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Thread: Xbox live vision camera

  1. #11
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    Quote Originally Posted by admin View Post
    Hey I agree, we can start a database with models and then go from there. I am actually setting up a review area for scopes, binos, and imagers.

    I want to add webcams to that and have people post whether their settings, and photos for each cam +/- mods. What do you think?
    Great idea, this may come in handy also.

    WEB-CAMERAS

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  3. #12
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    Instead of starting another thread. I'll just add on to this one. lol

    I boxed the live vision web camera. After getting a Philips SPC900NC.

    So last night I disassembled the webcam, and installed in my fan cooled box. here is my final project for a while. I may improve it some, with a on/off switch and an internal power connection. Or I may go to radio shack one day and get a new box for it all to fit in. But that will be a while off. I'm happy with this for now.

    Figureing out the setting for this one is now my only concern. Any body with a spc900nc out there do you have any baseline setting for planets?
    Attached Images Attached Images

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    I re-worked my x-box live vision web camera. I added a on/off switch, and a power jack for wall power supply to run the fan. I may experiment with running the fan off the USB hot/ground on the next webcam I get hold of. And I plan to order a couple Project Boxs, little black boxs for installing eletronics or what ever. They can be had in various sizes. Also I plan to order a few micro fans 20mm X 20mm X 10mm and install both in side of the project box, along with a on/off switch, and run it all off the USB, along with the webcam. And of course order a couple 1.25 webcam adapters.

    Astronomy Forums | Telescope Forums & Reviews | Astronomy Community - NCAstronut's Album: Imaging Equipment - Picture

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    Default Philips SPC900NC Technical Specifications

    Philips SPC900NC Technical Specifications That I located, while looking for the magnification when useing this webcam with my telescope. The Formula is at the very bottom.
    Sensor: CCD Sensor resolution: VGA

    Max. (interpolated) photo resolution 1,2 MP (1280 x 960)
    Max. (real) photo resolution VGA (640x480)
    Max. video resolution VGA (640x480)
    Max. frame rate: 90 fps (Some e-shop sites claim that this webcam is USB2.0 and capable of 90fps, but when I see the screen shots from the drivers interface, I see 640x480@15fps is the maximum). Lens: F2.2, D55° White balance: 2600 – 7600 k Min. illuminance: < 1 lux Color depth: 24 bit
    sensitive and has been tried by other astonomers. The Toucam Pro I and II models were the original favourite choice for astronomers.
    The SPC900NC uses the same Sony ICX098QB CCD sensor as the Toucam Pro's with a pixel size of 5.6 x 5.6 microns (=0.0056mm), which allows a high resolution (320x240 Pixels non interpolated). This table shows the chip is a 1/4" Type which has 659 pixels horizontal x 494 pixels vertical, in a 14-pin Plastic DIP package with a CXD2450R Combined timing pulse generator, and a primary colour mosaic filter mounted.
    The Sony ICX098QB CCD sensor is a 1/4" type with details as below:-

    Type Aspect Ratio Width
    mm Height
    mm Diagonal
    mm Area
    mm2 Relative Area
    1/4" 4:3 3.200 2.400 4.000 7.680 1.930

    Magnifaction of Telescope Apex 90mm with Philips SPC900NC Webcam:
    crop factor for Philips SPC900NC is 10.8
    ( 35mm diagonal/sensor diagonal = 43.3/4 = 10.8 )
    35mm equivalent telescope focal length when using spc900nc
    ( 1250mm focal length * 10.8 = 13500mm )
    magnification calculation (divide by 50mm) is 270x
    ( 13500mm/50mm = 270x )
    Magnifaction of Telescope Apex 90mm with DSLR Canon EOS 350D:
    crop factor for Canon APS-C sensor is 1.6
    ( 43.3/26.7 = 1.6 )
    35mm equivalent telescope focal length when using Canon EOS 350D
    ( 1250mm focal length * 1.6 = 2000mm )
    magnification calculation (divide by 50mm) is 40x
    ( 2000mm/50mm = 40x )
    Common crop factor:
    35mm film = Diagonal (43.3mm) = 36 x 24 mm ( Crop factor 1 ), 3:2 aspect ratio
    DSLR with Canon APS-C sensor = Diagonal (26.7) = 22.2 x 14.8 mm ( Crop factor 1.6), 3:2 aspect ratio
    eg crop factor calculation = 43.3/26.7 = 1.6
    Typical compact digital camera = 1/2.5″= 5.76 x 4.29 mm ( Crop factor 6.02 ), 4:3 aspect ratio
    Common camera phone/ webcams/ digital camcorders = 1/6″ = 2.40 x 1.80 mm ( Crop factor 14.14 )
    SPC900NC webcam = 35mm diagonal/webcam sensor diagonal = 43.3/4 ( Crop factor 10.8)

    SPC900NC Telescope Magnifaction
    Telescope Focal Length X 10.8 ÷ 50, should give you the magnification from what I gather.
    Last edited by NCAstronut; 08-10-2010 at 06:52 PM.

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    Default hello

    Hey, do you have any of the technical specs on the XBox 360 live vision webcam that you have for the Philips SPC900NC?

    I was also wondering what motivated you to move to the Philips SPC900NC.

    Thanks

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    I have been following your project and must say that I am impressed with what you have done, great job!

    Jim!

    Quote Originally Posted by NCAstronut View Post
    I re-worked my x-box live vision web camera. I added a on/off switch, and a power jack for wall power supply to run the fan. I may experiment with running the fan off the USB hot/ground on the next webcam I get hold of. And I plan to order a couple Project Boxs, little black boxs for installing eletronics or what ever. They can be had in various sizes. Also I plan to order a few micro fans 20mm X 20mm X 10mm and install both in side of the project box, along with a on/off switch, and run it all off the USB, along with the webcam. And of course order a couple 1.25 webcam adapters.

    Astronomy Forums | Telescope Forums & Reviews | Astronomy Community - NCAstronut's Album: Imaging Equipment - Picture

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    I found a xbox camera at my local ebgames, It's in good hands now.

    I've played around a little bit wxAstro Capture, and the noise is quite a problem. First order is to open it, good hands I say, and install some kind of cooling. Any suggestions on taking this apart without breaking everything inside?

    I wonder what mods I could do. I don't know the exact capabilities software has over this camera, I don't know exactly how to take stills using wxastrocapture, So I'll start with looking around for some camera software.

    This should be good fun
    Kson ⌀135mm/F5.9, EQ5 GotoNova, 23mm+12.5mm eyepieces
    Surrey, BC

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    I had a chance to play around with the camera today, and managed to deconstruct the camera to it's basics. I made a hack job of the actual case, which ended up with working PCB and a dying usb cable. This would be the first time I've ever played with a CCD (or is it CMOS?), I had no idea how warm these sensors get, the PCB is probably the worse heatsink, and somehow that needs to be replaced.

    I found the actual CCD behind the IR filter (which I removed), it's a very small sensor, and there is no way I could remove it to directly couple it to a cooler, so I wont be bothering with thermoelectric coolers. I will however use a old CPU cooler and couple it onto the chips at the back of the PCB, they seem to be much more conductive of heat and tend to heat up faster when in use. although, this will require I remove the USB header and solder the wire directly onto the board and cut away at some of the metal to make way for the high surface mount parts.

    So far, so good
    Kson ⌀135mm/F5.9, EQ5 GotoNova, 23mm+12.5mm eyepieces
    Surrey, BC

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    I tried this and managed to get some pretty good images with a 114lcm. On the fly I grabbed an Xbox cam from GameStop for $15. I did pop off the green led mounted on the camera board. On the quick I reattached the housing and super glued it to an old .98" Barlow lens housing. This of course made for off center and hard to track videos but the quality was ok. Anyone know if the 1.25" to 12mm adapter would work?

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    This has been very helpful. I'm going to go try it out tonight and see if I have any luck.

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