A680 Final: SNIa Light Curves
Type Ia supernovae are often used as cosmic rulers because of their characteristic dimming. To learn about them and about aperture photometry, we found the light curves of PSNJ2131+43 and iPTF15dgq. We observed these two supernovae in the B,V, and R filters for a month (November 11, 2015 to December 13, 2015) using the 40” telescope at Maunt Laguna Observatory. To reduce the images we subtracted the overscan and the master bias, and divided by the master flat.
Besides the novae, we selected 10 reference stars of known magnitude in each field of view. We used the USNOB catalog for the B and R band and the NOMAD catalog for the V band.