So, those images look very nice. One thing that stands out to me is the lack of CA on saturated stars. I have to begin to wonder how they intend to stay at the 500 dollar price point, and what compromises they are making to do so. Not trying to be negative,(I have one on order). Just curious. What do the beta testers have to say about the mount part of the setup. Tracking, gotos, etc…. Just curious.
JMD
Are we looking at the same images? There is plenty of CA (blue stars) on those images. The narrowband filters of course is better, because the duo narrowband limits the blue and around the blue spectrum mostly.
I wish ZWO would make these posts on their developer blog or similar, instead of going to facebook, which already compresses the images more than needs to.
Here, I downloaded what they posted.
Without duo narrowband (plenty of chromatic aberrations, as it would with a doublet)

With duo narrowband filter.

The narrowband will reduce or eliminate the CA as it should.
Regardless, this is really not bad at all for that tiny thing. But again, the image is a fairly bright nebula, probably will do well with the mostly bright DSOs, not sure how well it handle fainter ones.
With broadband imaging though (galaxies, clusters, reflection nebulae) the CA will be very obvious, but at this price point it is expected.
Edited by unimatrix0, 05 July 2023 - 01:16 PM.