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Loading contentMatches targets to gear — which objects suit binoculars, a small refractor, or a large Dobsonian — using the platform's real equipment catalogue and the target's brightness and size.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.