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Old 15-07-2016, 01:48 PM
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sil (Steve)
Not even a speck of dust

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Join Date: Jun 2012
Location: Canberra
Posts: 1,474
Just to add a bit more information for anyone else interested in astrophotography. People are used to a camera being something you point at something press a button and get a picture you can post to facebook or whatever. Astrophotos you see are rarely that simple even if using a DSLR. You take photos as you'd expect but you usually take a lot of them then align and stack them into a single image. This reduces noise from having to take longer exposures and gives you more photon data to show faint objects in better detail. Its a bit more work than just "press the button".

You also don't need a telescope to do astrophotopraphy. After all a telescope and a camera lens are essentially the same (a series of optical elements designed to capture photons entering the front and focusing them down to a region where a sensor or your eye is waiting to receive them. The differences between them effect the potential quality of the image you get: A longer optical path (focal length) gives you a greater magnification, a wider optical path (aperture; tube entrance) gives you a larger capture area (bigger light bucket) to help you capture fainter objects easier. If you want to get into astrophotography you can do it with whatever cameras you have already, you just will be limited to the constraints of the aperture and zoom and how good the camera sensor is. A tripod is essential, a tracking mount and tripod desirable, there are options.
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