Here are 2 profiles of Albireo B-one of the profiles is instrument response curve corrected. I used a 10" f/10 Meade SCT with a f/6.3 reducer, an Alpy 600 with 23 um slit, and a Atik Infinity monochrome camera. I used Demetra to acquire the image and RSpec to do the data reduction. With the profile that is with the IR curve applied the spectra Pickles spectral library reference profile that is over laid shows the star to be a B9Ve star.
Edited by brownrb1, 22 September 2020 - 03:10 AM.