Used - PowerSeeker 127EQ Telescope
Item #: U21049 / 21049-CGLPlease note: This is a gently used item. For complete product details, specs, and extras, please visit the original product page.
Gently Used, Fully Trusted
At Celestron, we believe the cosmos should be within everyone’s reach. That’s why our gently used items have been rigorously inspected and are in full working order—even if they show a few signs of past adventures. When you purchase this product, you’ll also enjoy the same comprehensive warranty as our new items, giving you confidence and peace of mind as explore the night sky.
Clear skies and happy stargazing!
Overview
Please note: This is a gently used item. For complete product details, specs, and extras, please visit the original product page.
Gently Used, Fully Trusted
At Celestron, we believe the cosmos should be within everyone’s reach. That’s why our gently used items have been rigorously inspected and are in full working order—even if they show a few signs of past adventures. When you purchase this product, you’ll also enjoy the same comprehensive warranty as our new items, giving you confidence and peace of mind as explore the night sky.
Clear skies and happy stargazing!
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Description
Specifications
| Optical Tube Info: | |
|---|---|
| Optical Design: | Newtonian Reflector |
| Aperture: | 127mm (5") |
| Focal Length: | 1000mm (39") |
| Focal Ratio: | f/7.87 |
| Focal Length of Eyepiece 1: | 20mm (0.79") |
| Magnification of Eyepiece 1: | 50x |
| Focal Length of Eyepiece 2: | 4mm (0.16") |
| Magnification of Eyepiece 2: | 250x |
| Barlow Lens: | 3x |
| Finderscope: | 5x24 |
| Highest Useful Magnification: | 300x |
| Lowest Useful Magnification: | 18x |
| Limiting Stellar Magnitude: | 13 |
| Resolution (Rayleigh): | 1.1 arc seconds |
| Resolution (Dawes): | 0.91 arc seconds |
| Light Gathering Power (Compared to human eye): | 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 aluminum and SiO₂ |
| Optical Tube Length: | 436mm (17.2") |
| Optical Tube Diameter: | 139.5mm (5.49") |
| Optical Tube Weight: | 7.1 lbs (3.23 kg) |
| Dovetail: | CG-3 Dovetail bar |
| Mount Info: | |
| Mount Type: | Manual German Equatorial |
| Height adjustment range (includes mount and tripod): | 812.8mm - 1295.4mm (32" - 51") |
| Tripod Leg Diameter: | 31.75mm (1.25") steel |
| Accessory Tray: | Yes |
| Tripod Weight: | 5.9 lbs (2.68 kg) includes weight of mount |
| Slew Speeds: | Manual |
| Dovetail Compatibility: | CG-3 saddle plate |
| Software: | Celestron Starry Night Basic Edition Software and SkyPortal App |
| Total Kit Weight: | 13 lbs (5.9 kg) |
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FAQ
Where are the 3 screws for adjusting the secondary mirror?
At first glance, it may look like you are missing the 3 screws that adjust your secondary mirror, however we are using Allen headed threaded inserts (screws) and they are recessed in the thread holes on the outside of the secondary mirror (FIG 1). Use a 1/16” Allen head wrench (as shown in FIG 2) to make the adjustments.
What is this screw on the top of one of my accessory rings?
Some PowerSeeker EQ models have two accessory rings that are needed to attach the optical tube to the EQ mount. On the top of one of the rings is a threaded stud with a thumbwheel. This is designed to allow the attachment of a camera with a ¼-20 threaded insert. The ¼-20 thread pitch is standard in the photographic world. This is very beneficial when used in conjunction with the optional AstroMaster/PowerSeeker Motor Drive (part #93514) for sky tracking. This ¼-20 mount is not used to attach your telescope to the EQ mount and is not needed for using your telescope in the traditional manner.
See illustrations below for clarification. 
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