All images were remotely taken by Yu-Peng Chan with the iTelescope T31 (PlaneWave 20 inch CDK with FLI ProLine PL11002M ). The Supernova was observed in Astrodon LRB Filters at almost the same time (JD2457888.80994 - 2457888.83704). I measure the brightness of SN 2017eaw in each band approximately according to their spectra. The catalog I used is APASS.
I used the Johnson-V system in L image, Johnson-B in B image and sloan r' in R image. All reference stars and check stars are in good agreement with the catalog. There are another three images taken in R band (Left) and B band (Right) and an LRGB combining (Bottom) done by Yu-Peng.