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Thread: Power for getting out and about

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    ManixZero's Avatar
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    Default Power for getting out and about



    Hi all,

    What do you folks at SGL use for POWER when out and about?

    The skies are beginning to darken once again and I have dusted off my telescope, dragged it outside and copped a peak at Saturn as it flew through the gap between a couple of my neighbour's trees! I had about 1/2 an hour, but got my first view of the planet, its rings and some moons.

    (The 'scope is a 6 mth old Nexstar 4SE, powered via a 12v mains power supply)

    As my 12 year old son and I watched with dismay as Saturn disappeared behind the trees my thoughts began to drift,

    {CHAINSAW} was one, but the neighbour would probably have something to say about that.

    {MOVE HOUSE} I'm sure the missus wouldn't want to move JUST to placate my fledgling hobby!

    {MOVE TELESCOPE} Now that is a more practical solution, especially as I have 2 "Dark Sky Discovery Sites (Milky Way class)" within 20 mins drive!

    So finally to my question - The options as I see it are 1, Buy a cable and plug it into my 12v socket in the car. 2, Buy a branded Clestron/Skywatcher Power tank. 3, Buy and unbranded and more powerful Li-Ion power tank such as this XTPower® XT-16000QC2 Power Bank

    Have any of you guys and gals used any of these more modern looking 12v power solutions for their telescopes. If you have what have you used to power your telescopes when out and about?



    Thanks in advance

    MZ
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    Default Re: Power for getting out and about

    This is what a lot of us take out into the field to power our scopes: https://www.amazon.co.uk/PORTABLE-ST...ump+start+pack

    Cheers,
    JT
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    Default Re: Power for getting out and about

    I really rate the Tracer battery. They are not cheap but they are very portable and you don't need to worry about the battery completely dying.

    I'd imagine for light use the 3.5ah may be sufficient but check how much power the mount requires when tracking and GOTO operations and work it out how long the battery on average would last. If you need to run a dew controller etc then more would be required.

    https://www.firstlightoptics.com/bat...tery-pack.html
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    Default Re: Power for getting out and about

    Hi,

    Thanks for the swift response.

    I had also started to look at that sort of device and had found this!

    69900mAh, light weight, plenty of USB Charge ponts and will start my car when I return to it having left the lights on.

    Thanks again

    MZ
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    Default Re: Power for getting out and about

    That only outputs 2 Amps at 12V. Check that is enough to power the mount.
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    Default Re: Power for getting out and about

    Quote Originally Posted by ManixZero View Post
    I had also started to look at that sort of device and had found this!
    Quote Originally Posted by Davesellars View Post
    That only outputs 2 Amps at 12V.
    It has more than enough output current. From the product description:
    Starting current: 300A
    Peak current: 600A
    That unit will do fine.
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    Default Re: Power for getting out and about

    Let us know if it works properly powering your mount and for how long it lasts on a full charge.
    My eyes
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    Default Re: Power for getting out and about

    Quote Originally Posted by KathyNS View Post
    It has more than enough output current. From the product description:

    Starting current: 300A
    Peak current: 600A

    That unit will do fine.
    I believe that's the current from the connection to start a car. You'd be connecting to the 12V (laptop) for usage at constant voltage? This runs at 2 amps as stated.
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    Default Re: Power for getting out and about

    According to my manual the requirements are "Power Supply Requirements - 12 VDC-750 mA (Tip positive)" So hopefully the 2A is more than enough. My 1.5A mains to 12V adapter seems to work OK.

    I will let you all know what I finally buy, whether it works and if it doe for how long....

    Cheers

    MZ

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    Default Re: Power for getting out and about

    I use one of these; I don't know if you have Harbor Freight in the U.K., but I assume you have something similar.
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