Imaging is imaging, usually with a computer to process said images later.
Visual observing is when you look through an eyepiece and get an “instant” view.
As soon as you start to use electronic assistance such as an image intensifier the distinction between these two gets a bit blurred.
The PD camera produces a video output that you can feed directly into a video monitor and get an “instant” or “near instant” view, depending on what integration time you use. No computer is needed.
So here is a slant on that theme. I purchased a 5″ video monitor for the princely sum of £16.99. It runs off 5V, so I also purchased a 12V-5V converter for another couple of pounds. I then coupled it to the PD camera like this:
Here are a couple of snapshots of the “instant” result of the Orion nebula using the window-sill 80mm refractor. The first one is as it comes, the second with a UHC filter.
Not a patch on proper imaging, of course, but interesting!
I could easily see the Flame nebula like this, and I fancied I could (maybe) also see the Horsehead – – -! (From the window-sill, of course!)