Applying this equation to the signal-to-noise ratio at the nebula brightness level for the combined image from the dark-sky site in the previous section, we calculate the loss in signal-to-noise ratio caused by flat-fielding:

This example demonstrates that the loss of image quality caused by the division in a well-made flat-frame is negligible.

Section 2.6: A Little Sermon on Signals and Noise

Was this article helpful?

0 0
Telescopes Mastery

Telescopes Mastery

Through this ebook, you are going to learn what you will need to know all about the telescopes that can provide a fun and rewarding hobby for you and your family!

Get My Free Ebook

Post a comment