Exploring Nebulae: A Study of Exposure Techniques with Different Filters

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Discover the fascinating world of astrophotography as we delve into exploring the Rosette Nebula (NGC2237) and supernova remnants, including IC443 and SH2-240. Using the AREO system, we analyze results from exposure times of 20, 60, 120, and 300 seconds with various filters—Hydrogen Alpha, Red, Green, and Blue. What can we achieve in just 30 seconds, 2 minutes, or even 5 minutes? Join us as we experiment with these settings to enhance our understanding of stunning celestial objects.

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May 09, 2026

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Exploring Nebulae: A Study of Exposure Techniques with Different Filters

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H Alpha Red 20 seconds exposure – 4 different filters Green Blue AREO 3
3 different exposure times Hydrogen Alpha filter 20, 60 and 120 seconds
What can I achieve in 30 seconds? 4 filters Rosette Nebula – NGC2237 30 seconds each exposure AREO3 H Alpha Red Green Blue
What can I achieve in 2 minutes? IC443 - SUPERNOVA REMNANT IN GEMINI AREO 3 – 120 seconds exposure using Hydrogen Alpha filter
What can I achieve in 5 minutes? SH2-240 – Supernova Remnant in Taurus AREO 3 – 300 seconds exposure using Hydrogen Alpha filter