Hi Andres!
First of all, i want to thank you for this impressive code! It's very useful and neat script to have in the arsenal.
Now, when I'm building my own astro website, this tool became very handy and I was able to solve and Annotate images with 17mm FL.
Until i came to this specific widefield image and found that something wrong with the script.
On the first image i draw just the Grid and NGC Objects and as you can see they've been created just on the left side, which is up to 24 hour RA. No matter what i do, it won't Annotate whole image.
Second problem, is if you look at 36° DEC mark, you will notice that object names piling up and got messy. Although I used small image scale and small fonts to separate the Names, they still got written above each other and became unreadable.
Check for example NGC 7446 and 7449, they almost fused on the same spot, i think there should be option to separate the object names so they don't get written on each other. Even manually moving them with mouse if possible.
Also i think it would be good to have the ability to filter magnitude or size of the objects, like with stars. Meaning, on such wide image there are so many small objects or dim objects, that are not visible and it might have no reason to mark them at all. Then you might draw just large or bright objects circles and keep annotation image clear.
And now to the another big problem on the same image. When i enabled PGC catalog, i got this piled up cone with all objects as you can see on the second image. I can send you that clean image to test over if you want.
