As a beginner, seeing this information really helps. Thanks for including it all and you’ve made a fantastic picture.
I have a couple questions if you don’t mind: what does NB and BB mean and regarding the number of calibration frames, do those numbers represent your choice at imaging time or what remained after excluding any that you or the software didn’t like? Thanks!
NB = narrowband (the Ha and Oiii filters) and BB = broadband (the RGB filters). Because I’ve got a lot of light pollution I use a lower gain for the broadband filters since they let a lot more light through.
I only count exposures post-rejection. The morning after imaging I’ll look through the pics and delete them if it was cloudy, out of focus, not centered, or if the stars trailed. The rest go on to get calibrated and stacked for the final image.
As a beginner, seeing this information really helps. Thanks for including it all and you’ve made a fantastic picture.
I have a couple questions if you don’t mind: what does NB and BB mean and regarding the number of calibration frames, do those numbers represent your choice at imaging time or what remained after excluding any that you or the software didn’t like? Thanks!
NB = narrowband (the Ha and Oiii filters) and BB = broadband (the RGB filters). Because I’ve got a lot of light pollution I use a lower gain for the broadband filters since they let a lot more light through.
I only count exposures post-rejection. The morning after imaging I’ll look through the pics and delete them if it was cloudy, out of focus, not centered, or if the stars trailed. The rest go on to get calibrated and stacked for the final image.
Thanks!