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 19, 2019 | Uncategorized
This is about manual focusing using those opposable thumbs and is aimed at the beginner. To focus manually, you need a reasonably fast frame rate so you can see the effect of turning the focuser knob on the screen. The problem is that stars can become quite faint at...
by admin | Aug 12, 2019 | Instructions and Howto
What is noise in an image? Noise is a variation in brightness or colour in an image which is not really present in the object being imaged but is an artefact of the camera sensor and electronics. Noise appears as small coloured dots appearing in a colour image, 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 | Aug 12, 2019 | Instructions and Howto
The Batch Record Menu in Options > Preferences > Batch Record is designed to help you make video sequences easily and automatically. Here’s a quick tutorial to show you how the following video sequence was made. The sun was filmed with a Hydrogen Alpha filter,...
