You can, to some extent by removing the IR filter from the imager. It's a tricky thing to do if you're not skilled and could cause more damage to the camera than it's worth, so I wouldn't advise it. Why the IR filter? That's because most cameras can `see' in the infra red range when the filter's removed and that equates to having `heat vision', although it's not really a true night vision unit. A night vision unit uses an image amplifier design and works on an entirely different principle.
No, the canon powershot does not come with a nightvision mode. Inclusion of infrared and, quite expectedly, thermal vision is both cost and size prohibitive for a standard consumer-level device.
Yes one can purchase night vision camera online at eBay. eBay sells night vision security cameras, webcams and indoor and outdoor night vision cameras.
Vivatar makes a really good night vision camera. You can find good prices for Vivatar cameras on amazon.
The color light that is optimal for enhancing the performance of a night vision camera is infrared light.
infraredness
You can purchase a night vision ccd camera for under $300 and with free shipping at www.ebay.com. Visit this link for their listings; http://shop.ebay.com/?_from=R40&_trksid=p5197.m570.l1313&_nkw=night+vision+camera&_sacat=See-All-Categories.
Not exactly my specialty there, but I will say that night vision would probably pick up a camera, but it could easily be confused with other things like heating ducts.
Night vision in dash camera allows drivers to capture clear, detailed footage even when lighting is minimal or absent. Whether you’re driving on poorly lit roads, through tunnels, or on highways, a dash camera with robust night vision is indispensable
Usually, the only way to see a real ghost is to use a digital camera, a static night vision camera, or a thermal imaging camera. 99% of the time you can't see a real ghost with your eyes. Many say ghosts will never be seen as they do not exist.
Some stores that sell great night vision camera are the Kodak stores and also small mom and pop stores that specialize in selling camera equipment for professionals. They can get quite expensive.
High end electronics stores have night vision functions on their cameras. Night vision is usually found on most camcorders, as well. It would not take aesthetically pleasing pictures, however.
You can purchase digital night vision goggles in hunting stores and sometimes in gun shops. If all else fails you can shop online for them, Amazon and eBay should be your first start.