Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Celestron 130slt power question...

  • Please log in to reply
7 replies to this topic

#1 MikeOcha

MikeOcha

    Lift Off

  • -----
  • topic starter
  • Posts: 5
  • Joined: 18 Apr 2021

Posted 18 April 2021 - 10:04 PM

I recently ordered a 130slt and was researching the power options. Prior to reading I can't use rechargeable AA batteries I ordered some from Amazon. Now I don't want to spend more than the cost of the batteries (my wife is already annoyed I keep adding accessories) can I buy a usb to 12v cable like this https://www.amazon.c...w_1618801127556 and use a usb battery pack to operate the 'scope?

#2 Dynan

Dynan

    Fly Me to the Moon

  • *****
  • Posts: 5,589
  • Joined: 11 Mar 2018
  • Loc: NOLA

Posted 18 April 2021 - 10:12 PM

You need 5 amps to properly run your scope. This only puts out 0.6A.

 

You should get this of you have power available:

 

https://smile.amazon...18801885&sr=8-3

 

Or this if no AC power is available:

 

https://www.amazon.c...18801822&sr=8-3

 

HINT: And maybe break it softly to your better half that this in ONLY the beginning  lol.gif

 

EDIT: Make sure your connection on the scope end of the cord is 5.5mm x 2.1mm Center Positive.

NOT 5.5mm x 2.5mm!


Edited by Dynan, 18 April 2021 - 10:15 PM.

  • RiderRoy and MikeOcha like this

#3 MikeOcha

MikeOcha

    Lift Off

  • -----
  • topic starter
  • Posts: 5
  • Joined: 18 Apr 2021

Posted 18 April 2021 - 10:17 PM

Thank you so much!

As an aside she's cool just wants me to start slow cause I tend to go overboard lol
  • Dynan likes this

#4 MikeOcha

MikeOcha

    Lift Off

  • -----
  • topic starter
  • Posts: 5
  • Joined: 18 Apr 2021

Posted 18 April 2021 - 10:25 PM

https://www.amazon.c...S/dp/B07S89P92C

This one work if I already have a battery?

Edit: not 5A

Edit: went with the battery you recommended thank you!!

Edited by MikeOcha, 18 April 2021 - 10:39 PM.

  • Dynan likes this

#5 Speo

Speo

    Vostok 1

  • -----
  • Posts: 111
  • Joined: 29 May 2019
  • Loc: Toronto, Canada

Posted 19 April 2021 - 09:35 PM

https://www.amazon.c...S/dp/B07S89P92C

This one work if I already have a battery?

Edit: not 5A

Edit: went with the battery you recommended thank you!!

No, it will not work because it is rated for 0.6A and you need more than that.



#6 Speo

Speo

    Vostok 1

  • -----
  • Posts: 111
  • Joined: 29 May 2019
  • Loc: Toronto, Canada

Posted 19 April 2021 - 09:49 PM

The TalentCell battery you bought will give you 12V  and 5Ah.

 

It has inside 6 LiIon cells grouped 3s2p which means 3 series 2 parallel and since each cell is 4V@2.5Ah that means the total available power will be 3 series  = 12V and 2 parallel = 5Ah.

 

If your mount burns 5A constantly, it will drain the whole power in 1 Hr. 

 

5A at 12V is a lot of power, I highly doubt your mount constantly burns that much. 

 

In my opinion that mount should burn less than 2 amps and if that is the case, you have 2-3 hrs of usage, even more if the power consumption is below 2A.


  • Dynan and MikeOcha like this

#7 MikeOcha

MikeOcha

    Lift Off

  • -----
  • topic starter
  • Posts: 5
  • Joined: 18 Apr 2021

Posted 19 April 2021 - 10:16 PM

Thanks Speo. Eventually I'll invest in something with more capacity but a couple hours or a few would be great for now.

Obviously the hobby will be mostly for me, however I am also going to share it with my wife and daughter and I think between the battery, two astro-tech paradigm EP(15mm & 8mm), vibration pads, and the scope I'm set for a bit lol.
  • Dynan likes this

#8 Phil Sherman

Phil Sherman

    Gemini

  • *****
  • Posts: 3,358
  • Joined: 07 Dec 2010
  • Loc: Cleveland, Ohio

Posted 20 April 2021 - 10:05 AM

Your mount will draw power from the battery at three different rates. These are tracking, slewing on one axis, slewing on two axes. Tracking draws the least power, and consumes the bulk of observing time. It should draw less than 0.5A from the battery. Single axis slews almost never happen while goto operations almost always do two axis slews. While these draw the most power, it's most likely a bit less than the 5A AC power supply Celestron recommends.

 

I'd be very surprised if the Talentcell battery you purchased didn't run your mount for at least four hours unless you spend the entire session slewing from target to target.


  • Dynan and MikeOcha like this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics