1
Align your phone
Place your compatible phone in the StarSense dock, open the app and align its camera with the telescope optics. The phone is supplied by you.
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Celestron
Celestron StarSense Explorer LT70 AZ Refractor Telescope
$349.00
$469.00
-26%
A 70 mm refractor with help finding your first targets.
70 mmaperture
70 mm refractor
The Celestron StarSense Explorer LT 70AZ pairs fully coated glass optics with a phone-assisted way to find objects. You look through the eyepiece and move the telescope yourself. It suits a beginner who wants guided finding for visual observing.
28× / 70×supplied eyepiece powers
Two eyepieces, two viewing scales
The 25 mm eyepiece gives 28× magnification; the 10 mm gives 70×. These are the powers before adding the supplied 2× Barlow.
3.35 kgtotal kit mass
Plan how you will carry the kit
This is Celestron’s total telescope-kit weight. It describes the observing equipment, not the packed weight for transport.
Follow the arrows on your phone.
Manufacturer illustration of StarSense guidance. Smartphone not included; app appearance may vary.
2
Choose a target
The app recognises star patterns and offers objects currently visible. Select one to bring up pointing arrows.
3
Move the telescope
Follow the arrows by moving the telescope yourself. When the bullseye turns green, look through the eyepiece.
Assembly and alignment details: LT 70AZ setup guide.
You control the altitude and direction.
The altazimuth mount moves up and down and side to side. Its altitude slow-motion rod helps you make small vertical adjustments as you follow a target.
StarSense supplies guidance. The mount has no motors, so you keep the object in view by adjusting the telescope.
The included 90-degree erect-image diagonal gives an upright view for daytime observing as well as a comfortable eyepiece position.
Check your phone before choosing StarSense.
Phone guidance
A compatible smartphone is required and is not included. Read Celestron’s current smartphone requirements.
Without the app
The included StarPointer red-dot finder lets you aim manually without smartphone guidance.
In the box
LT 70AZ optical tube with altitude slow-motion rod
Altazimuth yoke mount and adjustable tripod
25 mm and 10 mm eyepieces
2× Barlow lens
90-degree erect-image diagonal
StarSense smartphone dock and app code card
StarPointer red-dot finderscope
Eyepiece accessory tray
Lens cap, accessory bag and two tube-mounting screws
Good to know
Darker skies reveal more
City lighting limits faint-object visibility. A darker observing location lets you see more of the objects this telescope can show.
Fit the Barlow in the correct position
Celestron’s FAQ corrects an older setup-guide diagram: put the Barlow between the focuser and the diagonal, with the eyepiece in the diagonal.
Keep the unfiltered telescope away from the Sun
Never look at the Sun through this telescope without suitable dedicated solar filtration. Read Celestron’s solar safety guidance before considering any solar use.
Specifications
Optics
Optical Design
Refractor
Aperture
70mm (2.76")
Focal Length
700mm (27.56")
Focal Ratio (manufacturer specification)
f/10
Focal Length of Eyepiece 1
25mm (0.98")
Magnification of Eyepiece 1
28x
Focal Length of Eyepiece 2
10mm (0.39")
Magnification of Eyepiece 2
70x
Barlow Lens
2x (1.25")
Finderscope
StarPointer™ red dot finderscope
Star Diagonal
Erect image 90° (1.25")
Optical Tube
Aluminium
Highest Useful Magnification (manufacturer rating)
165x
Lowest Useful Magnification (manufacturer rating)
10x
Limiting Stellar Magnitude (manufacturer rating)
11.7
Resolution (Rayleigh) (manufacturer rating)
1.99 arc seconds
Resolution (Dawes) (manufacturer rating)
1.66 arc seconds
Light Gathering Power (Compared to human eye) (manufacturer rating)
100x
Optical Coatings
Fully Coated glass optics
Optical Tube Length
812.8mm (32")
Optical Tube Diameter
76mm (2.99")
Optical Tube Weight
3.6 lbs (1.63 kg)
Dovetail
None
Mount and dimensions
Mount Type
Manual Alt-Azimuth
Height adjustment range (includes mount and tripod)
Aluminium, 1320.8mm (52") max height
Accessory Tray
Yes
Tripod Weight
3.8 lbs (1.72 kg)
Dovetail Compatibility
None
Total Kit Weight
7.4 lbs (3.35 kg)
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A 70 mm refractor with help finding your first targets.
70 mmaperture
70 mm refractor
The Celestron StarSense Explorer LT 70AZ pairs fully coated glass optics with a phone-assisted way to find objects. You look through the eyepiece and move the telescope yourself. It suits a beginner who wants guided finding for visual observing.
28× / 70×supplied eyepiece powers
Two eyepieces, two viewing scales
The 25 mm eyepiece gives 28× magnification; the 10 mm gives 70×. These are the powers before adding the supplied 2× Barlow.
3.35 kgtotal kit mass
Plan how you will carry the kit
This is Celestron’s total telescope-kit weight. It describes the observing equipment, not the packed weight for transport.
Follow the arrows on your phone.
Manufacturer illustration of StarSense guidance. Smartphone not included; app appearance may vary.
1
Align your phone
Place your compatible phone in the StarSense dock, open the app and align its camera with the telescope optics. The phone is supplied by you.
2
Choose a target
The app recognises star patterns and offers objects currently visible. Select one to bring up pointing arrows.
3
Move the telescope
Follow the arrows by moving the telescope yourself. When the bullseye turns green, look through the eyepiece.
Assembly and alignment details: LT 70AZ setup guide.
You control the altitude and direction.
The altazimuth mount moves up and down and side to side. Its altitude slow-motion rod helps you make small vertical adjustments as you follow a target.
StarSense supplies guidance. The mount has no motors, so you keep the object in view by adjusting the telescope.
The included 90-degree erect-image diagonal gives an upright view for daytime observing as well as a comfortable eyepiece position.
Check your phone before choosing StarSense.
Phone guidance
A compatible smartphone is required and is not included. Read Celestron’s current smartphone requirements.
Without the app
The included StarPointer red-dot finder lets you aim manually without smartphone guidance.
In the box
LT 70AZ optical tube with altitude slow-motion rod
Altazimuth yoke mount and adjustable tripod
25 mm and 10 mm eyepieces
2× Barlow lens
90-degree erect-image diagonal
StarSense smartphone dock and app code card
StarPointer red-dot finderscope
Eyepiece accessory tray
Lens cap, accessory bag and two tube-mounting screws
Good to know
Darker skies reveal more
City lighting limits faint-object visibility. A darker observing location lets you see more of the objects this telescope can show.
Fit the Barlow in the correct position
Celestron’s FAQ corrects an older setup-guide diagram: put the Barlow between the focuser and the diagonal, with the eyepiece in the diagonal.
Keep the unfiltered telescope away from the Sun
Never look at the Sun through this telescope without suitable dedicated solar filtration. Read Celestron’s solar safety guidance before considering any solar use.
Specifications
Optics
Optical Design
Refractor
Aperture
70mm (2.76")
Focal Length
700mm (27.56")
Focal Ratio (manufacturer specification)
f/10
Focal Length of Eyepiece 1
25mm (0.98")
Magnification of Eyepiece 1
28x
Focal Length of Eyepiece 2
10mm (0.39")
Magnification of Eyepiece 2
70x
Barlow Lens
2x (1.25")
Finderscope
StarPointer™ red dot finderscope
Star Diagonal
Erect image 90° (1.25")
Optical Tube
Aluminium
Highest Useful Magnification (manufacturer rating)
165x
Lowest Useful Magnification (manufacturer rating)
10x
Limiting Stellar Magnitude (manufacturer rating)
11.7
Resolution (Rayleigh) (manufacturer rating)
1.99 arc seconds
Resolution (Dawes) (manufacturer rating)
1.66 arc seconds
Light Gathering Power (Compared to human eye) (manufacturer rating)
100x
Optical Coatings
Fully Coated glass optics
Optical Tube Length
812.8mm (32")
Optical Tube Diameter
76mm (2.99")
Optical Tube Weight
3.6 lbs (1.63 kg)
Dovetail
None
Mount and dimensions
Mount Type
Manual Alt-Azimuth
Height adjustment range (includes mount and tripod)
Aluminium, 1320.8mm (52") max height
Accessory Tray
Yes
Tripod Weight
3.8 lbs (1.72 kg)
Dovetail Compatibility
None
Total Kit Weight
7.4 lbs (3.35 kg)
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