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GN Laser Guide Star

Gemini North LGS Trails

This image features the Gemini North telescope during laser guide star operations (LGS). This time lapse image consists of roughly 40 images edited together to create a star trails image, with an attenuation on the earlier images, which makes the earlier images appear to fade out. Shot near the summit of Maunakea, the glow of nearby Waimea can clearly be seen reflected in the low cloud cover. Also prominently featured in the image are the new photovoltaic (PV) panels that have been installed at all of the Gemini Observatory facilities.

Laser and Star Trails over Gemini North

This long-duration fish-eye view of the Gemini North telescope facility shows the propagation of the laser guide star (LGS) laser on the night of May 21, 2010. Featuring the sky over Mauna Kea (looking north), the glow of both dusk and dawn, as well as star trails, fill the sky and provide a backdrop for the orange glow of the Gemini LGS laser as it tracks through the sky. The LGS laser from the W.M. Keck Observatory and the peak of Haleakalā on Maui can be seen on close examination of the image. The bright streak on the left is the setting moon.

Gemini North LGS by moonlight

Nighttime image of the Gemini North Observatory, on the summit of Maunakea, during a Laser Guide Star (LGS) run, taken from the catwalk outside of the UH 2.2 meter telescope. LGS creates an “artificial star” which is used as a reference source for adaptive optics systems on Gemini instruments. The Canada-France-Hawaii Telescope (CFHT) is visible behind Gemini. This image was taken in preparation for two time-lapse movies which were recorded the following evening.

Gemini North Fish Eye LGS

Here is a "fish eye" image of the Gemini North observatory during a Laser Guide Star (LGS) run, taken from the catwalk around the outside of the UH 2.2 meter telescope. LGS creates an “artificial star” which is used as a reference source for adaptive optics systems on Gemini instruments. Directly behind the Gemini Observatory is the Canada-France-Hawaii Telescope; continuing counter clockwise is the NASA Infrared Telescope Facility, the double domes of the W. M. Keck Observatory, followed by the Subaru Telescope.

Gemini North with Laser Guide Star

A 180-degree fisheye view of the Gemini North telescope on Mauna Kea, Hawai‘i lit by moonlight and the red glow of a passing automobile’s taillights shining through the wind-vent gates. At the top of the 7-story high telescope structure the laser guide star (LGS) can be seen propagating into the sky where it creates an artificial star used by an adaptive optics system to correct for distortions caused by turbulence in the Earth’s atmosphere.

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