The Celestron PowerSeeker 127EQ Newtonian Telescope is an entry-level newtonian reflector with spherical primary mirror supplied with a manual mount, adjustable tripod, eyepieces, a 5×24 finderscope and 3× Barlow lens. It is designed for straightforward visual astronomy and quick setup without powered electronics.
The 127mm aperture provides the strongest light gathering in this group for visual observations of the Moon, brighter planets, double stars, clusters and brighter deep-sky targets. Celestron specifies a spherical primary mirror and a compact 436mm optical tube with a stated 1000mm effective focal length.
127mm Newtonian reflector with spherical primary mirror Optics
The optical system combines a 127mm aperture with a 1000mm focal length and f/7.87 focal ratio. Celestron specifies a limiting stellar magnitude of 13.0 and light-gathering power 329× compared with the unaided eye.
Manual German equatorial mount
The German equatorial mount has setting circles and manual slow-motion controls. After a basic polar alignment, the observer follows a target by turning the controls. No motor drive, GoTo object finding or automatic tracking is included.
Adjustable steel tripod, setting circles, slow-motion controls and accessory tray. Celestron publishes a complete kit weight of 5.9kg (13lb).
Eyepieces, Finder and 3× Barlow Lens
The supplied viewing accessories are 20mm with built-in erect-image corrector (50×) and 4mm (250×), both 1.25 inch. The 5×24 finderscope helps centre a target before viewing it through the main telescope.
The included 3× Barlow lens triples the magnification produced by a compatible eyepiece. Some theoretical combinations exceed the telescope’s stated useful magnification; the clearest results will usually come from low and moderate powers.
Observing with the PowerSeeker
Begin with the lowest-power eyepiece to locate and centre a target, then increase magnification only when atmospheric steadiness and the target support it. Actual visible detail depends on seeing conditions, light pollution, target altitude, correct focus and, for the Newtonian models, correct collimation.
The stated highest useful magnification is an optical guideline rather than a promise that every observing session will support that power.
Portable Manual Setup
The telescope requires no mains power, batteries or app connection. The published complete kit weight is 5.9kg (13lb). Celestron does not state a separate boxed shipping weight.
What Is Included?
- 127mm f/7.87 Newtonian reflector optical tube
- Manual German equatorial mount and adjustable steel tripod
- Counterweight, counterweight bar and slow-motion control cables
- 20mm erect-image and 4mm 1.25-inch eyepieces
- 5×24 finderscope
- 3× Barlow lens
- Accessory tray
- Celestron Starry Night Basic Edition software and SkyPortal app access
Please note: A smartphone adapter, solar filter, carrying case and additional eyepieces or filters are not stated as included. A motor drive is optional and is not included.
Specifications
Optical Tube
| Optical design | Newtonian reflector with spherical primary mirror |
|---|---|
| Aperture | 127mm (5 inches) |
| Focal length | 1000mm (39 inches) |
| Focal ratio | f/7.87 |
| Optical coatings | Glass mirrors coated with aluminium and SiO₂ |
| Included eyepieces | 20mm with built-in erect-image corrector (50×) and 4mm (250×), both 1.25 inch |
| Barlow lens | 3× Barlow lens |
| Finderscope | 5×24 finderscope |
| Star diagonal | Not applicable |
| Highest useful magnification | 300× |
| Lowest useful magnification | 18× |
| Limiting stellar magnitude | 13.0 |
| Rayleigh resolution | 1.10 arcseconds |
| Dawes resolution | 0.91 arcseconds |
| Light-gathering power | 329× compared with the unaided eye |
| Secondary obstruction | 41mm; 32% by diameter and 10% by area |
| Optical-tube length | 436mm (17.2 inches) |
| Optical-tube diameter | 139.5mm (5.49 inches) |
| Optical-tube weight | 3.23kg (7.1lb) |
| Dovetail | CG-3 dovetail bar |
Mount and Tripod
| Mount type | Manual German equatorial mount |
|---|---|
| Operation | The German equatorial mount has setting circles and manual slow-motion controls. After a basic polar alignment, the observer follows a target by turning the controls. No motor drive, GoTo object finding or automatic tracking is included. |
| Tripod / mount details | Adjustable steel tripod, setting circles, slow-motion controls and accessory tray |
| Mount and tripod weight | 2.68kg (5.9lb), including mount |
| Complete kit weight | 5.9kg (13lb) |
| Software | Celestron Starry Night Basic Edition and SkyPortal app |
Solar Safety
Warning: Never look directly at the Sun through this telescope without a correctly fitted, certified full-aperture solar filter.
Permanent and irreversible eye damage can occur. Never use an eyepiece-type solar filter and never project an image of the Sun through the telescope. Unfiltered sunlight can damage the optics and accessories.
Never leave the telescope unattended, especially when children are present.
Instruction Manuals
Official operating and setup documents are available directly from Celestron.