Cosmic Keyhole (NGC 1999) and surroundings (Massimo Di Fusco)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: HD36920 · HD37001 · HD37091 · HD37131 · HD37210 · HD37236 · HD37304 · HD37357 · HD37372 · HD37373 · HD37399 · HD37412 · LBN 979 · LDN 1641 · NGC 1999

Image of the day 12/27/2023

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Cosmic Keyhole (NGC 1999) and surroundings

Link: https://astrotrex.wordpress.com/2023/12/01/shara6-closed-ngc1999-the-cosmic-key-hole/

Image of the day 12/27/2023

Powered byPixInsight

Cosmic Keyhole (NGC 1999) and surroundings

Link: https://astrotrex.wordpress.com/2023/12/01/shara6-closed-ngc1999-the-cosmic-key-hole/

The ShaRA team, for the sixth project, landed in a much photographed area of the sky: Orion. Just south of the famous M42, there is a beautiful reflection nebula called the Keyhole (NGC 1999), imaged with the Chilean T3 of half a meter in diameter.
NGC 1999 is a reflection nebula with a vast hole of empty space at the center (the keyhole, in fact) and surrounded by a vast region of ionized hydrogen. The reflection nebula shines with the light of the variable star V380 Orionis.
In addition to this dark nebula, the reflection nebula and the vast H-alpha zone, the region is wonderful to image with long focal length telescopes also because it is rich in Herbig-Haro (HH) objects. HH objects are nebulae with very weak emission, visible in star formation zones, formed thanks to ionized gas, expelled in the form of plasma jets from the poles of forming stars, which colliding at supersonic speeds with dense zones of gas and dust excite the atoms, making them luminous due to the triboluminescence effect.

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Status	Advanced success
Started	...
Astrometry.net job	8913743
PixInsight job	RVKIX71VBHTBP9H5EZYZBUTALS08FZFS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h36m29s.936
RA (top/left)	05h38m32s.688
RA (top/right)	05h34m30s.174
RA (bottom/right)	05h34m26s.689
RA (bottom/left)	05h38m29s.679

Dec (center)	-06°44′21″.88
Dec (top/left)	-06°14′38″.23
Dec (top/right)	-06°13′47″.16
Dec (bottom/right)	-07°14′03″.90
Dec (bottom/left)	-07°14′52″.51

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Image of the day 12/27/2023

Cosmic Keyhole (NGC 1999) and surroundings

Image of the day 12/27/2023

Cosmic Keyhole (NGC 1999) and surroundings

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Image of the day 12/27/2023

Cosmic Keyhole (NGC 1999) and surroundings

Image of the day 12/27/2023

Cosmic Keyhole (NGC 1999) and surroundings

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