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Astrospheric Sky ForecastAchromatic Telescopes
Simply put, when multicolor light (like white light) enters a new medium (like glass), the different colors bend at different angles. This spreading out of the colors is referred to as chromatic dispersion and means that the each color will reach focus at a slightly different point. Visibly, when you focus you will see the…
Read MoreApochromatic Telescopes
When multicolor light (like white light) enters a new medium (like glass), the different colors bend at different angles. This spreading out of the colors is referred to as chromatic dispersion and means that the each color will reach focus at a slightly different point making it impossible to focus your eyepiece on all of…
Read MoreTypes of OTAs
Telescopes can generally be divided into three categories based on their optical design: Refractors (dioptrics) – These use only lenses to refract (bend) the light into focus Reflectors (catoptrics) – These use only mirrors to reflect the light into focus Catadioptrics – Use a combination of lenses and mirrors to both refract and reflect the…
Read MoreDobsonian Telescopes (“Dobs”)
Schmidt-Cassegrain Telescopes (SCT)
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