Starlight Xpress OCULUS PRO COLOUR Manuel utilisateur
Oculus PRO Colour Handbook Issue 1
Handbook for the SX ‘Oculus PRO Colour’
High resolution All-Sky camera
Thank you for purchasing a Starlight Xpress ‘Oculus PRO Colour’ all sky camera. We hope that you will be
very pleased with the performance of this product. Please register your product and warranty at
https://forms.gle/tmsHEJfQG2bLJjr57 .
The Oculus PRO Colour is a high resolution, very compact wide-field camera. The camera and
internal dew heaters are powered through the 12V DC input and camera is controlled via a single
USB2.0 computer connection. The colour version is intended for full-sky monitoring of weather,
clouds, pollution etc. but can be used at night by opening the aperture of the lens. It will provide
high quality images, while operating unattended for long periods. The ‘megapixel’ resolution F/2
fish-eye lens provides horizon to horizon coverage with very little star image distortion across the
entire field.
The Oculus PRO Colour utilises a sensitive Sony CCD (the ICX825AQ) with an array of 1392 x 1040
pixels in a ‘2/3rd-inch’ format sensor. Although the chip is not cooled, it has a very low dark signal
and very little readout noise, so it can be used to image faint stars at night by opening up the lens
stop and extending the exposure times. The small pixel size and high resolution lens give excellent
definition and a good sized screen image format.
A strong polycarbonate hemispherical dome houses the lens assembly and this dome is easily
removed for cleaning, when necessary, a spare dome is also included with the Oculus PRO Colour. A
12v DC input socket provides power to the camera and the dew sensing circuitry which controls the
internal heating resistor to be to prevent dewing of the lens and dome on humid nights. The entire
assembly comes equipped with a standard tripod bracket for mounting.
Oculus PRO Colour Handbook Issue 1
The Oculus PRO Colour specification:
•
CCD type: ICX825AQ Sony ExView II CCD with low dark current and vertical anti-blooming.
•
CCD Full resolution pixel data: Pixel size: 6.45uM x 6.45uM, Image format: 1392 x 1040
pixels
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CCD Image area: 8.98mm (Horizontal) x 6.71mm (Vertical).
•
CCD quality: Grade 1
•
Spectral Response: QE max at 580nM (~75%), 50% at 400nM and 770nM.
•
Readout Noise: Typically only 3.5 electrons.
•
Full-well capacity: Greater than 23,000 e- (unbinned)
•
Anti-blooming: Overload margin greater than 1000x.
•
Dark current: Less than 0.1 electrons/second @ + 10C ambient.
•
Data format: 16 bits.
•
System gain: 0.3 electrons per ADU
•
Lens details: 2.5mm FL F/1.2 150 degree ‘Fish Eye’ or 1.55mm FL F/2 180 degree ‘Fish Eye’
•
Computer Interface: Built-in USB 2.0 compatible interface.
•
Image download time: Typically 0.6 seconds at full resolution using USB 2.0.
•
Power requirements: Camera & Dew Heater require 12v at 1 amp max.
•
Input connection: ‘Mini B’ USB socket for USB2.0 and a 2.1mm jack for +12v Camera &
Dew Heater supply.
•
Cooling system: Ambient air cooling.
•
Viewing dome: High quality polycarbonate hemisphere (replaceable)
•
Overall size: 150mm tall x 95mm diameter
Installing the Oculus PRO Colour:
Before connecting the Oculus PRO Colour to your computer, please install the appropriate drivers for
your operating system from the USB drive supplied with your camera.
The supplied USB stick contains all the drivers and software. To install the drivers:
1. Select the folder for your operating system (32bit or 64bit)
2. Double click on the “Install Drivers.exe”
3. Follow the prompts in the installer and click ‘Finish’ at the end of the install.
If you encounter any problems, read the README file on the USB drive or you can download the
latest drivers from our web page at https://www.sxccd.com/support/resources.
Oculus PRO Colour Handbook Issue 1
To install Starlight Live (‘Live-stacking’) software:
1. Double click on the Starlight Live folder on the USB drive.
2. Double click on the Setup.exe program
3. Follow the prompts to fully install the software on to your computer.
4. Plug in your Oculus PRO-Colour (Ultrastar-C) camera – (Wait for the Install New Hardware
Wizard to complete)
5. Double click on the Starlight Live.exe icon on your Desktop or from your START button on
your computer.
The Oculus PRO Colour (Ultrastar-C) control software is UltrastarC.exe. To install this:
1. Double click on the Oculus PRO Colour (Ultrastar-C) Software folder on the USB drive. 2.
Double click on the Setup.exe program
3. Follow the prompts to fully install the software on to your computer.
4. Plug in your Oculus PRO Colour Camera (Ultrastar-C camera) – (Wait for the Install New
Hardware Wizard to complete)
5. Double click on the UltrastarC.exe icon on your Desktop or from your START button on your
computer.
6. The first time you use the software, click on “File” then “Set Program Defaults” You will get a
message, “Warning – No INI File found – Please set defaults”
7. Click “OK” – The Set Program Defaults box will appear.
9. Click on “Save Changes” and you are all set to start using the camera. (The INI file that was
being asked for initially has now been created and you will no longer see the Warning message)
Other 3rd party software packages such as AstroArt, MaximDL, SkyX and others, all support the
Oculus PRO Colour (Ultrastar-C) either with native drivers or through ASCOM. Our latest driver
can be found on our website: https://www.sxccd.com/drivers-downloads
Setting up and using the Oculus PRO Colour:
The best site for your Oculus PRO Colour camera will depend to a great degree on your surroundings
and nearby sources of artificial light. An all-sky lens will image everything in your area and the
reflections of artificial lights in the dome and lens can be objectionable. Try to locate it in a
shadowed area with as good a view of the sky as possible. If you cannot avoid stray light getting into
the field of view, then raising the effective horizon is an option.
Oculus PRO Colour Handbook Issue 1
Mounting the camera assembly is usually done by using the ¼ Whitworth tripod screw hole in the
attached bracket. A camera tripod will provide an adequate mounting for temporary use, or a
suitable mast and fixing screw can be erected to permanently mount the Oculus PRO Colour several
feet above the ground. It is wise to mount the unit as high as possible, so that the effects of low-
hanging fog and dew are reduced, and stray light is minimised. It is also helpful if the camera is
positioned above a source of warmth, such as a house roof, to help keep the dew at bay.
The minimum setup requires the USB cable to the monitoring computer as well as the 12V DC
supply. This should be as short as is practical, but it will probably be necessary to have a fairly long
lead if the Oculus PRO Colour is mounted high on a mast or roof. As the camera power is taken from
the 12V supply, any long leads should be as heavy as possible to reduce the internal resistance. The
USB2.0 cable should be kept to a minimum and if an extension is required, a high quality USB active
extension cable should be used.
Depending on your setup, there is a possibility of earth loops due to the internal dew heaters
switching on and off. This may cause the USB communication side to be a little problematic and as
such, we have included a ferrite core which can be fitted to the USB cable to eradicate this affect. It
is very simple to install, simply wind the USB cable around the ferrite core. We recommend at least 3
time, but 4-6 times is best as shown. It is best to do this at the computer end as this will put less
pressure on the USB connector in the camera, prolonging the life of the camera.
Oculus PRO Colour Handbook Issue 1
The Oculus PRO Colour is designed to minimise any lens and dome dewing problems, but these are
very common in optical systems that are cooled by radiation to the sky. It is very likely that you will
have dewing on humid nights unless the dome is kept warm by powering the internal heater via the
12v socket on the rear of the assembly. This socket can accept a 2.1mm coaxial power plug from any
12v DC supply capable of driving at least 1 amp - the polarity is center positive. Heating will increase
the dark signal of the camera, so the dew sensing circuit is set to approximately 50% moisture
saturation in the air before turning on the dew heaters automatically.
A rear view of the Oculus PRO Colour, showing the heater socket and USB cable.
Oculus PRO Colour Handbook Issue 1
Imaging with the Oculus PRO Colour Camera:
The software ‘Starlight Live’, makes Live Viewing very easy and is highly recommended.
Starlight Live recognises the Oculus PRO Colour (as an Ultrastar-C) automatically and all that
you need to do is to open the software, select a suitable exposure time, typically 1 second, and
click on the “Play” button. Follow the steps below:
• Start the Starlight Live Program by clicking on the icon. !
• Deselect the “Auto Align” button in the “Channel Selection” !
• Select the “Image Export Tab” on the left-hand side and then click on “Export Raw
Images” At this point you will need to select the directory where you would like the
images saved. !
• Select the “Stacking Tab” on the left-hand side and ensure that “Enable Stacking” is not
checked. !
• Select the “Exposure Control Tab” on the left-hand side of the screen. !
Oculus PRO Colour Handbook Issue 1
The Camera Properties will show that the Starlight Xpress Ultrastar-C camera is
connected and ready to go. This camera is the one inside your Oculus-C. !
• Select the Colour Space to RGGB which is the correct decoding for your camera. !
• Ensure Binning is set to 1x1 !
• Adjust the exposure time, I would suggest 1 second is a good starting point for day light
images. !
•!
Click on the Play icon to start the camera exposing and the Stop button to stop the camera
exposing.
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Select the “Display Processing Tab” This allows you to adjust the Black Level and White Level of
the image and also any colour offsets that you require using the sliders.
The AllSkEye software which is freely available at https://allskeye.com is fantastic software
for use with the Oculus PRO Colour camera. It has so many amazing features and the PRO
version of the software is very inexpensive.
At Starlight Xpress, we would highly recommend trying the AllSkEye software!
Oculus PRO Colour Handbook Issue 1
The Starlight Xpress Oculus software was designed with the monochrome Oculus in mind. It
will work with the Oculus PRO Colour, however, the images will be in raw monochrome
format and will need to be manually colour synthesized to extract the colour data.
Imaging with the Starlight Xpress software
With the Oculus PRO Colour connected to the PC, open ‘Oculus PRO Colour_USB.exe’ and find the
‘Set program defaults’ menu under the ‘File’ heading. If this is the first run of the software, you will
get a warning about the ‘ini file not found’, but ignore this and click on OK – then open ‘set program
defaults’ from the text icon . You should now see a screen similar to the one shown below:
The defaults shown above are a typical example, but you can change the settings to suit your
preferences. The main thing to do is to set up the address of the ‘Autosave’ folder, so that your
images will be saved to a defined location. The ‘Ignore VID/PID’ MUST be selected for the software
to recognise your Oculus PRO Colour camera. Once the defaults have been set to values which you
think will be approximately correct, save the settings and open the camera interface by pressing the
camera icon in the top menu. You will see something like this:
Oculus PRO Colour Handbook Issue 1
If this is an initial setting up session, set the ‘Autosave’ to off and select ‘Continuous’ mode. The
exposure time for a dark sky can be 20 seconds, or more, but for initial alignment and testing, set 5
seconds and press ‘Take Photo(s)’. You should see a sequence of images on the display and you can
experiment with the Oculus PRO Colour orientation and location to get the best views. The focus
should be good, as supplied, but if necessary it may be adjusted by unscrewing the large outer ring
and lifting off the dome. Loosen the small lock screw on the lens and gently rotate the top lens ring
to refine the focus.
Re-lock the lens when satisfactory and replace the dome.
You can greatly improve the image brightness and contrast by setting up the ‘Max palette stretch’
option in the ‘View’ menu. I recommend using the ‘Linear’ stretch and adjusting the black and white
levels for the best view.
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