We compare the approximate fields of view between Seestar S30 and S50, both in normal mode and in mosaic mode x2.
We have chosen a wide nebula such as the North America nebula.
The whole image corresponds to the S30 in mosaic mode x2, the nebula appears complete, even the Pelican nebula It peeks out a little.
The first red rectangle of 1.44x2.55°, corresponds to the mosaic mode x2 of the Seestar S50, it catches an important part but not the whole nebula.
The second red rectangle of 1.22x2.17°, corresponds approximately to the S30 in normal mode (x1).
The last red rectangle of 0.7x1.2°, corresponds approximately to the S50 in normal mode (x1).
The same with M8 and M20 (Trifid):
Best regards and good skyes