A Cosmic Bat in Flight
Credit: ESO
ESO’s Very Large Telescope (VLT has caught a glimpse of an ethereal nebula hidden away in the darkest corners of the constellation of Orion (The Hunter) — NGC 1788, nicknamed the Cosmic Bat. This bat-shaped reflection nebula doesn’t emit light — instead it is illuminated by a cluster of young stars in its core, only dimly visible through the clouds of dust. Scientific instruments have come a long way since NGC 1788 was first described, and this image taken by the VLT is the most detailed portrait of this nebula ever taken.
Even though this ghostly nebula in Orion appears to be isolated from other cosmic objects, astronomers believe that it was shaped by powerful [stellar winds] – from the massive stars beyond it. These streams of scorching plasma are thrown from a star’s upper atmosphere at incredible speeds, shaping the clouds secluding the Cosmic Bat’s nascent stars.
Credit: ESO
This video pans across NGC 1788. Hidden in one of the darkest corners of the Orion constellation, this Cosmic Bat is spreading its hazy wings through interstellar space two thousand light-years away.
Credit: ESO. Music: Mat Javis — The Shape of Things to Come.
ESO is celebrating the twentieth anniversary of one of the VLT’s most versatile instruments, the FOcal Reducer and low dispersion Spectrograph – FORS2. FORS2 — which was originally accompanied by its twin FORS1 — is an instrument mounted on one of the VLT’s 8.2-metre Unit Telescopes at Paranal. Its ability to image large areas of the sky in exceptional detail has made it a coveted member of ESO’s fleet of cutting-edge scientific instruments. Since its first light twenty years ago, FORS2 has become known as “the Swiss army knife of instruments”. This moniker originates from its uniquely broad set of functions. FORS2’s versatility extends beyond purely scientific uses — its ability to capture beautiful high-quality images makes it a particularly useful tool for public outreach.
Credit: ESO
This chart shows the location of the reflection nebula NGC 1788 in the constellation of Orion (The Hunter). The map includes most of the stars visible to the unaided eye under good conditions, and the region of sky shown in this image is indicated.
Credit: ESO, IAU and Sky & Telescope
[1] In 1864 John Herschel published the General Catalogue of Nebulae and Clusters, which built on extensive catalogues and contained entries for more than five thousand intriguing deep-sky objects. Twenty-four years later, this catalogue was expanded by John Louis Emil Dreyer and published as the New General Catalogue of Nebulae and Clusters of Stars (NGC), a comprehensive collection of stunning deep-sky objects.
[2] In addition to being able to image large areas of the sky with precision, FORS2 can also measure the spectra of multiple objects in the night sky and analyse the polarisation of their light. Data from FORS2 are the basis of over 100 scientific studies published every year.
Contacts and sources:
Calum Turner
ESO
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