LANTERNFISH
Accurate, Wi-Fi enabled sky quality meter for astronomy and observatory automation.
Smart, simple, and ready for the night sky
Lanternfish is a compact, easy-to-use device designed for astronomers and observatories who need to measure sky brightness with precision and ease. It offers standalone operation, reliable data logging, and wireless access – making it ideal for both field observations and permanent installations.
Standalone Wi-Fi
Connects directly,
no app or PC needed.
Date & Time Logging
Records sky quality
with timestamp.
Live Data Display
View MPSAS on device screen or
internal web page.
Night Mode
Automatically runs and powers off
at night.
Custom Settings
Set your own measurement intervals
and preferences.
JSON Data Access
Retrieve structured data for integration
or analysis.
Lanternfish is our most compact and autonomous tool for sky brightness measurement, using MPSAS units to quantify light pollution.
Technical specifications:
| Feature | Specification |
|---|---|
| Measurement Unit | Magnitudes per square arcsecond (MPSAS) * |
| Sensor Type | Light sensor with calibrated spectral response |
| Wi-Fi | Standalone access point, no external network required |
| Data Access | Internal web server and JSON format export |
| Display | OLED screen showing live and stored data |
| Timekeeping | Built-in real-time clock (RTC) with battery backup |
| Data Storage | Internal memory for historical measurements |
| Measurement Interval | Configurable – from 1 minute to several hours |
| Power Supply | USB rechargeable battery |
| Battery Life | Up to 24 hours of operation on a single charge |
| Automatic Shutdown | Programmable for power saving and night-only use |
| Dimensions | Approx. 135 mm x 28 mm x 28 mm |
| Weight | Approx. 120 g |
| Operating Temperature | -10 °C to 45 °C |
| Software Interface | Embedded web interface, accessible via browser |
| Firmware Updates | Via Wi-Fi connection (OTA updates) |
* MPSAS stands for Magnitudes per Square Arcsecond, a standard unit for measuring night sky brightness. Higher values indicate darker skies.