Observed AR12818 with a SW 80ED, ZWO tilter, Quark,
and ASI178MM to see if flats affect the grid pattern.
The first test used the Quark unpowered to be able
to see the photosphere. The second test used the
Quark at power to see the chromosphere.
1st image: Photosphere no flat (grid pattern seen)
2nd image: Photosphere using flat
3rd image: Chromosphere no flat(grid pattern seen)
4th image: Chromosphere using flat
The exact same ImPPG settings were used to severly
stretch the 1st and 2nd images; similarly for the
3rd and 4th images. The photosphere shows the
grid pattern better due to less feature confusion than