Deep Sky Imaging Basics: Understanding ISO, Aperture, and Exposure Time
Mastering the exposure triangle—ISO, aperture, and exposure time—is key to perfect deep-sky images. Learn to balance the three key settings for astrophotography success.
Alexander Curry is a professional astrophotographer, Co-Founder of Telescope Live and Fellow of the Royal Astronomical Society. Alex has been fascinated by space since he was a child.
“In 2010 I became hooked when my father bought an 8” SCT; starting with just looking at the planets and eventually on one clear night (which are rare in the UK) attaching a DSLR and experimenting imaging the brightest images in the night sky. I have been fortunate enough to present to many universities, societies and colleagues worldwide and been fortunate enough to have a few images of my own published in various magazines.”
Mastering the exposure triangle—ISO, aperture, and exposure time—is key to perfect deep-sky images. Learn to balance the three key settings for astrophotography success.
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