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. Â Before I release it, I will make sure that everything is working properly and then I will release it.
Hi Mabula,
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Version 1.075 introduces the Mercator Projection as one of the options to project data. This greatly improves big mosaics of (in my case) e.g. the Milky Way. In your release notes you have a picture with some examples of what the Center of Projection (CoP) settings do.
I tried to play around a bit with the settings in my 34 panel mosaic of the Milky Way from Scorpius to Perseus (about 150 degrees field of view), but viewing one individual frame in registered mode took already quite long to display and didn't give much insight in what the final mosaic would look like. I generated a couple of scaled-down test mosaics but that took even longer per setting.
There are 3 settings:
- Rotation
- Move CoP horizontally
- Move CoP vertically
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Playing around with the CoP settings rapidly made things worse than just leaving them at zero, and in combination with the rotation I was really getting confused. Things probably weren't helping that with the specific registration I used at that time was that the reference frame was the one at the extreme end of the long edge of the mosaic.
Could you please explain where the zero points for the projections are located, and in which order the rotation and moves are executed? Is there any coupling with the rotation angle in the Tools tab, I noticed that the angles didn't quite correspond?
This would really help me in getting the most out of this great new feature!
(And feel free to use equations, that only clarifies things more in my case.)
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Thanks in advance
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I'll ask Mabula if he can give some hints. 🙂 I do wonder why that right part is so different, was it a meridian flip there maybe?
I followed galactic coordinates in an equatorial coordinate system, what you see is similar to the zenith hole in alt-az mounts, let's call it the polar hole! 😉
With a field rotator I could have circumvented this, but I don't have one and doing the field rotation by hand was too tedious and not really needed. The fields were chosen to have equal declination in sets of 3, except for near the pole where 10 fields of equal declination were used. Some day (given clear skies and moonless nights and time) I'll add more fields near the pole.
Status of the background removal (slow as expected) is as follows:
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I'm still refining it, so this is a snapshot of work in progress...
Wauw, I think it's the biggest project I've seen to date. Seems like you have a ton of signal.
