Normalization faili...
Clear all

19 June 2021: Our upload server has been migrated successfully to our new office with higher upload and download speeds (nearly 10MByte/sec up/down ) ! We now have 1 general upload user called: upload with password: upload. The users upload1 - upload5 have been disabled.

31 May 2021: APP 1.083-beta2 has been released ! APP 1.083 stable will follow soon afterwards. It includes a completely new Star Reducer Tool, New File Saver Module, Improved Comet registration and much more, check the release notes here!

DOWNLOADS are available HERE!


Normalization failing when trying to stack two integrations  


Main Sequence Star Customer
Joined: 4 years ago
Posts: 34
June 17, 2020 01:35  


Before i sold my Qhy163c, i took a data set of the Iris nebula. I took 2 data sets (hundreds of subs) and stacked them both together in a single integration. I then sold the camera, and have since borrowed a friend's CCD, a Qhy9m. I took a data set with it and made a stack, but when i try to stack the 2 stacks together, it fails at Normalization. 

I've tried all different settings, Regular and Advanced, and even setting the method to None, which i assumed would skip Normalization altogether and let me progress to Integration, but it still fails. 

I've attached links to the 2 stacks below. Assuming i'm not doing something stupid, i hope it helps identify a bug of some sort. 

All the best,


Universe Admin
Joined: 4 years ago
Posts: 3810
June 18, 2020 12:37  

Hi there, yes that is going to be improved, but for now it's not possible to normalize narrowband data with broadband data, one is mono and the other is well.. broadband. 🙂 So you need to process those two independant of each other (you can for instance split the RGB channels and then load those in again and process).