OK, there have been quite a number of discussions about what I consider to be an admirable effort at NRTV by Unistellar in the form of the eVscope.
I actually find the Stellina (by Vaonis?) to be more interesting if I were to get one today (and I won't).
Here's a link: https://vaonis.com/telescopes
This thing is apparently using an ED-Doublet with F/5 optics paired with with an IMX178 sensor?
- More stylish IMHO than is the eVscope. Might not be a style people like, but it's got style. . .
- I've no significant concerns about collimation/alignment since it is a refractor.
- Cleaning is not as likely to be an issue since it should be easy to access the objective and the sensor appears to be enclosed.
- Larger sensor for bigger likely FOV but it does not have even nearly as good SNR1 as does the one in the eVscope.
- Weight of both scopes is likely similar.
- The battery is external which means it should be fairly simple to have several around for when I can't do a recharge but want to view on multiple long nights.
- Both are backpack-ready.
- The Stellina is clearly designed to transmit images to your smartphone or tablet (maybe PC?). This means you are not glued to an ersatz (although probably pretty good) eyepiece as with the Unistellar. This would matter a lot to me if I were looking to buy one of the two units today.
- Both are still vaporware. . .
- Stellina costs quite a bit more.
If I had the budgeted money to spend on it and it were not vaporware I would be seriously considering buying the Stellina today. I think it would work very nicely for public outreach. I know that I'd be somewhat bothered by some chromatic aberration but not enough to make it unpleasant for its purpose.
Edited by OleCuss, 08 March 2018 - 10:39 PM.