Capturing and Processing Mosaics

Part I
The Plan

Part II

Part III
Sub-Frame Processing

Part IV

Part V
Assembling the Mosaic in Photoshop


Mosaics can be a fun and worthwhile way to create large sweeping vistas of astronomical targets.  You can create a wide field view with a high-resolution system or a super-wide field view with a lower resolution system.  This can give you better detail and the ability to create very large prints of your astrophotography.

Unfortunately mosaics add another level of complexity to an already difficult process.   There are other articles on creating mosaics, most notably those done by Rob Gendler.  Rob's articles inspired me to try out mosaics, but there was still a lot to learn.  In my most recent mosaic attempts, I have been achieving great results in part due to a new method of seamlessly blending the mosaic frames together.

In this article I describe, with as much detail as I can manage, the steps I go through to create a mosaic.  Specifically, I describe what I did to create my recent 9-panel mosaic of the Virgo Galaxy Cluster.  This particular image is only gray-scale and is a good example of creating a mosaic.  As we all know, adding color only complicates the process even more.  However, following the procedure I outline here, you can create either gray-scale or color mosaics.

I hope this article is of use to you in creating mosaics.
-Matt Thomas

Next: Part I - The Plan

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