Tag Archives: filters

NGC 7635 Bubble Nebula – Bi Colour Palette

NGC 7635 Bubble Nebula - Bi Colour Palette

Last night was the first clear night for a couple of weeks so, despite it being full moon, I decided to set up and have a go at some narrowband imaging. I selected NGC 7635 – Bubble Nebula – as … Continue reading

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What is narrow band imaging?

Narrow band imaging refers to imaging using filters that only let through a very narrow range of the light spectrum, often 0.07nm or less. They effectively block all other light frequencies. The spectral width of these filters therefore blocks out … Continue reading

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