Power requirements

These are the measured currents that the equipment draws, mount without equipment mounted (bare mount). The 12V DC coverter used was a 3,7A AC/DC converter that originates from a Wii gaming console.

I measured the current required for the divers equipment I’m using:


Equipment or combination

CurrentRemarks
Only stand-by LED’s from dew control and power distribution box0.03A
Switch on the EQ80.47A
Siderial rate on0.50A
Slew at rate 9 in RA2.05A
Slew at rate 9 in Declination2.00 A
Combined RA and Decl slew at rate 93.15A
Slew at rate 7 in RA1.7A
Slew at rate 7 in Declination1.7A
Slew at rate 3 in RA0.55A
Slew at rate 3 in Declination0.55A
EQ8 at siderial rate and dewcollar full charge of the C111.9A
Only Dewcollar C111.42A
Dew collar APO120mm only1.10A
Small dew collar for guiding scope 50mm0.52A
EQ8 siderial rate + dew collar APO2.04A
idem + slew in declination rate 93.44A

above + slew in RA rate 9 (as well as decl)4.6AConverter overloaded,halted
ASI184MM Pro cooler at 94%1.9A
above + EQ8 Siderial2.24A
above + slew in RA Decl rate 93.9AConverter overloaded,halted

An XLR based power station

Everybody that ever worked with 12V cigare lighter connections knows that they need something else! You need a solid connection that is not sensitive to movements, with no risk of loosing your power during an imaging session.

The other criteria would be that the system is weather proof (no sparks from dewing or icing up during the night, and that it can stand the required Ampéres of current.

In our astronomy club www.vvscapella.be  one of our members Jean Lammertyn designed a system based on the XLR standard for audio conenctions.

 

All details can be found here