ABSTRACT
Astrophotography has not yet reached the point of saturation in the marketplace and, unlike digital photography in general, each year brings genuine advances in the functionality, performance and value of both equipment and software. In 2015, the PixInsight program proposed a revised form of FITS file that promoted an extended capability (XISF). Individual tools in PixInsight continue to be refined, or dropped in favor of new tools, and just as importantly, enterprising users have found ways of combining these tools using scripts to implement advanced features, some of which will be familiar to Photoshop users. The Instrument Neutral Distributed Interface (INDI) provides a framework for the control of various devices relating to astronomy and astrophotography. INDI is very compact too, with some users running full imaging systems from a Raspberry Pi credit-card sized computer. They run Linux and support programming in several languages.
