The DOGULEAN Planetarium 3.4
Requirements and Recommendations
You will need a browser that supports HTML5 and WebGL. That
means your system needs to support OpenGL. A reasonably
recent middle-of-the-line graphics processor should be good enough.
On Linux use the Wayland compositor protocol
(XWayland), not X.org (xOrg). If your system supports
Wayland, it is probably the default and you don't need to
worry about this unless you have had to changed to xOrg for
the benefit of some application that does not support Wayland
(as I have – otherwise I would not know about this).
X.org seems to use lot more graphics memory and you may end up
needing to reboot, or at least log out and back in. On
Fedora, which I run, there is a little settings icon when you
log in. Selecting Gnome or Gnome Classic gives you Wayland.
On Windows or Linux, the browsers Chrome, Firefox, and MS
Edge are all ok. The Planetarium does not support
Internet Explorer or Opera.
On Mac OS X or iOS, versions 12.5.2 or later of
Safari perform well. Some earlier versions 10.x.x and 11.x.x do not work.
Chrome and Firefox should be ok if your devices performs adequately.
A reasonably high-definition monitor should suffice –
higher definition is better.
A reasonable amount of memory. Allow at least 1GB for the Planetarium to use.
If the Planetarium Seems to be Eating Up Too Many of Your Machine's Cycles
Depending on the zoom and time rate you have set, the Planetarium
may update the screen as often as 25 times per second. If that
doesn't leave your machine enough cycles to do other things, then
maybe you shouldn't run the Planetarium on that machine.
If you still want to run the Planetarium on that machine, try
reloading the page. That will reduce zoom to at most 5 and
the time rate to 1, so that the refresh rate will be at most
once per second. After that, if your machine is still too
slow, don't use it to run the Planetarium.
If your machine's performance is ok after reloading, then, in
future, don't zoom in so much or set the clock rate so high.
Your device is probably marginal for using the Planetarium.
A Note on Privacy
The Planetarium is a static web page
with the web server using cookies. It uses the browser's
persistent storage to save your control settings between sessions.
The discussion of touchscreens, above, applies.
- iOS is not supported at present.
I have had reasonably good results with recent Android
tablets. The main problem is that the browsers do not support
number input elements with the little "up" and "down" buttons,
so you have to type in the numbers.
I can actually use the Planetarium on my Android smartphone
(Galaxy S8 with 2GB of memory), but it is not designed for
such a small formats. If you only want an app on your
smartphone to help identify the stars and planets you see in
the night sky, there are many apps that you can use for