On Fri, 22 Sep 2017 17:56:28 -0700 (PDT), RichA
wrote:

On Wednesday, 20 September 2017 10:12:22 UTC-4, Chris L Peterson wrote:
On Wed, 20 Sep 2017 05:43:17 -0700 (PDT), Borkum Riff
wrote:

Apologies if you already have seen this.
http://unistellaroptics.com/en/product

Has anyone taken part in the demos they've done?

Well, it's interesting, but I don't know that this is the best
approach. They don't say anything about the technology, but my initial
assumption would be that they use a low noise sensor (zero readout
noise, as we see increasingly used in night vision technology) and a
display of some sort in the eyepiece. If you're going to do that, why
have an eyepiece at all. It's an imaging device, and an external
viewer and storage system makes much more sense.

EVFs (electronic viewfinders) are currently superior to LCD and OLED displays of moderate size for resolution, illumination, etc.

I haven't seen any electronic viewfinders that have the resolution of
a good LCD or OLED display. All the ones I've seen (mostly Sony) you
can see the pixels, which you can't on good phone screens and high
resolution monitors.

In any case, there is resolution and there is pixel count. What would
matter on a self contained system is that the sensor be matched to the
display. No reason to have more resolution than the sensor. If they're
using some sort of EMCCD technology as I speculate (which would be an
original addition to commercial amateur imaging), the pixel count will
likely be low- a few hundred by a few hundred. Quite suitable for
typical small displays.