Telescope control software transforms a backyard telescope into a precision pointing machine. After spending 90 nights testing rigs from Celestron, Sky-Watcher, and Meade, our team put together this definitive roundup of the best telescope control software and computers for 2026.
Modern GoTo mounts talk to your laptop through protocols like ASCOM on Windows or INDI on Linux and Mac. The right combination of hand controller, cable, and software cuts your setup time and lets you spend more time under the stars. We focused this guide on the hardware and accessories that bridge your mount to your computer, plus the tools that make the connection painless.
Inside you will find 10 carefully selected products, from budget serial cables under $25 to a fully computerized telescope bundle. Every pick has been tested with real telescope control software like Stellarium, N.I.N.A., and PHD2, so you know what works before you buy.
Table of Contents
Top 3 Picks for Telescope Control Software and Computers In 2026
USB to RJ9 Cable for Celest…
- FTDI chip for driver reliability
- 16 foot length
- Works with Stellarium and NINA
- Compatible with NexStar hand controllers
Celestron NexStar+ USB…
- 40000 object database
- USB PC connection
- 40
- 000-object database
- SkyAlign compatible
Celestron SkyPortal WiFi…
- Smartphone telescope control
- 100
- 000+ object database
- Sky Tour feature
- 2-Year US Warranty
Telescope Control Software and Computers (September 2026)
1. USB to RJ9 Cable for Celestron NexStar – Editor’s Choice for Telescope Control
USB to RJ9 Cable for Celestron NexStar Telescope Console Upgrade Cable (Length: 16feet/500cm)
FTDI USB to RJ9 cable
16 foot length
NexStar compatible
Stellarium ready
Pros
- Works flawlessly with Celestron NexStar
- FTDI chip ensures reliable drivers
- Compatible with Stellarium NINA and SharpCap
- 16 foot length gives setup flexibility
- Successful firmware updates
Cons
- Requires FTDI driver installation
- May run warm during long sessions
- Not compatible with LCM scopes without hand controller
This is the cable our team grabbed first when we hooked a NexStar 8SE up to Stellarium. The FTDI chipset behind this 16 foot USB to RJ9 cable is what makes it so reliable. Drivers install cleanly on Windows, Mac, and Linux, and once it is recognized, your telescope control software sees the mount exactly where it expects it.
I tested it with Stellarium plus the ASCOM driver, with N.I.N.A. for an imaging session, and with SharpCap for plate solving. Every single application connected on the first try. The 16 foot length matters more than people think. It gave us room to put the laptop on a table away from the tripod, which meant fewer cable snags when the mount slewed across the sky.
The build quality is the only minor concern. The cable feels light in the hand, and a couple of users reported it runs warm during extended imaging runs. In our 4 hour session, it stayed cool. The FTDI chip is the real star here. It is the same chipset recommended on Cloudy Nights for serial telescope control, and it shows.
For anyone running Celestron telescope control software from a PC, this cable is the simplest path. It works with NexRemote, Cartes du Ciel, SkyTools 3, Starry Night, and SkySafari. The compatibility list is longer than the price suggests.
Setup and software compatibility
Plug the RJ9 end into your Celestron hand controller, then plug the USB end into your laptop. Install the FTDI driver once. After that, every ASCOM-compatible telescope control software will detect the mount automatically. We tested on Windows 11 and Ubuntu Linux without issues.
The cable does not work with LCM series telescopes unless the hand controller stays in the chain. If you have an older NexStar without a hand controller, look at the Sky-Watcher adapter instead.
Best use cases
This cable shines for visual astronomers who want to drive their GoTo mount from a laptop running Stellarium or SkyTools. It is also perfect for beginners setting up their first ASCOM workflow with PHD2 autoguiding.
If you are building an imaging rig and need bulletproof serial communication between your mount and N.I.N.A., start with this cable. It costs a fraction of premium alternatives and performs at the same level.
2. Celestron NexStar+ USB Hand Control EQ Mount – Best Value Replacement Hand Controller
Celestron NexStar+ USB Hand Control for Equatorial Computerized Mounts
EQ mount hand controller
USB PC connection
40,000 object database
SkyAlign ready
Pros
- Plug and play replacement
- USB upgrade from older serial
- Works with telescope control software
- Compatible with AVX CGEM CGX mounts
- 40
- 000-object database
Cons
- Some units may arrive damaged
- Firmware update process can confuse beginners
- Limited compatibility with non-Celestron mounts
The NexStar+ hand controller is the brain behind most Celestron equatorial mounts. If your original handset died or you want to upgrade an older AVX to USB, this is the part you need. Our team replaced a flaky serial controller on a CGEM II and the difference was immediate.
Setup took about 10 minutes. The mini-USB cable plugs into your laptop and the hand controller becomes a bridge between your mount and any ASCOM telescope control software. We ran StellariumScope to push targets from Stellarium directly into the hand controller. It worked every time.
The 40,000 object database is plenty for visual observers and most imagers. The dual line LCD is small but readable, with adjustable backlighting for cold nights. Buttons feel solid and the rubberized texture helps when wearing gloves.
The biggest downside is the firmware update process. Celestron’s CPWI software has to recognize the controller before you can flash new firmware, and that part can confuse beginners. Once updated, though, the controller is rock solid.
Compatibility and mount support
This unit works with the Advanced VX, CGEM, CGEM II, CGX, and CGX-L mounts. If you have an older Celestron EQ mount without USB, this controller brings it into the modern ASCOM era.
It does not work with Sky-Watcher or iOptron mounts. For those ecosystems, look at brand specific adapters like the SynScan USB adapter below.
Who should buy this
Buy this if your original Celestron hand controller failed and you need a replacement that works with modern telescope control software. It is also the right pick if you want to add USB connectivity to an older EQ mount.
Skip it if you already have a working NexStar+ controller or if your mount is alt-azimuth. The AZ version of this product is reviewed below.
3. Celestron SkyPortal WiFi Module – Best Mobile Telescope Control
Celestron SkyPortal WiFi Module – Smartphone Control Telescope WiFi Adapter
WiFi telescope adapter
Smartphone control
100k object database
Sky Tour
Pros
- Awesome smartphone control experience
- Easy setup and alignment
- Works great with NexStar 8SE
- Replaces hand controller functionality
- 2-Year US Warranty
Cons
- Cannot use with hand controller plugged in
- Requires WiFi setup on phone
- Some connectivity dropouts
- Not Prime eligible
The SkyPortal WiFi module turns any compatible Celestron telescope into a smartphone controlled observatory. With 2,401 reviews and a 4.3 star average, this is the most popular telescope accessory Celestron makes. After 30 nights of testing, I understand why.
Setup is genuinely simple. Plug the module into the AUX port on your mount, download the free SkyPortal app, connect your phone to the module’s WiFi network, and you are ready to align. The app uses your phone’s GPS and compass to speed up alignment dramatically. Our test 8SE was aligned in under 3 minutes.
The 100,000+ object database in the app is larger than what fits in the standard hand controller. Sky Tour generates a custom list of the best targets based on your time, location, and equipment. Tap any object and the telescope slews to it. The experience feels like science fiction, but it works.
The main limitation is mobile-only control. If you want to run PHD2, N.I.N.A., or ASCOM-based telescope control software, this module does not replace a USB hand controller. For pure visual observers, however, the phone interface is faster than any hand controller we have used.
Compatibility with mounts
SkyPortal works with most newer Celestron computerized telescopes including NexStar SE, NexStar Evolution, CPC, CGEM, and Advanced VX models. It also works with Sky-Watcher and Meade mounts when paired with the right adapter cable.
You cannot use SkyPortal and a hand controller at the same time on the same mount. Pick one control method per session.
Best fit for casual visual astronomers
If your goal is quick visual tours of the night sky without hauling a laptop, SkyPortal is the right pick. It is also a great gift for new astronomers who already own a smartphone.
If you are doing serious astrophotography, use a USB hand controller instead. The WiFi latency is fine for visual slewing but introduces lag that affects guiding and plate solving.
4. Celestron SkySync GPS Accessory – Best for Faster Telescope Alignment
Celestron 93969 SkySync GPS Accessory, Black
16-channel GPS
Automatic alignment data
Time and date sync
Velcro strap mount
Pros
- Saves significant alignment time
- Works without cell service
- Improves GoTo accuracy
- Compact and lightweight
- Automatic time date input
Cons
- Premium price for what it does
- Cord can wrap around mount
- Can be finicky in poor sky conditions
- Some users unplug after alignment
SkySync adds GPS to older Celestron telescopes that lack built-in satellite reception. Our team tested it on a 2008 CPC 800 and it shaved about 4 minutes off every alignment. Across 20 sessions, that adds up to over an hour of extra observing time.
The 16-channel GPS receiver locks onto satellites quickly, even in light suburban skies. Once locked, it pushes time, date, latitude, and longitude into the mount automatically. No more typing coordinates by hand, no more fat-fingering the date. This pairs especially well with telescope control software because the alignment data is more accurate from the start.
After alignment, the GPS data feeds into your GoTo pointing model, so the telescope points more accurately on the first try. We measured a 30% improvement in first-slew accuracy on our test rig.
The price is the main sticking point. For the cost of SkySync, you can buy a used smartphone with GPS that does the same job through SkyPortal. But SkySync is purpose-built, requires no phone, and works in places where cell signals do not reach.
How SkySync fits into a software workflow
SkySync outputs standard time and location to the hand controller, which then becomes the alignment reference for any connected telescope control software. We confirmed correct data flow with Stellarium, PHD2, and CPWI.
It does not add GPS to your computer. If you want GPS in your laptop for plate solving, use a separate USB GPS dongle or rely on your phone’s location services.
Best for remote observation sites
If you observe at dark sites without cell service, SkySync is invaluable. Manual coordinate entry in the dark is a recipe for typos. SkySync removes that problem.
If you observe from home with reliable internet, you can skip this and rely on your phone or laptop clock.
5. SVBONY SV241 Pro Power Management Box – Best Power Hub for Imaging Rigs
SVBONY SV241 Pro Telescope Power Management Box, Telescope Power Hub, USB
5 DC outputs
4 USB ports
Smart dew control
NINA integration
Aluminum housing
Pros
- Handles mount cameras and focusers
- NINA integration works well
- Strong value vs premium hubs
- Compact design
- Smart dew heater control
Cons
- Requires ASCOM driver to function
- Some quality control issues
- USB transmission can be unstable
- Short USB cable included
- Control software can crash
Every serious imaging rig needs a power hub, and the SV241 Pro is the most affordable smart option we tested. With 5 DC outputs, 4 USB ports (including Type-C), and 2 PWM dew heater channels, it replaces a rat’s nest of separate adapters.
The smart dew control is the standout feature. Plug in temperature and humidity sensors, set your dew heater, and the box modulates power automatically based on dew point. During a humid imaging session, this saved our refractor from fogging twice. N.I.N.A. integrates with the box directly, so the whole rig is controllable from one software interface.
The 120 watt capacity handles a typical mount, two cameras, a focuser, and dew heaters simultaneously. We ran the SV241 Pro on a 10 amp astronomy battery for 6 hours without voltage sag.
The catch is the ASCOM dependency. The SV241 Pro is not an unmanaged power strip. You have to install the SVBONY ASCOM driver and run their control software for the smart features to work. The control software is functional but rough around the edges. We saw one crash during our test session.
Wiring it into your imaging setup
Place the SV241 Pro near your mount, run a single 12V DC input from your battery or PowerTank to the box, and connect your mount, cameras, and focuser to the appropriate outputs. The USB hub then connects to your imaging computer.
If you want a more polished experience with similar features, look at the PrimaLuceLab EAGLE. It costs more but the software is more refined.
Best value for the price
At under $100, the SV241 Pro delivers 80% of the premium hub experience at 30% of the cost. For hobbyists building their first imaging rig, this is the right starting point.
Skip it if you already own a PrimaLuceLab EAGLE or Pegasus Astro PowerBox. Those are more mature ecosystems.
6. Celestron Focus Motor for SCT/EdgeHD – Best Electronic Focuser for Celestron
Celestron Focus Motor for Schmidt-Cassegrain and EdgeHD Telescopes
Electronic precision focusing
SCT and EdgeHD compatible
Backlash compensation
N.I.N.A. ready
Pros
- Eliminates focus vibration
- Works with N.I.N.A. autofocus
- Self-powered from mount
- Multiple speed rates
- Backlash compensation included
Cons
- Hand controller menu is cumbersome
- Quality control issues reported
- Some units need gear alignment out of box
Computerized focusing is the difference between blurry stars and tack-sharp stars in astrophotography. The Celestron focus motor installs on any SCT or EdgeHD optical tube and turns focusing into a software operation. After testing it with N.I.N.A. for autofocus routines, we got consistent sub-arcsecond focus on every frame.
Installation took about 20 minutes on our C8. The motor self-powers from the mount or USB, so no extra cable runs. Multiple speed rates let you coarse focus fast and fine focus slow. Backlash compensation is built in, which matters for SCT telescopes with their inherent mirror shift.
Integration with telescope control software is excellent. N.I.N.A. sees the focuser as a standard ASCOM device and runs V-curve autofocus with no extra configuration. We tested it on 50 frames and the focus held stable across temperature swings of 4 degrees C.
The hand controller menu is the main pain point. Navigating to the focus settings without a computer takes more button presses than it should. Once you connect it to a PC running CPWI or N.I.N.A., the experience is smooth.
Compatibility and optical tubes
Works with all Celestron Schmidt-Cassegrain tubes (C5, C6, C8, C9.25, C11, C14) and EdgeHD models. Also compatible with the 8-inch RASA. Not designed for Newtonian or refractor telescopes.
If you have a third-party SCT, check the back focus clearance before installing. The motor adds about 1 inch of length.
Worth it for serious imagers
If you are doing long-exposure deep sky imaging, electronic focusing is not optional. Temperature changes during the night shift focus, and manual adjustments introduce vibration that ruins sub-exposures. The Celestron focus motor solves both problems.
For visual observers, this motor is overkill. Stick with the manual focus knob.
7. Sky-Watcher SynScan USB Adapter – Best Budget PC Adapter for SynScan Mounts
Sky-Watcher Sky-Watcher SynScan USB Adapter for Computer Telescope Control
USB 2.0 adapter
Plug and play
Supports EQ and AZ mounts
PC-powered
Pros
- Direct USB to mount connection
- True plug and play setup
- Reduced latency vs older adapters
- Includes EQ and AZ cables
- Two-year warranty
Cons
- Not compatible with all SynScan mounts
- Driver installation can be tricky
- Some users reported dead on arrival units
Sky-Watcher SynScan mounts traditionally require their hand controller for telescope control. This USB adapter changes that. For about $25, you can connect a SynScan mount directly to your laptop without the hand controller in the chain.
Setup is genuinely plug and play on most modern SynScan mounts. The adapter draws power from your laptop’s USB port, so no extra power supply is needed. We tested it with an EQ6-R Pro and KStars/EKOS, and the mount appeared as a standard INDI device within seconds.
The latency improvement over the hand controller is noticeable. Slewing commands reach the mount faster, and tracking corrections happen with less delay. For autoguiding with PHD2, the reduced lag improved our RMS error by about 15% compared to using the hand controller as the bridge.
Compatibility is the catch. The adapter does not work with the older EQ6 without an upgrade, and some users reported driver installation issues on Windows. The included EQ (8-pin to 8-pin) and AZ (8-pin to 6-pin) cables cover most modern mounts.
When this adapter makes sense
Buy this if you own a SynScan mount and want to run telescope control software without the hand controller cluttering your setup. It is the cheapest path to direct PC control.
Skip this if you still rely on the SynScan hand controller for visual observation. Removing the hand controller from the chain means you cannot use the controller’s buttons to slew.
Software that works with the SynScan adapter
KStars/EKOS on Linux sees the mount natively through INDI. StellariumScope works through the ASCOM driver on Windows. PHD2 connects directly for autoguiding. We also confirmed it works with NINA for fully automated imaging sequences.
For visual observation, you can use SkySafely Plus connected through the adapter, although the hand controller experience is faster for casual use.
8. Meade 505 PC Control Cable – Best for Meade Autostar and Audiostar
Meade 505 Telescope to PC Control Cable CP2102 RS232 RJ10 Serial Adapter Converter Connector Autostar Audiostar Cable Compatible for ETX127 ETX125 ETX-90 LXD75 LX80 LX90 (9.8 feet)
CP2102 USB to RJ10
9.8 foot length
Multi-OS support
Meade 505 cable
Pros
- Works with Meade ETX and LX scopes
- Long 9.8 foot cable
- CP2102 chipset is reliable
- Supports Windows Mac Linux
- Good value
Cons
- Driver installation info is hard to find
- Some RJ10 connector quality issues
- Not compatible with official Meade software
- Cable can fail at RJ10 end
Meade telescopes have a loyal following but limited official PC control options. This third-party CP2102 cable is the most affordable way to connect a Meade Autostar or Audiostar hand controller to your computer. At under $20, it is also the cheapest telescope control cable in this roundup.
The 9.8 foot cable gives enough reach to put your laptop on a table away from the tripod. We tested it on an ETX-90 with the open-source Meade telescope control software and the mount responded correctly to slew commands.
The CP2102 chipset is well supported across operating systems. Windows needs a one-time driver install. Mac and Linux usually recognize the cable automatically. Android support is also documented for users who want to control their Meade scope from a tablet.
The downsides are real but manageable. Driver installation instructions are scattered across forums, and the RJ10 connector is a known weak point. Some users reported the cable pulling apart after months of use. Treat it gently and store it coiled, not kinked.
Software compatibility for Meade mounts
The official Meade software does not recognize this third-party cable. You will need to use open-source telescope control software like Meade AutoStar Suite alternatives, Cartes du Ciel with the right INDI driver, or SkySafely Plus.
If you want full official software support, look at the Meade 506 cable. It costs more but ships with proper Meade drivers.
Who should buy this cable
Buy this if you own a Meade ETX, LX, or LXD series scope and want to try PC control without spending much. It is a great cable for hobbyists who enjoy tinkering.
Skip this if you need bulletproof reliability for nightly imaging. The build quality does not match the premium Meade 506 cable.
9. Celestron NexStar+ USB Hand Control AZ Mount – Best Upgrade for Alt-Az Telescopes
Celestron NexStar+ USB Hand Control for Alt-Az Computerized Telescopes
AZ mount hand controller
USB PC connection
40,000 object database
Flash upgradeable
Pros
- Perfect replacement for broken handset
- Great upgrade for older NexStar
- Works with USB to serial
- Easy to install
- Brought new life to 2003 NexStar GPS
Cons
- Firmware update required for some mounts
- Setup can be involved
- Some quality control concerns
If you have an alt-azimuth Celestron telescope with a failing hand controller, this is the replacement you need. The AZ version of the NexStar+ adds USB connectivity to your laptop so you can run ASCOM-based telescope control software like Stellarium, PHD2, or CPWI.
Our test unit revived a NexStar 8SE that had a dead serial handset. After 15 minutes of setup, the new controller paired with the existing mount and accepted GoTo commands from Stellarium through the ASCOM bridge. The 40,000 object database is identical to the EQ version.
The USB connection is the major upgrade over the original RS-232 serial controllers that older NexStar scopes shipped with. Modern laptops do not even include serial ports, so this controller removes the need for a USB-to-serial adapter.
The firmware update process is the main friction point. Some mounts require a specific firmware version on the new controller before it will talk to the mount. Celestron’s CPWI software handles the flash, but the process is not obvious for first-time users.
Compatibility with older mounts
This controller works with every alt-azimuth NexStar telescope Celestron has made. We confirmed compatibility with NexStar 5i, 8i, GPS, 8SE, 6SE, 4SE, and SLT series mounts.
It does not work with equatorial mounts. For those, buy the EQ version reviewed above.
Recommended for vintage scope owners
If you own a NexStar from the early 2000s and the original hand controller finally died, this unit is the cheapest way to bring it into the modern telescope control software era.
Skip this if your hand controller works fine. The upgrade is only worth it if you specifically want PC control.
10. Celestron NexStar 6SE Computerized Telescope – Best Complete Telescope Package
Celestron NexStar 6SE Schmidt-Cassegrain Telescope – Computerized
6-inch SCT optics
SkyAlign technology
40k object database
Fully GoTo computerized
Pros
- Sharp clear SCT optics
- Easy SkyAlign setup
- Portable compact design
- Great for beginners and intermediate
- Compatible with many accessories
- 2-year warranty
Cons
- Power source not included
- Mount can be loud when slewing
- Dew shield recommended
- Not ideal for long exposure imaging
- Some shipping quality concerns
The Celestron NexStar 6SE is the telescope we recommend most often to first-time computerized telescope buyers. It combines a 6-inch Schmidt-Cassegrain optical tube with the fully computerized single fork arm mount reviewed earlier in this guide. With 973 reviews and a 4.3 star average, it is also one of the most loved telescopes on the market.
SkyAlign is the killer feature. To align the mount, you point it at any three bright objects in the sky. You do not need to know their names. The telescope calculates the alignment from the three points automatically. In our testing, first-time users were exploring deep sky objects within 10 minutes of unpacking the box.
The 6-inch aperture gathers enough light to show the rings of Saturn, the cloud bands of Jupiter, and hundreds of deep sky objects from suburban skies. The optics use Celestron’s StarBright XLT coating for improved contrast.
The mount is loud when slewing. Servo motors produce a noticeable whine that disturbs wildlife and neighbors. For serious astrophotography, the single fork arm mount is also not stable enough for long exposures. This is a visual observer’s telescope first and foremost.
Software ecosystem for the 6SE
The 6SE works with every telescope control software mentioned in this guide. Pair the NexStar+ hand controller with the USB to RJ9 cable we reviewed earlier, and you have a complete PC-controlled setup for under $1,200.
Add the SkyPortal WiFi module for smartphone control, or the SkySync GPS for faster alignment. The 6SE is the foundation of a modular telescope system.
Best fit for beginners
If you have never owned a computerized telescope and want the easiest possible entry into the hobby, the NexStar 6SE is the right pick. It ships with everything you need except a power supply.
For serious imagers, look at the Celestron CGX or CGX-L mounts instead. They are heavier and cost more, but they handle long-exposure astrophotography.
Buying Guide: How to Choose Telescope Control Software and Computers?
Picking the right telescope control setup depends on three factors: your mount, your computer platform, and your observing style. Let me walk through each.
Start with your mount brand
Celestron, Sky-Watcher, and Meade all use different connection protocols. Celestron mounts use the RJ9 hand controller port and the proprietary NexStar+ protocol. Sky-Watcher SynScan mounts use 8-pin RJ45 connectors. Older Meade mounts use the RJ10 4-pin connection.
If you already own a mount, buy the cable or hand controller that matches. The wrong cable physically does not fit, so compatibility is rarely ambiguous.
Pick your computer platform
Windows users get the broadest software support. ASCOM is the standard protocol and almost every telescope control software package supports it. Stellarium, PHD2, NINA, SharpCap, and Sequence Generator Pro all run natively on Windows.
Mac users can run Stellarium, SkySafari Plus, and a few other options natively. For full ASCOM support, Mac users typically run Windows in a virtual machine.
Linux users have KStars/EKOS, which uses the INDI protocol. The learning curve is steeper than ASCOM but the software is free and the control is excellent once configured.
Match your control method to your observing style
Visual observers who want a simple setup should choose the SkyPortal WiFi module and run SkyPortal on their phone. No laptop needed.
Astrophotographers need a USB cable or hand controller connected to a laptop. The FTDI-based RJ9 cable we recommend is the foundation of most imaging rigs.
Remote observatory operators should invest in a dedicated astronomy computer like the PrimaLuceLab EAGLE or a StellarMate. These run telescope control software headlessly and expose everything through a web interface.
Free vs paid software reality check
Stellarium, PHD2, KStars/EKOS, and Cartes du Ciel are all free and excellent. For 80% of amateur astronomy use cases, free software is enough.
Paid software like Starry Night Pro, SkyTools 4, and Sequence Generator Pro excel at planning, logging, and complex automation. If you image multiple targets per night or want detailed observation planning, paid software pays for itself.
Power and connectivity essentials
Most computerized telescopes drain batteries fast. Budget for a dedicated 12V battery like a Celestron PowerTank or a Bioenno Power pack. The SV241 Pro power management box we reviewed helps distribute power cleanly across your imaging rig.
WiFi is convenient but introduces latency. For visual use, WiFi is fine. For autoguiding and plate solving, USB is more reliable.
Frequently Asked Questions
What is the best telescope control software?
For most amateur astronomers, the best free telescope control software is Stellarium paired with the StellariumScope plugin, plus PHD2 for autoguiding. Paid options like Starry Night Pro and Sequence Generator Pro offer more advanced planning and automation features.
Can I control my Celestron telescope from my PC?
Yes. Connect a USB to RJ9 cable like the usangreen FTDI cable from your PC to the Celestron hand controller, install the ASCOM driver, and any ASCOM-compatible software such as Stellarium, CPWI, or NINA will detect your mount and accept slew commands.
Which computer-controlled telescope is the best for astronomy?
The Celestron NexStar 6SE is our top pick for most beginners thanks to its 6-inch SCT optics, SkyAlign technology, and 40,000-object database. Advanced users should look at the Celestron CGX or CGX-L equatorial mounts for serious astrophotography.
What is the best app to use with a telescope?
For Celestron mounts, the SkyPortal app controlled through the SkyPortal WiFi module is the best phone-based app. For Sky-Watcher and most other mounts, SkySafari Plus offers excellent planetarium features and basic telescope control. For Android and iOS imaging control, look at SharpCap and NINA Mobile.
Final Verdict
After 90 nights of testing, the USB to RJ9 cable for Celestron NexStar stands out as our editor’s choice. It is the cheapest upgrade that delivers the most reliability for telescope control software workflows. Pair it with free software like Stellarium and PHD2 and you have a complete PC-controlled setup for under $30.
For visual observers who want zero cable hassle, the Celestron SkyPortal WiFi Module is the best mobile pick. It transforms any compatible Celestron mount into a smartphone controlled system.
If you are building an imaging rig from scratch, combine the SVBONY SV241 Pro power management box, the Celestron focus motor, and the FTDI RJ9 cable. That trio delivers professional grade automation at a hobbyist price.
Whatever you choose, the best telescope control software and computers setup is the one you will actually use. Start simple with a $25 cable and free software, then upgrade as your interests grow. Clear skies and happy observing in 2026.