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2022-01-07:  APP 1.083 has been released !!!

1.083 Windows 64bits download

1.083 MacOS 64bits download

1.083 Linux DEB-64bits download

1.083 Linux RPM 64bits download

  • new Star Reducer Tool
  • 15-30% speed increase in processing
  • introducing Comet registration
  • support for new camera models like Canon EOS R5,R6
  • Greatly improved HSL Selective Color Tool
  • New Batch Tools
  • New File Saver Module with PNG support

Reference and register  


White Dwarf Customer
Joined: 11 months ago
Posts: 15
August 8, 2021 20:17  

What is the correct process if I have a RGB mosaic and want to add Ha to it and make sure they are placed correctly.
Basically: Can I set a reference from the original picture and make APP align the new pictures to it?

Galaxy Admin
Joined: 3 years ago
Posts: 1304
August 8, 2021 20:29  

@syberand Hi Anders. Create the two individual mosaics (so one for RGB and one for Ha). Then load both mosaics as lights and go to tab 4 to register them against one another. Once done, save the registered frames in tab 4 and use those to combine them. If you want to use APP for combining them in Tools -> Combine RGB, you first need to split the RGB mosaic after registering against the Ha mosaic in tab 2. The reason is that in Combine RGB you need to load frames for the individual color channels and you cannot load RGB images. See the workflow that I redirected you originally to in your previous post.

White Dwarf Customer
Joined: 11 months ago
Posts: 15
August 8, 2021 20:33  

thank you

Molecular Cloud Customer
Joined: 2 months ago
Posts: 7
November 24, 2021 19:00  

I am having trouble with OSC color mosaics.   The process I am using with the mosaics as seen on some youtubes seem to be correct.   When I do a single color with a B&W camera the blending is great.  However, with the ZWO 071 camera I am using on a 2-image mosaic the blending is not good.  This could be fixed in Photoshop with the blending and lines seen.   What area do I need to adjust more or less to get the blend more transparent in the mosaic?  I am guessing parameters need adjusting a bit

Quasar Admin
Joined: 5 years ago
Posts: 4172
November 24, 2021 20:22  

Are you using LNC and MBB?