We are excited to announce the launch of our new forums! You can access it forums.aavso.org. For questions, please see our blog post. The forums at aavso.org/forum have become read-only.
Announcement: New Applications
The existing WebObs will soon be replaced by WebObs 2.0! Please use this application to submit future observations: Submit Photometric Observations
Have you read the entire instructions on the zapper web page including system requirements at the bottom of the page?
https://www.aavso.org/zapper
Windows 10 does not come with JAVA and you need to install it to our computer. You can find information for downloading and installing at https://java.com/en/download/. The Browser that comes with windows 10 is also pretty lousy so I would recommend using Firefox (https://www.mozilla.org/en-US/firefox/new/?utm_source=firefox-com&utm_m…; Worked for me, I hope it works for you.
Cheers,
Bob