One of the benefits of doing astronomy in late December at this latitude (48 N) is that one can begin observing at 5:00 pm, wrap things up by 9:00 pm and still have an early bedtime. the following observations were made on December 20 and 23, 2023.
Obviously, the best match was for the star Alfirk. I cannot explain the deviations for the other profiles. All profiles were created with the same master flat frame; all used the same instrument response, and all were taken within an hour on the same evening except 10 Lacerta three days earlier.
In addition to trying to improve my workflow, I want to take a look at rectified profiles for these observations (by dividing out the continuum) so I can more readily compare my results with those in Walker’s Atlas. I will save that for another post.