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Filters, and what are high-speed filters? Filters are great for astrophotography. They work by blocking out colours (that is, frequencies of light) that you don’t want. The images you get when you use a filter are made up of the frequencies they let through. Filters can’t, of course, enhance or amplify any frequencies, but by…

Getting deep images of the Milky Way can take a lot of power from your DSLR’s battery. Using a dummy battery to power your camera means you can leave it running all night and you won’t have to change batteries. You power the dummy battery with a PegasusAstro DSLR Buddy, and that means you can also run a dew heater strap from the mains, or a big battery.

Remember those horrible prickles in summer lawns? They’re often caused by Bindii, which have vicious spikes that stick a seed to your foot. The plant spreads itself using you as transport. Bill took a macrophoto of the Bindii using a WeMacro Rail and a reversed lens. You can see how nasty this creature is.