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Canon Camera Control

Canon cameras can be controlled via the use of software such as APT (Recommended), Backyard EOS (Recommended), DSLR Focus, MaxDSLR (from Diffraction Limited, the makers of MaxIm DL), ImagesPlus and DSLR Control with the use of a computer control cable.

Serial cables can be connected to a PC/ laptop/ tablet with no serial ports using a USB to Serial converter. See the USB/ Serial/ Parallel Converters page.

N3 cameras, the 5D, 10D, 20D, 30D, 40D and 50D can use these cables in combination with a converted N3 type remote. astronomiser can convert your N3 remote or we stock simple remotes with the cable adapted to allow you to connect cables and accessories meant for the 300D, 350D or 400D.

Serial Control

Modified N3 Remote Control

N3 Remote Control Conversion


Serial Control...

3m, 6m or 10m serial shutter control cable for Canon EOS dSLR Cameras

This cable allows your PC to control the shutter function of your camera.

In the D9 serial plug a small circuit uses a high CTR opto-isolator to electrically isolate your camera from your computer. This is important to stop noise transfer from your PC (and other equipment connected to it) to your camera.

Other alternatives (using a switching transistor) are available but these DO NOT isolate your camera from computer noise etc.

This cable should be used in conjunction with a USB cable (supplied with the camera, although you will probably wish to extend this - see note below) to use with software such as:

The cable is made with either 3m, 6m or 10m of lightweight shielded audio quality flex. On the PC end a tough ABS D9 plug enclosure is used and a plastic covered stereo jack with cable strain relief at the camera end. The lightweight cable is used for this flex to reduce drag on the camera (which may effect a telescope's tracking in equatorial mode) and the amount of weight on the end of the scope being used for the shot, meaning that overall balance of the system is affected to a lesser degree.

In later models (450D, 500D, 550D, 1000D) the shutter can be fired for exposures over 30 seconds by using the supplied USB cable though some users still prefer to use a dedicated shutter release cable as you can use mirror lock without activating the 'live view' mode which creates thermal noise in images.

The majority of Canon EOS dSLR cameras have a 2.5mm stereo jack remote socket (at time of writing this includes 450D, 500D, 550D, 600D, 650D, 700D, 750D, 760D, 1000D, 1100D, 1200D) but some will need a modified N3 controller to use these cables (20D, 30D, 40D, 50D, 60D, 60Da, 70D, 5D, 6D, 7D) - see Modified N3 Remote Control and N3 Remote Control Conversion below.


Canon EOS dSLR to Serial Converter (3m, optoisolated) AST300DS3M £17.95
Canon EOS dSLR to Serial Converter (6m, optoisolated) AST300DS6M £19.95
Canon EOS dSLR to Serial Converter (10m, optoisolated) AST300DS10M £21.95
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Modified N3 Remote...

Camera remote, 2.5mm Stereo and N3

The N3 to 2.5mm inline stereo socket end can be connected to Canon N3 camera input on the Canon 5D, 10D, 20D, 30D or 40D - this can then be used with any cable supplied with a standard 2.5mm stereo plug i.e., any cable or accessory made for the Canon 300D, 350D, 400D, including the astronomiser serial control cables for Canon 300D/ 350D and 400D dSLR Cameras, above.


Camera remote, 2.5mm Stereo and N3 ASTN3R £19.95
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Adapting N3 Controllers...

If you own a Canon camera that has a N3 connector (i.e., 10D and 20D) for shutter/ AF control I can adapt a N3 remote control such as the TC80-N3 to be used with the serial shutter release cables above. This involves cutting the connecting cable close to the camera body and adding a male and female 2.5mm stereo jack in-line. After this is completed, the N3 remote can either be used as normal or in conjunction with the above serial cables.

Alternatively, this modification will allow you to use the N3 type controllers such as the TC80-N3 with the 300D/ 350D and 400D models giving you the ability to take a series of timed exposures without the need for a computer.

The charge for this is 11.95 + P&P at 10%. Your remote will be returned by 1st class post insured to a maximum of 34 - astronomiser will accept no further responsibility for loss or damage of your remote than this level of compensation. I am happy to return your remote by Special delivery, the extra charge is 6 and your item will be insured for it's full value - please see the purchasing options below.

Once you have ordered and paid for this service, please send your N3 remote to the address listed on the Contact page.


N3 Remote Control Conversion ASTN3C £11.95
N3 Remote Control Conversion with fully insured Special Delivery return postage ASTN3C £17.95
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