Thanks. What surprised me is how easy it was to do (or maybe the 3 years of struggle are paying off at last).
Data capture steps:
Took around 2 hours and produced ~27.5Gb of data. Altair 183C is 5440 x 3648, each frame 38Mb.
APP load data steps:
load 120s lights and select multi-session, assign these lights to session_1
load 120s darks, assign these darks to session_1
load 60s lights and assign to session_2
load 60s darks and assign to session_2
repeat for 30s, 10s, 4s lights and session_3, session_4, session_5
load flats and assign to all sessions
load bias and assign to all sessions
APP processing steps:
Then APP 'Tools' for post-processing.
The PC was at it for a while on a 16Gb, quad core Xeon workstation. All the settings in processing can be set at once, then choosing integrate
will carry out all the processing steps in the list above.
Features in APP that have helped me improve my results are:
- Remove light pollution, calibrate background, calibrate star colour
- Predefined stretches to select from
The calibrate star colour has resulted in images which have retained star colours. The best example I have is on my Astrobin - the recent M27 was captured back at the end of August 2019. Look at the difference in the 2 images - same data, different post processing.
The APP site has some good video tutorials including downloadable data. I have spent a good few hours grinding through these. The idea of the sessions and assigning frames in APP extends also to narrow band where there is the additional capability to assign an RGB colour to a set of data.
As always, any new piece of software needs time spent in order to get the best out of it.