AstroLink 4 micro
AstroLink 4 micro – very compact size (15x5cm) multifunctional controller for astrophotography setups. Focusing motor controller, three 12V DC outputs switch, two dew cap heaters regulated outputs, multiple sensors available: temperature/humidity for temperature compensation and dew heaters automation, sky temperature/cloud coverage, sky brightness. Also, a manual controller for the focuser is available. AstroLink 4 micro can be stacked with a 7-port USB3.0 active hub model Y-3184 to create a compact and powerful astrophotography setup control unit.
ASCOM (focuser, switch, observing conditions, and safety monitor) and INDI drivers are available as well as dedicated control software.
AstroLink 4 mini II
AstroLink 4 mini II – multifunctional controller for astrophotography setups. Focusing motors controller, four 12V DC outputs switch, two dew cap heaters regulated outputs, multiple sensors available: temperature/humidity for temperature compensation and dew heaters automation, sky temperature/cloud coverage, sky brightness. Also, a manual controller for the focuser is available. Additional regulated voltage output is also present.
Two focusing motors can be connected to this device, so you can control both the main telescope focuser, and also guider focuser, or SCT telescope mirror focusing knob at the same time.
ASCOM (focuser, switch, observing conditions, and safety monitor) and INDI drivers are available as well as dedicated control software.
AstroLink 4 USB
AstroLink 4 USB – another multifunctional controller for astrophotography setups. Focusing motor controller, four 12V DC outputs switch, two dew cap heaters regulated outputs, multiple sensors available: temperature/humidity for temperature compensation and dew heaters automation, sky temperature/cloud coverage, sky brightness. Also, a manual controller for the focuser is available. Additional 5V DC voltage output is present.
There is an integrated USB hub inside that exposes three USB 3.0 outputs in the device for connecting peripherals.
ASCOM (focuser, switch, observing conditions, and safety monitor) and INDI drivers are available as well as dedicated control software.
AstroLink 4 Pi
AstroLink 4 Pi – standalone astrophotography setup controller based on Raspberry Pi 4. Connect to a 12V DC power supply, attach your setup peripherals, and you are ready to work! AstroLink 4 Pi has several modules already inside, so you do not need additional controllers: the focusing motor controller is there, so you can connect your own or one of our motors. DC power switch to distribute 12V power to your equipment is present. Regulated outputs for dew heaters are also already there. Additional regulated voltage output to power DSLR or USB hub is available. And last but not least selection of sensors can be connected to AstroLink 4 Pi: temperature/humidity, sky temperature/cloud coverage, and sky brightness sensor as well.
AstroLink 4 Pi works under the control of the astroberry system, and a dedicated INDI driver is used to cover all functionalities you need.
FocuserOne
FocuserOne – focusing motor controller. Connect any stepper motor you already own, or select the one from our offer, and you are all set!
ASCOM and INDI drivers are available, a dedicated control software, an environment monitoring sensor, manual control buttons, focuser temperature compensation, and an OLED display.
FocuserOne device can also work as rotator control – a dedicated ASCOM driver is available.
FocuserLink
FocuserLink is a standalone focusing solution – it is a geared stepper motor integrated with the controller. Connect to the 12V power and you are all set! You may control the focus using the manual keypad, or connect the device to the computer using a USB cable and have a fully functional focusing solution.
ASCOM and INDI drivers are available for the FocuserLink, a dedicated control software, temperature/humidity sensor, and manual keypad as well.
Sensors
Sensors play an important role in the astrophotography setup. There are several sensor types available for our devices. Temperature and humidity sensor monitors the ambient conditions and is used to do focuser point temperature compensation and dew heater automated control. Sky temperature/ cloud coverage sensor measures the level of sky transparency. The sky brightness sensor measures the sky background brightness. All these measurements are presented in the control software but also are exposed in ASCOM observing conditions and safety monitor drivers.
Focusing motors
Focusing motors are the key part of an astrophotography setup. We offer unipolar stepper motors with integrated gear-box. They offer high resolution, low power consumption, and do not need to be powered on idle to keep their position. But the focusing controllers we have (all AstroLinks and FocuserOne) can also be connected to popular bipolar motors and switched to microstepping resolution, so customers can select or use any stepper motor they currently have.
Dew heaters and controllers
Dew heaters are available in different sizes. Smaller bands are also available with USB receptacles, so they can be connected to a 5V power bank to operate in the field. Manual power regulators for dew cap heaters can be also found in our offer.
AstroLink devices comparison table
| | | |  |
|
| AstroLink 4 Pi | AstroLink 4 mini II | AstroLink 4 USB | FocuserOne | |
| Size | 137 x 83 x 32 mm | 122 x 86 x 28 mm | 162 x 92 x 29 mm | 98x62x28mm |
| Weight | 230g | 160g | 215g | 94g |
| Focuser outputs | 1 | 2 | 1 | 1 |
| Microstepping support | yes | yes | yes | yes |
| 12V switchable outputs | 2 | 3 | 3 | 0 |
| 12V permanent outputs | 1 | 1 | 1 | 0 |
| PWM regulated outputs | 2 | 2 | 2 | 0 |
| Adjustable voltage output | yes | yes | no | no |
| 5V output | no | yes (option) | yes | no |
| Temperature sensor support | yes | yes | yes | yes |
| Humidity sensor support | yes (v3) | yes | yes | no |
| Sky temperature sensor support | yes (v3) | yes | yes | no |
| Integrated USB hub | no | no | yes, USB3.0 | no |
| Integrated OLED display | no | no | no | yes |
| Control mode | remotely (WiFi) with integrated Raspberry Pi module and astroberry system with INDI driver | from PC with ASCOM/INDI driver | from PC with ASCOM/INDI driver | from PC with ASCOM/INDI driver |
Software and downloads
| AstroLink 4 mini S | AstroLink 4 USB | AstroLink 4 mini II | AstroLink 4 micro | FocuserOne | FocuserLink | |
|---|---|---|---|---|---|---|
| Panel application | 4.2.0 | 4.8.0 | 4.9.0 | 4.6.10 | 2.4.0 (v2 only) | 1.0.0 |
| ASCOM driver | 1.5.0 | 3.2.4 | ||||
| ASCOM driver #2 | N/A | 3.2.4 #2 | ||||
| Firmware | 4.2.0.1 | 20230129 | ||||
| Documentation | ||||||
| Tutorials | YT | YT | ||||
| Enclosure model | STL | STL | ||||
| INDI driver | INDI | INDI | INDI | INDI | INDI | |
| Other | Rotator driver | |||||
| FTDI drivers | FTDI Virtual COM Port Drivers | |||||
| CP210x drivers | Silicon Labs Virtual COM Port drivers | |||||
