Here is a step by step guide on how to create seamless mosaics using the brilliant SGPro software. From start to finish using the Framing and Mosaic Wizard which is an add on to the main software....... it is worth every penny in my experience.
I hope that you find this useful.
If you have any questions or comments then please post them below and I'll answer them.
Sara Wager is an astrophotographer with published articles and images to her name