I went to the help and found detailed instructions..
http://meta.wikimedia.org/wiki/Help:Ima ... aded_files
The key is to upload to the commons as mentioned.
To upload a file, in general, go to Commons, log in there, and upload the file using the upload link commons:Special:Upload. In the menu on the left under "toolbox" you will have a link named "Upload file". If you want to upload the file to one of the other wikis, you can follow the same steps as at Commons, but be sure to refer to the local guidelines.
I do remember I had to get permission to access this in the past. It is not on by default to avoid abuse. When you have permission, when logged into the Wiki, the toolbox will have the Upload file link.
@ Jack, do you want me to add the magnetic Chrony to this page? You can add the info if you like. I can provide links to sample photos for the page.
http://www.spudfiles.com/spud_wiki/inde ... hronograph
Feel free to use images from this page:
https://inteltrailblazerschallenge.wiki ... rim+method I posted all images on that page so copyright won't be a problem. You have permission to use them in the Wiki.