Here is what you can see right now. The supernova is located in an obscure galaxy called PGC1846725, you cannot find it in SkyAtlas but here it is in Stellarium, magnitude 16.88, you could barely see it with the S50, you would have to expose for 30 minutes or more and have good seeing conditions:

Here the focus is set on a nearby star of magnitude 13.31, you can see now that the galaxy is just a faint fuzzy spot:

and here is what the SeeStar sees right now:

where the very faint galaxy should be, which should be barely visible if at all in the 15 minute shot, there is a star of about the same magnitude as the test star, so let's say magnitude 13.5. This is 22.5x brighter than the entire galaxy! In a few months the supernova will be gone and the S50 image should look again like the Stellarium reference.
If you want to take a picture you have to hurry up because it is fading fast, search for IC3990 in SkyAtlas and you should be able to see it.