OMEA


The purpose of these systems is to carry out All or Full Sky surveillance of the night or day sky, and in a continuous fashion. It is possible to assess, in real time, the night sky quality, and to record fast phenomena (meteors and fireballs) or slower (satellites, rockets, noctilucent clouds, zodiacal light, aurora, airglow ....).

Thanks to its high sensitivity, this system can record a very good image quality of the night sky, while producing images of stars that will not be trailed by natural Earth rotation, no star tracking is required.
See HERE a real time view of some of our ALL SKY camera running worldwide. 
Here is a PDF file describing how our ALL-SKY camera can be used for (application fields)
The OMEA camera is out flagship camera that embeds a dome heating system, based on environment humidity and temperature.
Name Sensor Fisheye circle 
"Illuminated" pixels
Detector resolution Field of view Pixel Scale Daylight 
imaging
OMEA 6M Monochrome 4.5 Million pixels 3100 x 2100 pixels 180° x 130° 3.3 arcmin/pix Yes
OMEA 6C Color 4.5 Million pixels 3100 x 2100 pixels 180° x 130° 3.3 arcmin/pix Yes
OMEA 3M Monochrome 2.9 Million pixels 3100 x 2100 pixels 180° x 180° 5.4 arcmin/pix Yes
OMEA 3C Color 2.9 Million pixels 3100 x 2100 pixels 180° x 180° 5.4 arcmin/pix Yes
OMEA 5M Monochrome 10.5 Million pixels 5500 x 3650 pixels 180° x 180° 3.0 arcmin/pix Yes
OMEA 5C Color 10.5 Million pixels 5500 x 3650 pixels 180° x 180° 3.0 arcmin/pix Yes
OMEA 8M Monochrome 8.8 Million pixels 4600 x 3520 pixels 180° x 180° 2.9 arcmin/pix Yes
OMEA 8C Color 8.8 Million pixels 4600 x 3520 pixels 180° x 180° 2.9 arcmin/pix

Yes

 

OMEA 3x/6x Camera (right side as square shape is temperature and moisture sensor)

OMEA 8x Camera (right side as square shape is temperature and moisture sensor)

All parts are made of anodized aluminium, water tight by o'rings seals, automatic dome heater located at dome's base allow to warm up the acrylic dome in order to remove frost and icing, to preserve good image quality.

OMEA water tight connectors : USB, POWER and External SENSOR

By default, all cameras model records two basic external weather parameters: relative humidity and external temperature.
Internal relative humidity and camera temperature are recorded.

WEATHER STATION OPTIONNAL MODULE

An optionnal module, attached to this camera, can be supplied to measure a wide range of weather parameters as :
• Wind speed
• Wind direction
• Pressure
plus relative external humidity and temperature.

SPECEFICATIONS

Parameter
Value

Field of view

180° x  130 ° (OMEA 6x)
180° x 180° (OMEA 3x, OMEA 5x and OMEA 8x)
Wavelength range : 350 to 750 nm (IR cut filter)

Factory focused and tilt tuned with respect to the whole image sensor field.

Camera resolution

3100 x 2100 (OMEA 3x & 6x) 2.4 µm pixel size (Rolling shutter)
4600 x  3500 (OMEA 8x) 3.8 µm pixel size (Rolling shutter)
5500 x  3600 (OMEA 5x) 2.4 µm pixel size (Rolling shutter)

All monochrome or color, progressive scan, anti-blooming sensor.

ADC resolution

14 bits for OMEA 3x and 6x, 12 bits for other cameras

Video stream


ALL Cameras have video stream capabilities

AVI file stream can be created


OMEA 8x & 5x  : 2.5 fps USB 2.0 - 15 fps USB 3.0

OMEA 3x & 6x  : 6.5 fps USB 2.0 - 30 fps USB 3.0
e is disabled for cooled camera !

Exposure time

From 32µs to one hour exposure (All-Sky mode, typically 20s to 75s)

Gain

Variable, Logarithmic mode from 30x to 10000x
Dome Acrilic dome
BK7 Glass optical dome : on request

Image download time

OMEA 8x & 5x : 400ms Max

OMEA 3x & 6x : 150 ms Max

Auto-iris

Only OMEA 8x, other models do not have this feature.
Remote re-focusing Only OMEA 8x, other models do not have this feature.
Image Sensor Cooling Only OMEA 8x and OMEA 5x have image sensor cooling capacity, other cameras do not have these features.

Control software

ALCOR SYSTEM's  All Sky software supplied at no additionnal costs.

Operating system

Windows 32&64 bits (Seven and 10)

Linux (contact us)  SDK available

To PC interface

USB 2.0 + 20 m length cable, perfectly full time reliable operation.  Ethernet link on request.


USB 3.0 + 15 m length cable, on request (this has added value only in video stream mode)

Top dome heater

Automatic dome defrost based on provided external temperature and humidity sensors.

User tunable heating power from 18W to 36W

Power supply

24V / 3A (Power supply provided)

Other informations

Enduring bad weather condtions (rain/snow), anodized aluminium casing, acrylic dome, water tight connectors  and body /  IP67 protection

Weight

3.5 kg , OMEA 8x is 4.5 kg

Dimensions

OMEA 8/5 : Ø130mm x 270 mm, other is Ø130mm x 210 mm height, three holes for mast attachment.

Operating temperature range

from -35°C to +45°C

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