National Geographic 76/350 18-117x76

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National Geographic 76/350 18-117x76 Product description

National Geographic 76/350 18-117x76

General properties

Manufacturer	National Geographic
Telescopes series	National Geographic Reflectors
Made in	-
In production since	-
Warranty	5 years
SKU	9015000

Optical properties

Optical design of telescope	Newtonian reflector
Lowest (useful) magnification.	19.85 x
Highest (useful) magnification.	129.01 x
Optical tube size - diameter	95mm
Optical tube length	-
Optical tube weight	-
Aperture.	84.09 mm
Focal length.	385.92 mm
Focal ratio.	$5.09
Eyepiece 1 - Focal Length	20 mm
Eyepiece 1 . magnification	18 x
Eyepiece 2 - Focal Length	6 mm
Eyepiece 2 . magnification	58 x
Eyepiece 3 - Focal Length	-
Eyepiece 3 . magnification	-
Light-gathering power.	130.56 x
Limitting stellar magnitude.	$13.47
Rayleigh Resolution.	2.02 Arc seconds
Dawes Resolution.	1.69 Arc seconds

Reflector properties

Secondary mirror size/diameter.	125.76 mm
Secondary mirror obstruction (by diameter).	125.70 %
Secondary mirror obstruction (by area).	6.25 %

Recording properties

Image capturing	No
Photo adapter	No

Mounting properties

Mount type of build	Dobson
Tripod compliant	No
Type of tripod	-
Tripod material	-

Navigation properties

Software for Stellar Navigation	PC Planetarium
GoTo Telescope Control	No
GoTo Telecope Language	-
Telescope GoTo control interfaces	-
Telescope Alignment method	-
Integrated GPS	No
Tracking	No
Track rate	-
Track mode	Manual
Telescope Guiding	-
Slow motion controller	No
Slew Speed	-
Com. Port	-
Remote Hand Control	No

Physical properties

Power Supply Unit	-
Lens coatings	Multicoated
Type of Focuser	1.25"
Eyepiece barrel size	1.25'' / 31.75 mm
Eyepiece angle	Side mounted
Barlow diverging lens	2x
Level	No
Total gear weight.	1.92 kg
Color	Black

Special features

Recommended for	Beginners
Suitable for observing	Moon, Planets

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National Geographic 76/350 18-117x76

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National Geographic 76/350 18-117x76 Product description

General properties

Optical properties

Reflector properties

Recording properties

Mounting properties

Navigation properties

Physical properties

Special features

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