<p class=”wp-dark-mode-bg-image”>I took a calibrated 2 min sub, debayered and extracted the green channel (OSC camera).
Something worth remembering: if all you are interested in is the change of brightness as time passes, it matters relatively little what filter(s) you are using.
If you extract all four Bayer layers (1xR, 2xG and 1xB) and then add them together you will have more signal and relatively less detector noise in both star and sky. If all channels have equal signal, which they won’t, the SNR will be increased by a factor of sqrt(2) or approximately 1.4 which is well worth having.