 hours. You will likely need to slew (gotos) to various objects which will draw a bit more power so I suggested that this would mean the battery would give you between 6 and 7 hours of use.
Posted 21 December 2009 - 02:49 PM
Would a battery of 12V at 7A be sufficent? What regulator (AC to DC) would I need to get to connect to the mains power? I was told that the same regulator could be used to charge the battery, is this correct?
For brief observing sessions with few/short go-tos, yes. For more that that--all evening with fairly frequent slews, 17ah is the minimum. Trot down to Walmart (or Asda in the UK) and get a jump start battery pack.
And, as you've been told, don't try to run it on the charger. Unhappiness will result.
Posted 21 December 2009 - 03:28 PM
I did, however, hard wire a power cable into the unit with an on-off switch. This baby is built GOOD and should last a long time. The battery is one of those sealed units.
Posted 28 December 2009 - 07:45 PM
Posted 28 December 2009 - 08:59 PM
The 2.1mm plug is quite common, and certainly not unique to Celestron.
Posted 29 December 2009 - 02:34 PM
Posted 29 December 2009 - 06:47 PM
Posted 30 December 2009 - 03:32 PM
Posted 10 November 2012 - 12:18 PM