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.
Skeleton text
Skeleton text
Skeleton text
Skeleton text
Skeleton text
Skeleton text
Skeleton text
Celestron
Celestron StarSense Explorer LT127 AZ Telescope
$549.00
$669.00
-18%
A 127 mm reflector with guided manual pointing.
127 mmaperture
127 mm reflector
The Celestron StarSense Explorer LT 127AZ has a 127 mm aperture and 1000 mm focal length. The app helps with finding; your hands control where the telescope points. It suits a beginner who wants guided finding for visual observing.
40× / 100×supplied eyepiece powers
Two eyepieces, two viewing scales
The 25 mm eyepiece gives 40× magnification; the 10 mm gives 100×. These are the powers before adding the supplied 2× Barlow.
5.17 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 127AZ 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 reflecting optics use glass mirrors with aluminium and silicon dioxide coatings.
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 127AZ optical tube with altitude slow-motion rod
Altazimuth yoke mount and adjustable tripod
25 mm and 10 mm eyepieces
2× Barlow lens
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.
Recheck alignment after moving your phone
Celestron recommends aligning the camera and telescope each time the phone is removed and replaced in the dock. This helps keep found targets centred.
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
Newtonian Reflector
Aperture
127mm (5")
Focal Length
1000mm (39.3")
Focal Ratio (manufacturer specification)
f/7.87
Focal Length of Eyepiece 1
25mm (0.98")
Magnification of Eyepiece 1
40x
Focal Length of Eyepiece 2
10mm (0.39")
Magnification of Eyepiece 2
100x
Barlow Lens
2x (1.25")
Finderscope
StarPointerâ„¢ red dot finderscope
Optical Tube
Steel
Highest Useful Magnification (manufacturer rating)
300x
Lowest Useful Magnification (manufacturer rating)
18x
Limiting Stellar Magnitude (manufacturer rating)
13
Resolution (Rayleigh) (manufacturer rating)
1.1 arc seconds
Resolution (Dawes) (manufacturer rating)
.91 arc seconds
Light Gathering Power (Compared to human eye) (manufacturer rating)
329x
Secondary Mirror Obstruction
41mm (1.6")
Secondary Mirror Obstruction by Diameter
32%
Secondary Mirror Obstruction by Area
10%
Optical Coatings
Glass mirrors coated with aluminium and SiOâ‚‚
Optical Tube Length
457.2mm (18")
Optical Tube Diameter
165.1mm (6.5")
Optical Tube Weight
7.6 lbs (3.44 kg)
Dovetail
None
Mount and dimensions
Mount Type
Manual Alt-Azimuth
Height adjustment range (includes mount and tripod)
Aluminium, 1320.8mm (52") max height
Tripod Leg Diameter
31.75mm (1.25") steel
Accessory Tray
Yes
Tripod Weight
3.8 lbs (1.72 kg)
Dovetail Compatibility
None
Total Kit Weight
11.4 lbs (5.17 kg)
Store locator
WANT TO KNOW MORE ABOUT THIS PRODUCT?
Let Gemini, ChatGPT or Claude help you. Click a button and ask away.
A 127 mm reflector with guided manual pointing.
127 mmaperture
127 mm reflector
The Celestron StarSense Explorer LT 127AZ has a 127 mm aperture and 1000 mm focal length. The app helps with finding; your hands control where the telescope points. It suits a beginner who wants guided finding for visual observing.
40× / 100×supplied eyepiece powers
Two eyepieces, two viewing scales
The 25 mm eyepiece gives 40× magnification; the 10 mm gives 100×. These are the powers before adding the supplied 2× Barlow.
5.17 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 127AZ 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 reflecting optics use glass mirrors with aluminium and silicon dioxide coatings.
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 127AZ optical tube with altitude slow-motion rod
Altazimuth yoke mount and adjustable tripod
25 mm and 10 mm eyepieces
2× Barlow lens
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.
Recheck alignment after moving your phone
Celestron recommends aligning the camera and telescope each time the phone is removed and replaced in the dock. This helps keep found targets centred.
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
Newtonian Reflector
Aperture
127mm (5")
Focal Length
1000mm (39.3")
Focal Ratio (manufacturer specification)
f/7.87
Focal Length of Eyepiece 1
25mm (0.98")
Magnification of Eyepiece 1
40x
Focal Length of Eyepiece 2
10mm (0.39")
Magnification of Eyepiece 2
100x
Barlow Lens
2x (1.25")
Finderscope
StarPointerâ„¢ red dot finderscope
Optical Tube
Steel
Highest Useful Magnification (manufacturer rating)
300x
Lowest Useful Magnification (manufacturer rating)
18x
Limiting Stellar Magnitude (manufacturer rating)
13
Resolution (Rayleigh) (manufacturer rating)
1.1 arc seconds
Resolution (Dawes) (manufacturer rating)
.91 arc seconds
Light Gathering Power (Compared to human eye) (manufacturer rating)
329x
Secondary Mirror Obstruction
41mm (1.6")
Secondary Mirror Obstruction by Diameter
32%
Secondary Mirror Obstruction by Area
10%
Optical Coatings
Glass mirrors coated with aluminium and SiOâ‚‚
Optical Tube Length
457.2mm (18")
Optical Tube Diameter
165.1mm (6.5")
Optical Tube Weight
7.6 lbs (3.44 kg)
Dovetail
None
Mount and dimensions
Mount Type
Manual Alt-Azimuth
Height adjustment range (includes mount and tripod)
Aluminium, 1320.8mm (52") max height
Tripod Leg Diameter
31.75mm (1.25") steel
Accessory Tray
Yes
Tripod Weight
3.8 lbs (1.72 kg)
Dovetail Compatibility
None
Total Kit Weight
11.4 lbs (5.17 kg)
Recently viewed products
- Choosing a selection results in a full page refresh.
- Opens in a new window.