Images of objects farther out into the universe, beyond our solar system, are taken with a DSI camera (Deep Sky Imager).
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Astronomers compiled catalogs of nonstellar astronomical objects as they discovered these objects. One of these catalogs, the Messier Catalog, is a compiled list of 110 nebulas, star clusters, and galaxies that are numbered M1 to M110. Some of the common or favorite Messier objects include M31 - Andromeda Galaxy, M42 & M43 - Orion Nebula, and M51 - Whirlpool Galaxy.

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Messier object M103 is an open cluster of stars in the constellation Cassiopeia. This image was taken with a DSI camera operating at f/10 which leaves a narrow field of view of the whole cluster.

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Messier object M15 is a globular cluster of stars in the constellation Pegasus. This image was also taken with a DSI camera operating at f/10 which works fine for this cluster of stars approximately 33,000 light years away.