Related Manuals for PEGASUSASTRO Uranus Meteo Sensor
Summary of Contents for PEGASUSASTRO Uranus Meteo Sensor
- Page 1 URANUS METEO SENSOR PRODUCT MANUAL Version 2022-Oct-01 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 2 Uranus Meteo Sensor VERSION HISTORY Version # Implemented By Revision Date Reason Evans Souglakos 25/06/2022 Initial Document Evans Souglakos 01/10/2022 Add Mechanical Drawings. Add Emissivity for IR Sensor. Modify Buttons Operation. Page 2 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
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Page 3: Table Of Contents
Set Timezone ......................36 Set Sleep After ...................... 36 Set Light Readout Offset ..................36 Set Infrared Sensor Emissivity ................36 DIMENSIONS ..........................37 10 TECHNICAL SPECIFICATION ..................37 Page 3 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... - Page 4 Uranus Meteo Sensor 11 ENVIRONMENT ........................38 12 WARRANTY .......................... 38 13 SUPPORT ..........................38 Page 4 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
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Page 5: Introduction
1 INTRODUCTION PURPOSE Thank you for purchasing the Uranus Meteo Sensor. This pocket-sized device is an all-around astronomer, astro-imager companion. Smaller than the size of a cigarette box, and equipped with a variety of digital sensors, can precisely report the ambient temperature, humidity, pressure, cloud height, cloud coverage, astronomical dawn, twilight time, and the night sky brightness. -
Page 6: Device Description
Uranus Meteo Sensor 2 DEVICE DESCRIPTION DESIGN OVERVIEW Page 6 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... -
Page 7: Battery Operation
During charging sequence, the battery pack produces some heat (a normal condition during any battery charging). Despite the fact that all temperature sensors are placed into a different compartment of the aluminium enclosure (to Page 7 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... -
Page 8: Usb Operation
5 minutes of inactivity (default sleep interval – can be changed from Unity software). Sleep mode is practically, to the user experience, a full shut down of the device. Page 8 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... -
Page 9: Device Reset
This ensures that each optical sensor ‘s field of view is not obstructed by an object (such as the telescope tube itself). Page 9 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... -
Page 10: Sensors
As the temperature sensor, each reading is taken every 15 seconds to minimize internal sensor heat- up and reduce power consumption. The below image shows the humidity sensor operating range Page 10 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... -
Page 11: Barometric Pressure
(ambient light level) in lux is derived using an empirical formula to approximate the human eye response. Lux readings are converted to Magnitudes per square arcsecond, abbreviated as MPSAS. In addition, Uranus calculates the NELM (Naked Eye Limit Magnitude) and Bortle Scale. Page 11 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... - Page 12 The light sensor has a 25° FOV opening, covering range, which is appropriate to Page 12 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
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Page 13: Cloud Infrared Sensor
Uranus incorporates an ultra-low consumption and fast position GPS receiver. The receiver has 66 acquisition channels, 22 tracking channels and can calculate, and predict orbits automatically using the ephemeris data (up to 3 days) stored in Page 13 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... - Page 14 GPS receiver updates from Uranus processor for new GPS data every one second (1Hz). (This can change to higher update rates (up to 10Hz) – will be supported in future firmware releases) Page 14 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 15 NMEA GPS lines. This port can be used to provide GPS data to other devices such as telescope mounts that accept NMEA messages. 6P6C GPS NMEA Output Pinout PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 Page 15 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
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Page 16: Memory Banks
Memory banks can be read or fully wiped from (Unity Platform) software. The technology of this RAM (FRAM) ensures that memory can last for multiple billions of write or erase cycles. Page 16 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... -
Page 17: Device Operation
A full charge time may take 2.5 hours when the battery is at very low power levels. Page 17 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... - Page 18 Please note that the internal charging circuit automatically cuts battery charging sequence when the battery comes to a fully charged level so no need to worry about when to unplug the USB cable). Page 18 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
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Page 19: Mobile Usage
Keep pressing [>>] (Measure) button for 5 seconds to turn off the display. Device will still enter in sleep mode after the configured time period. Press any button to turn it on again Page 19 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... - Page 20 Keep pressing [<<] (Store) button for 2 seconds to store all retrieved sensor data into the device's next available memory bank. (By the time you press the store button a sky quality measurement is automatically taken and included into the memory bank). Page 20 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
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Page 21: Remote Usage
This ensures that light from screen 1) will not affect astronomical observations inside a roll-off observatory or any other facility. 2) will not affect the Sky Quality measurement. Page 21 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... -
Page 22: On Screen Display
• Humidity (Relative) refers to the moisture content (i.e., water vapor) of the atmosphere, expressed as a percentage of the amount of moisture that can be retained by the atmosphere (moisture-holding capacity) at a given temperature and pressure without condensation. Page 22 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... - Page 23 (from the image below) appears on screen. 2%, 10%, 25%, 50%, 75%, 100% , On USB power or charging mode. Page 23 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 24 Knowing the temperature and relative humidity we can easily calculate the cloud base. The base of the cloud forms at the altitude at which the rising air cools and condensation starts. Page 24 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 25 GPS time (stratum 0) and calculates the local time by offsetting your time zone. (Your time zone offset can be set from Unity software and is stored in the device’s memory). Page 25 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 26 Determine the difference between the two timestamps to calculate how long it took to get from Point A to Point B. o Calculate the average speed based on these results Page 26 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 27 18 degrees below the horizon in the evening. Astronomical Dawn is the moment when the geometric center of the Sun is 18 degrees below the horizon in the morning. Page 27 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 28 Theoretically, the faintest stars detectable by the naked eye (those of approximately the sixth magnitude) will become visible Page 28 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 29 ➢ Overcast, Cloudy, Spare Clouds, Haze, Clear. • Temperature Difference On the bottom right of the display, the difference in degrees between the ambient temperature and the sky temperature is displayed Page 29 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 30 60 minutes. Each minute is divided into 60 seconds. A square arc second has an angular area of one Page 30 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 31 • LUX: The lux is the unit of illuminance in the International System of Units ( SI ). It is defined in terms of lumen s per meter squared (lm/m ). Lux describes how much light falls on a certain area. Page 31 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
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Page 32: Measurement Considerations
Zodiac Light will affect the light measurement (increases brightness) to lower MPSAS values (in dark skies) if you point towards this direction. Page 32 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... - Page 33 Aurora increases brightness measurement in a factor that a light measurement is useless. Page 33 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
- Page 34 Other obstacles such as building walls or people close to the angle of sensor measurement can also affect the light sensor readout. Please, make sure that your field of view is clear from any obstacles. Page 34 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...
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Page 35: Cloud Coverage
(or winter vs summer) plays a significant role in the calculation and makes this crucial to determine if sky is clear or has spare clouds. Page 35 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... -
Page 36: Configuration Changes
0.05. Painted aluminium has an emissivity of 0.45. In cloud detection algorithm we use emissivity of 1.0. Emissivity value can be configured from Unity Platform software. Page 36 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... -
Page 37: Dimensions
NMEA 6P6C socket (10Micron pinout compatible) Buttons 2 x Push buttons on top Reset Button On the side of the device 3.3V / 60mA during operation, 10μA during sleep Power Consumption Page 37 of 38 Pegasus Astro - Uranus Meteo Sensor Manual... - Page 38 -30 °C to +60 °C and humidity up to 99% 12 WARRANTY The device is covered by two years of warranty. 13 SUPPORT For any issue, questions or feedback and recommendations please contact us via email: support@pegasusastro.com Page 38 of 38 Pegasus Astro - Uranus Meteo Sensor Manual...