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Lunatico Astro Lanternfish Sky Brightness Monitor

Lunatico Astro Lanternfish Sky Brightness Monitor

Starting Price: $199.00 Sale Price: $139.30 Price as Configured: $139.30
Brand: Lunatico Astro / SKU: LA-ACWLAN01
Lanternfish is a compact, easy-to-use device designed for astronomers and observatories who need accurate sky brightness measurements in MPSAS without having to choose between different versions or configurations.

It combines wireless access, reliable data logging and flexible operation in a single device, suitable for both field use and permanent installations.
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Price as Configured: $139.30
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Sky Quality Meter (MPSAS, Wi-Fi)
One device. No separate versions.


Lanternfish is a compact sky quality meter for measuring night sky brightness in MPSAS.

Unlike many existing sky quality meters, which are offered in different versions depending on the interface (USB, Ethernet, display, etc.), Lanternfish integrates all these functions into a single device. This avoids having to choose between models and makes it easier to use it. It provides autonomous data logging and direct access via Wi-Fi, without the need for external hardware or software.

Key points

  • Single device - No need to choose between different models or interfaces.
  • Autonomous operation - Can record measurements without a computer connected.
  • Wi-Fi access - The integrated web interface can be accessed from any browser.
  • Data logging - Measurements are recorded automatically with date and time.
  • Portable or fixed use - Can be used hand-held, on a tripod, or as part of a permanent installation.

Main features

  • Sky brightness measurement in MPSAS
  • Compact, torch-like design for quick measurements
  • Automatic data logging with date and time
  • Wi-Fi access via integrated web interface
  • Data export in CSV format
  • Adjustable measurement modes
  • Programmable automatic shutdown
  • OLED display
  • Rechargeable battery with autonomy for several nights, depending on usage mode

Simple operation

Point Lanternfish at the sky and take a measurement instantly, or run it in a programmed mode. It can operate continuously, recording data at configurable intervals throughout the night. Data is available via the integrated web interface or can be exported in CSV format.


Use cases

  • Site testing and sky quality monitoring
  • Light pollution measurement
  • Portable or field use
  • General night sky monitoring and site evaluation
Simplifying sky quality measurement
Lanternfish avoids the need to work with different devices or configurations. All core functions — measurement, logging, display and connectivity — are handled in a single unit.

Key specifications

  • Measurement unit: MPSAS
  • Connectivity: Wi-Fi (integrated web interface)
  • Data logging: internal memory with timestamp
  • Data export: CSV
  • Display: OLED
  • Power: rechargeable battery
  • Operation modes: manual and automatic
Technical specifications
Lanternfish is designed for reliability and ease of use, combining precise measurement with autonomous operation and low power consumption.

Below are the key technical details.

Feature Specification
Measurement Unit Magnitudes per square arcsecond (MPSAS) *
Sensor Type Light sensor with calibrated spectral response
FoV 18º
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.