JTW Astronomy - Tutorials:

Astronomy Tutorials

Astronomy / October 4, 2017

Buying your first telescope is probably going to be your most difficult decision as an amateur astronomer. This tutorial gives a quick run down of the basic types of telescope and their strengths and weaknesses.

With so many stars in the sky, how can we locate a star, find it again, or tell other people where it is located? This article presents several coordinate systems used by astronomers to describe positions of celestial objects.

Webcams are without doubt the cheapest option for entry into astrophotography, but they are very temperamental and do not really respond well to traditional imaging. This tutorial provides you with the basic information on the use of these cameras for astophotography.

In an RGB image, exposures through red, green, and blue filters are combined to create a color image. This works because the human eye sees color as a combination of these three primary colors. Combining a high-resolution black-and-white image with low-resolution color images will yield a high-resolution color image, because we don't get the resolution data from the color images. This article introduces an LRGB imaging technique that allows you to combine a deeper black-and-white image with a color RGB image to bring out more detail than the RGB would have alone.

Source: www.jtwastronomy.com