by admin | Oct 1, 2019 | Imaging concepts
In essence CMOS sensors convert light falling on them in to numbers representing brightness levels, and their location on a grid of tiny little detectors called pixels. Each step in a “unit” of brightness on a pixel is expressed as a positive number. The...
by admin | Aug 22, 2019 | Imaging concepts
This article is aimed at the new owner of a modern F8 or faster ED Doublet or triplet refractor who wants to star-test it, and has already read a little about star-testing online. They are surprised to discover that the star-test looks nothing like the text-books or...
by admin | Aug 12, 2019 | Imaging concepts
When using a colour Altair camera in SharpCap or Altair Capture, you will have some colour space options to choose from. This blog outlines the various choices of colour space and their pros and cons. You select the colour space mode like this: 1) in AltairCapture...
by admin | Jul 19, 2019 | Imaging concepts
Q: My Altair camera has 8bit or higher bit depth options. Which should I choose and when? A: First we need to explain what bit depth is when it comes to imaging. Your computer uses ones and zeros to represent information – a bit. In the case of an image with a bit...
by admin | Jul 19, 2019 | Imaging concepts
This blog outlines the differences between the various still and video file formats available with your Altair CMOS camera when using AltairCapture or SharpCap and other capture applications which support video. Still image file formats (1 image frame per file): The...
by admin | Jul 19, 2019 | Imaging concepts
What is Binning? “Binning” is when you combine the signal from adjacent pixels in a camera, which reduces the resolution of the image. For example 2×2 averaging binning combines 4 pixels into one “virtual pixel” which contains the average...
