
47
Figure 24. M63, the Sunflower galaxy a self-guided image taken using the autoguider on
the Celestron Compustar 14 with a 0.75x focal reducer (f/8). The image data were aquired
on multiple nights from 2011-06-04 to 2011-06-20 using the author’s SBIG STL 11000M
CCD camera with Baader Planetarium LRGB filters. About 20 faint background galaxies
are visible in this image. Exposures: LRGB=152:48:48:52 minutes=5:00hours total
exposure.
Conclusion
Autoguiding has become the premier technique for obtaining high quality astrophotographs. It is
indeed fortunate that the designers of the Compustar had the foresight to include autoguiding
capability into the circuitry of the Compustar computer module, even though the concept was
still in its infancy at the time. Unfortunately, hardware to support the autoguiding feature on the
Compustars was never produced by Celestron and virtually all hardware that has since been
produced by any vendor is not compatible with the Compustar. This has left Compustar owners
under the assumption that if they want to autoguide their astrophotographs, they will have to
upgrade to a newer model of Go-To telescope that has conventional autoguiding capability. This
would be a tragedy considering how exceptional the Compustars are and how much their owners
treasure them. The Compustars are considered the most exclusive telescopes that have ever been
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