and Chasing Jupiter from my Yard. 
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Show Scope Eyepieces
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NOTE: A f/9.2 telescope is considered a "slow" focal ratio.
This optical design is well-suited for detailed views of the Moon, *very limited* planetary
surfaces like Jupiter and Saturn. My favorite Magnifications are 35x and 105x as the K20mm
lens works well with my phone camera.
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Telescope #2 "Bob"
Model Number: National Geographic NG114mm / NT114CF / 80-30114S
Optical Design Newton Reflector
Aperture: 114mm
Focal Length: 500mm
Focal Ratio: f/4.4 (fast)
Max Useful Magnification: 228x
Max Barlow Magnification: 375x
Max nonBarlow Magnification:125x
Purpose: Deep Sky / Star gazer / Planet viewer / great Moon view(photo)
Mount Type: BRESSER 3point Pan Handle Mount
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NOTE: This telescope lacks focal length to match it's Aperture Useful Magnification, so not really good for
planets. But a short focal length makes a faster Focal Ratio.
With it's wider Aperture and fast Focal Ration F-number, it is my best Deep Sky I own.
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Telescope #3 "Steve"
Model Number: National Geographic 80-50070
Optical Design: Achromatic Refractor
Aperture: 70mm
Focal Length: 400mm
Focal Ratio: f/5.7 ("mid")
Max Useful Magnification: 140x
Purpose: Great Moon viewer / some nebulae capable / planet capable
Eyepiece Diameter: 0.965"/24.5mm and 1.25"/31.75mm
Mount Type: AZ Pan Handle Mount (upgraded RCA)
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NOTE: A f/5.7 telescope is a versatile "mid-speed" focal ratio.
This optical design is ideal for wide-field visual observing of *non-detailed* views of nebulae and deep-sky.
Because of small aperture, great detailed views of the moon.
I have only used this telescope to look at Jupiter and it's moons, Venus, and the Moon.
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Telescope #4 "Jim"
Optical Design: Refractor
Aperture: 40mm (actual)
Focal Length: 155mm
Focal Ratio: f/4 ("fast")
Purpose: Moon viewer
Eyepiece 19mm
Magnification 8x
Mount Type: AZ Pan Handle Mount
Note: Uses coated BAK4 Prism