M42 Composite Image from Indoors
Taken by James Roger Samworth on December 5, 2024 @
Nailstone, UK
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2024:12:09 23:06:34
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Details:
Many celestial objects have very bright cores with very tenuous outer parts. Typical examples being globular clusters such as M13 and, of course our old friend M42 in Orion. Many published images you see of these objects are composite exposures to try to retain detail in the cores while at the same time representing the dimmer outer parts. Here is a recent attempt at this with images acquired recently from my indoors window-sill. This one used 6 images, each one, in photographic language, one stop apart. The PD camera essentially acquires an image with a 20msec exposure and can then internally stack up to 1024 of these. The longest exposure used in this image was a stack of 100 images, each one comprising 512 of the 20msec images, making a total exposure of 1024 seconds.
Photographer's website:
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