Activity › Forums › Astrosoftware › Astro Pixel Processor › Mosaic Integration Error:java.lang.NullPointerException › Reply To: Mosaic Integration Error:java.lang.NullPointerException
Hi Scott (@srosenfraz),
The first bug that you describe is a new one for me. I know that at 88% the stack should be finished. Then from 88% to 100% APP performs analysis of the stack and saves it to your harddrive.
So it seems that the stack possibly isn’t there, possibly to a problem in registration.
If you could share these panels, so I can duplicate the error over here, I can probably fix this quickly. (You can use our dropbox folder.)
Regarding the mosaic settings:
You can select scales now, use scales of 5-10 for the mosaic integration. Try to have at least 2000 stars detected per frame with the settings in 3)
deselect “same camera and optics”
“dynamic distortion correction “on
and calibrated projective mode and mosaic mode.
The overlap number refers to how many times a single panel in your mosaic would overlap with other frames. For a big mosaic, probably a value of 6-8 would be needed. But it will take some time to calculate. I previously had this fixed at three, so a higher value would be more robust if the mosaic panels overlap wit more than 3v panels each.
Indeed, use the full composition mode to include all pixels of all frames in the integration.
Regarding, the calibrated projective mosaic algorithm, that one still needs a big! upgrade. I hope to do this within the next week or so. Probably, it’s best to try first, for now, parts of the mosaic with the “uncalibrated” projective model. This algorithm already received a big upgrade last week.
(my todo list keeps growing ;-) )

