Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Extremely wide field
Sharpless 171 / NGC  7822 (H-alpha), Rob
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Sharpless 171 / NGC 7822 (H-alpha)

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)
Sharpless 171 / NGC  7822 (H-alpha), Rob
Powered byPixInsight

Sharpless 171 / NGC 7822 (H-alpha)

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

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Description

The star-forming region NGC 7822 in Cepheus. In this monochrome Hydrogen image you can better see the dark, dense areas where one day stars will be formed. Some of the stars which began fusion just a few million years ago are now energising parts of this region and lighting it up. Kind of looks like a question mark.

Includes the emission region Sharpless 171, and a young star cluster Berkeley 59.

LRGB and H-alpha images created using PixInsight (for calibration, registration, integration) and Adobe Lightroom (for cosmetic adjustments). 300s exposures (63xL, 54xR, 36xG, 34xB, 53xH). Captured in New Mexico at Deep Sky West, using a QSI WSG-5 CCD Camera and a 135mm f/2 Rokinon lens.

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Sharpless 171 / NGC  7822 (H-alpha), Rob