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gptkbp:instance_of
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gptkb:astronomy
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gptkbp:accessories
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eyepieces
finderscope
mounting rings
diagonal mirror
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gptkbp:aperture
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4 to 16 inches
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gptkbp:associated_with
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gptkb:Hubble_Space_Telescope
gptkb:NASA
observatories
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gptkbp:benefits
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versatile
easy to transport
long cooldown time
more expensive than other designs
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gptkbp:characteristic
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corrector plate
primary mirror
secondary mirror
catadioptric
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gptkbp:designed_by
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gptkb:Cassegrain
gptkb:Bernhard_Schmidt
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gptkbp:features
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portability
compact design
long focal length
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gptkbp:first_introduced
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1930s
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gptkbp:focal_ratio
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varies
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gptkbp:historical_significance
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first mass-produced telescope of its kind
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https://www.w3.org/2000/01/rdf-schema#label
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Schmidt-Cassegrain telescope
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gptkbp:image_format
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inverted image
real image
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gptkbp:is_popular_among
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amateur astronomers
professional astronomers
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gptkbp:is_popular_for
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deep-sky observation
astrophotography
planetary observation
lunar observation
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gptkbp:is_reflected_in
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varies
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gptkbp:light_gathering_power
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high
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gptkbp:maintenance
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requires cleaning
requires collimation
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gptkbp:mounting_options
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gptkb:altazimuth_mount
equatorial mount
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gptkbp:notable_models
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gptkb:Celestron_Nex_Star
Orion Star Seeker
Meade LX200
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gptkbp:price_range
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mid to high
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gptkbp:resolution
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excellent
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gptkbp:used_for
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gptkb:astronomy
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gptkbp:view
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narrow
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gptkbp:weight
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varies
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gptkbp:bfsParent
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gptkb:Newtonian_telescope
gptkb:Reflecting_telescope
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gptkbp:bfsLayer
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6
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