Celestron Astro Fi 6 Schmidt-Cassegrain


  • 6″ Schmidt Cassegrain with fully coated glass optics.
  • Control your computerised telescope via integrated WiFi using Celestron’s free SkyPortal app
  • Observe in no time with a quick and easy, no-tool setup.
  • Accessories include: two eyepieces (40mm and 13mm), star diagonal, StarPointer finderscope, and a NEW smartphone adaptor.
  • Adjustable height tripod includes an accessory tray.
WifiSkyAlignCPWIStarry Night

Availability: We are currently out of stock of this item, however one of our authorised dealers may have it in stock. Please check our dealer locator to find your nearest stockist.

Category: SKU: 22205 Tag:


Celestron’s Astro Fi 6″/150mm aperture telescope is currently the largest aperture telescope in this very popular series. It is a computerised alt-azimuth Schmidt Cassegrain telescope that is perfect for terrestrial and celestial viewing on the go. The Astro Fi offers dazzling views of craters on the Moon, the rings of Saturn, the Great Red Spot on Jupiter, the Orion Nebula, the Hercules Globular Cluster and so much more at night.

The 6” optical tube, a great multi-use telescope with 1500 mm focal length (f/10). The Celestron C6 is equipped with patented StarBright® XLT coatings which visibly increase contrast on subtle lunar, planetary, and nebula details and higher light transmission for brighter deep space images and shorter exposure times. For this application, observers can use the C6 Celestron optical tube to view the night sky or as a terrestrial spotting scope. The Celestron C6 has the best balance of portability, handling ease, light grasp and price ever offered to the amateur astronomer. It is an advanced level instrument that is as easy to use as any intermediate level, and most entry level, telescopes.

StarBright XLT is Celestron’s revolutionary optical coating system that outperforms any other coating in the commercial telescope market. There are three major components that make up our StarBright XLT high-transmission optical system design: Unique enhanced multi-layer mirror coatings, multi-layer anti-reflective coatings, and high-transmission water white glass. These three components of our StarBright XLT coatings result in one of the finest coatings available.

Take in the sky with the telescope’s computerised alt-azimuth mount. This straightforward design allows the telescope to move in all directions. Setting up the telescope is a breeze and will have you observing in no time. Even on your first time out, you can assemble the telescope, its accessories, and download SkyPortal app in just a few minutes. The adjustable tripod legs allow you to customise the telescope’s height to your liking. The telescope kit is lightweight and portable, perfect for impromptu observing sessions or transporting wherever life’s adventures take you.

You can control your telescope using your smart device. The Astro Fi series emits its own wireless connection to Celestron’s SkyPortal app to provide easy remote observing. Celestron’s SkyPortal app replaces the traditional telescope hand control for a 100% wireless experience. Getting ready to observe is quick and painless thanks to Celestron’s award-winning SkyAlign technology. Centre any three bright objects in the eyepiece, and your telescope calculates its position. You can even generate a Sky Tour of all the best celestial objects to view based on your exact time and location. Scan the sky for an object you would like to view, tap the object in SkyPortal and watch your Astro Fi telescope automatically slews to the object. While observing, SkyPortal provides information on the object; it’s never been more fun to explore the universe!

NOTE: Due to the amount of information SkyPortal has to offer, we recommend downloading the app before going out to observe.

Accessories Included

The Astro Fi 6″ comes with

  • Two eyepieces (25mm and 10 mm) : The two eyepieces offer different magnifications to view your intended object.
  • Star diagonal: The star diagonal provides a right-side-up viewing for a more comfortable viewing angle when looking up at the sky.
  • StarPointer finderscope: The StarPointer finderscope will help you quickly centre an object in your eyepiece for easier observing.
  • Smartphone adaptor: Image celestial or terrestrial objects with this smartphone adaptor! The Astro Fi has an smartphone adaptor to capture great images of the Moon, planets, and terrestrial targets like birds and wildlife. With its light, rigid frame, this accessory allows you to connect any smartphone to any telescope eyepiece with an outside diameter of 45mm or smaller. This smartphone adaptor installs easily over the top of an eyepiece while bungee cords securely hold your phone in position so you can snap images or video. While the vast majority of smartphones can be used with the case on, some very large and/or bulky phone cases (such as folio style cases) may need to be removed for the phone to fit in the adaptor.

Starry Night Software

Download Celestron’s Starry Night Software and learn about the night sky, celestial objects, and how to plan your next observing session. Celestron Starry Night Software is the premier astronomy software package on the market, providing resources and knowledge to view our solar system and beyond.


Optical DesignSchmidt-Cassegrain
Aperture150mm (6″)
Focal Length1500mm (59″)
Focal Ratiof/10
Focal Length of Eyepiece 125mm (0.98″)
Magnification of Eyepiece 138x
Focal Length of Eyepiece 210mm (0.39″)
Magnification of Eyepiece 2115x
Star Diagonal1.25″
Optical TubeAluminium
Highest Useful Magnification354x
Lowest Useful Magnification21x
Limiting Stellar Magnitude13.4
Resolution (Rayleigh).93 arc seconds
Resolution (Dawes)0.77 arc seconds
Light Gathering Power (Compared to human eye)459x
Secondary Mirror Obstruction55.88mm (2.2″)
Secondary Mirror Obstruction by Area14%
Secondary Mirror Obstruction by Diameter37%
Optical CoatingsStarBright XLT
Optical Tube Length406.4mm (16″)
Optical Tube Diameter155mm (6.1″)
Optical Tube Weight4.54kg (10lbs)
DovetailVixen / CG-5 Dovetail bar
Mount TypeComputerised Altitude-Azimuth Single Fork Arm
Instrument load capacity8 lbs (3.6 kg)
Height adjustment range (includes mount and tripod)863.6mm – 1371.6mm (34″ – 54″)
Tripod leg diameter31.75mm (1.25″) Aluminum
Mount Head Weight5 lbs (2.3 kg)
Accessory TrayYes. Includes rubberized smartphone or tablet holder
Tripod Weight5 lbs (2.3 kg)
Slew Speedsmax slew rate is 3°/second
Tracking RatesSidereal, Solar, and Lunar
Tracking ModesAlt-Az, EQ North & EQ South
Dovetail CompatibilityVixen / CG-5 Dovetail
Number of Auxiliary ports2x Aux port for optional accessories
Autoguider portNo
USB PortNo (only with optional Nexstar+ remote)
Power Requirements12V DC, 1A (Tip positive)
Motor DriveDC servo motor
Alignment ProceduresSkyAlign, 3-Star Align, Solar System Align
Periodic Error CorrectionNo
Computerized Hand ControlHand control not included (optional)
NexStar+ DatabaseOptional Nexstar+ hand remote provides over 4,000 objects in the computer’s database
SoftwareCelestron’s Starry Night Special Edition Software, SkyPortal App. Each provide over 100,00 objects in their database
Total Kit Weight14.8 lbs (6.71 kg)
Included ItemsTelescope OTA | Mount | Tripod w/accessory tray | 2x eyepieces | Red dot starpointer | Battery pouch



Astro Fi 6 Manual


Additional information

Weight10 kg


Optical Design


Celestron Technology

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