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

DLSR battery substitue for darksite ops

accessories astrophotography DIY dslr
  • Please log in to reply
8 replies to this topic

#1 ssagerian

ssagerian

    Vostok 1

  • *****
  • topic starter
  • Posts: 102
  • Joined: 30 Nov 2013

Posted 15 March 2017 - 09:41 PM

I started out using my modded T3i with batteries, lots of batteries. Then I purchased a AC to DC converter that fits in the battery well and works continuously provided I had access to 110 AC. Then I hacked my AC to DC converter by adding a voltage regulator. Now I can operate off my 12V battery at a dark site. Here is the completed system:

 

GEDC2651.JPG

 

Here is a close up of the old AC to DC converter in a new slightly larger housing, along with the 12VDC to 7.5 VDC adjustable voltage converter.

 

GEDC2650.JPG



#2 Jim Waters

Jim Waters

    Viking 1

  • *****
  • Posts: 513
  • Joined: 21 Oct 2007
  • Loc: Phoenix, AZ USA

Posted 15 March 2017 - 10:58 PM

I did the same thing long ago.  Now I use this and a 12VDC Deep Cycle Battery that also powers my mount, laptop, radio ...etc.

 

http://www.telescope...?keyword=21126d



#3 drew2578

drew2578

    Vostok 1

  • *****
  • Posts: 139
  • Joined: 21 Dec 2012
  • Loc: The Garden Isle

Posted 15 March 2017 - 11:30 PM

Just put a simple dc to dc adapter together a buck convertor.  Tested with both Canon and Nikon camera and it works great!  Best part is that it took only about ten minutes to make wink.gif. Just input up to 30ish volts on one side and out comes 7.5 although i find Nikon like 7.7v better.

 

Would be cooler if it would step down from 120v AC as well as DC though :)  I only run 12V now though.

 

My two cents.

Attached Thumbnails

  • 20170315_182139_1489638176059_1.JPG
  • 20170315_182036_1489638176365_2.JPG

Edited by drew2578, 15 March 2017 - 11:34 PM.


#4 fishonkevin

fishonkevin

    Surveyor 1

  • *****
  • Posts: 1847
  • Joined: 29 Apr 2007
  • Loc: Michigan

Posted 16 March 2017 - 05:55 AM

I did the same thing long ago.  Now I use this and a 12VDC Deep Cycle Battery that also powers my mount, laptop, radio ...etc.

 

http://www.telescope...?keyword=21126d

Jim, what size fuse do you use in the cigarette lighter adapter?



#5 ssagerian

ssagerian

    Vostok 1

  • *****
  • topic starter
  • Posts: 102
  • Joined: 30 Nov 2013

Posted 16 March 2017 - 07:16 AM

The switch allows me to select the AC to DC 7.5 output when I am running off AC in the back yard or to select the voltage regulator output 7.5 VDC when I am running off battery, when I go to a dark site.



#6 kd4pbs

kd4pbs

    Apollo

  • *****
  • Posts: 1139
  • Joined: 13 Feb 2013

Posted 16 March 2017 - 09:02 AM

I did a similar thing; an 8 volt regulator mounted inside the fork arm and a power receptacle mounted on one of the fork arm covers for the LX200.  Powered directly from the same 12V coming in for the scope, and of course fused.  It's very convenient to simply plug the camera into the fork arm for power :)



#7 geothomas

geothomas

    Mariner 2

  • -----
  • Posts: 210
  • Joined: 15 Jun 2016
  • Loc: Huntsville, Alabama

Posted 16 March 2017 - 09:39 AM

I was thinking about doing this, but I am in a very humid environment and was worried about moisture entering my D810 camera if the battery door is left open all night. Any thoughts/experiences?



#8 ssagerian

ssagerian

    Vostok 1

  • *****
  • topic starter
  • Posts: 102
  • Joined: 30 Nov 2013

Posted 16 March 2017 - 09:56 AM

The AC/DC adapter has a battery adapter that is inserted into the battery 'well' and the door is closed, the cable is clamped with a rubber gasket that keeps moisture out. SO you should be ok.



#9 Phil Sherman

Phil Sherman

    Vanguard

  • -----
  • Posts: 2413
  • Joined: 07 Dec 2010
  • Loc: Cleveland, Ohio

Posted 18 March 2017 - 03:34 AM

My field use power system consists of a box that uses DC-DC regulators to provide 5V, 7.5V, and 13V. The 13V supply is for my mount that doesn't like to run on less than 12V. PowerPole connectors connect the box to either a 17AH gel cell or a 100AH deep cycle battery. When AC is available, a salvaged computer AC supply provides 12V and the 17AH battery is put in the circuit as a UPS backup for the occasional kicked AC power cord. The box has worked very well for over 5 years.




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.






Also tagged with one or more of these keywords: accessories, astrophotography, DIY, dslr



Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics