Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  NGC 4627  ·  NGC 4631  ·  NGC 4656  ·  NGC 4657  ·  Whale Galaxy
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The Whale and the Hockey Stick galaxies, Wim van Berlo
The Whale and the Hockey Stick galaxies
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The Whale and the Hockey Stick galaxies

Getting plate-solving status, please wait...
The Whale and the Hockey Stick galaxies, Wim van Berlo
The Whale and the Hockey Stick galaxies
Powered byPixInsight

The Whale and the Hockey Stick galaxies

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Description

I collected the data for this image during the last four nights. During spring we usually have clear nights, but this year much less than previous years. Nights are also getting shorter and shorter, and next week we won't have astro darkness anymore. As it is, I hade to collect the colour data and the H-alpha before and after astro darkness each night. But even while I could collect luminance during each night's darkest hours, the background in the subs were lighter than should be. Perhaps thin high clouds?

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The Whale and the Hockey Stick galaxies, Wim van Berlo