UPDATE FROM MABULA
I have had a very rough 2 months unfortunately health wise. I was struck 3x in a row with bacterial infections. The second infection occurred after a routine hospital checkup and I became very sick. I had to rest and take a lot of antibiotics. Once I was recovering and restarting work 1 month ago, I again became sick. The infection was not yet gone, so even more antibiotics and rest was needed. Needless to say, it took a lot of my energy and I needed a lot of rest.
Finally, the infection is really gone and my energy is coming back step-by-step now and I have started work again. I am terribly sorry to have kept you waiting for support. I will address all outstanding questions and e-mails step-by step and will be on the forum daily from today.
APP 2.0.0-beta47 will come soon as well, a lot of work was already completed before I became very ill, so the release is also nearly ready for you. Beta47 will be much faster actually. Many workflows will be more than 2x faster, mosaics can even be 10x faster than before because registration really received a major boost... all compared to beta46. Before I release it, I will make sure that everything is working properly and then I will release it.
I am very happy with the new Multi-NB extraction method, it saves me a lot of time. Question I have is how should I approach drizzling of the Ha data. Should I still stick to Bayer drizzle, or is it different because this is greyscale data? And what about the droplet size in this specific case? Any advice or guidance is appreciated.
Hi Tom @tvanpeer,
Thank you very much for your message. Great to hear that the new Multi-NB method is working nicely for you 🙂 !
Question I have is how should I approach drizzling of the Ha data. Should I still stick to Bayer drizzle, or is it different because this is greyscale data? And what about the droplet size in this specific case? Any advice or guidance is appreciated.
The data, allthough grey is still Color Filter Array = CFA data that needs to be demosaiced/debayerd, so yes, use Bayer Drizzle. Bayer Drizzle settings I recommend are :
- scale 1.0
- droplet 2.0
- drizzle kernel Gauss
If the result looks good, but you want to see if you can get it sharper, try lowering the droplet size to 1.5 for instance. By lowering the droplet size, you might increase sharpness in the result, but it can also become more noisy so you will need to find a balance that suits you most 😉
Let me know if this helps.
Mabula
Thanks Mabula, that is certainly the starting point I was looking for. In my RGB set for the same target I could scale up to 2 with droplet size 1.5. I assume that if droplet size 2.0 works for Ha, I still need to go to scale 2 to get to the same resolution as my RGB set?
Hi Tom @tvanpeer,
yes it would 😉 Since it is Bayer Drizzle and you only work with the CFA pixels, to make your integration, you will need plenty of images though if you increase the scale. I would suggest to set the scale to 2, the same as your RGB and then vary the droplet size so you get the most preferred balance between noise and sharpness in your Ha data.
Mabula
I hope 12 hours of Ha and 20 hours of RGB will be enough. The drizzled RGB image seems to look pretty good already.
