Μ33

This image is a combination of data acquired in the past with two different setups:

Sept.2019, Esprit150 and ASI071, 150x120secs , at pixel scale 0.915 arcsec/pixel,

and

Sept2020, Takahashi FSQ106ED4 and ASI2600, 150x300secs at pixel scale 1.456 arcsec/pixel

All individual calibrated subs were normalised, aligned and scaled on the smaller FOV and then processed (all in Pixinsight).

It was an interesting project, which indicates again that it is a good practice to keep older data available