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GMOS Data Format and Reduction

This section describes both the data format for all Gemini instruments, including GMOS, and the Gemini IRAF Package, which supports imaging, as well as long-slit, multi-object, and IFU spectroscopic data from both GMOS-N and GMOS-S.

Gemini Instrument Feasibility Study

Gemini is pleased to announce the launch of 4 feasibility studies as a result of the GIFS RfP process. The four studies (alphabetically) are GEONIS, GMOX, MOVIES, and OCTOCAM. Below is a brief synopsis of each study:

Gemini IRAF 1.13 available in recent Ureka 1.5.1 release

Version 1.13 of the Gemini IRAF package is now available in the latest version of Ureka, 1.5.1, released last month (

Star Pair’s Dusty Disk Shines Light on Planet Formation

Left: J-band polarized intensity (P⊥) images. Right: P⊥ scaled by r2, where r is the distance in pixels from the central binary, corrected for projection effects. Both images are shown on a linear scale and oriented north up and east left. The coronagraph is represented by the black filled circles.

Status and Availability

Latest News

6 Nov 2014

Gemini South resuming operations

Commercial power has been restored to Cerro Pachón, and the road will be passable for a delivery of fuel for the backup generator on Monday. Thus, we will be resuming science operations early next week.

Don’t Blink: A Light Show in a Dynamic Stellar Nursery

The region of Re50 and Re50N observed in 2006 with SuprimeCam at the Subaru telescope, and in 2014 with the Gemini Multi-Object Spectrograph (GMOS) at the Gemini South telescope. A [SII] filter was used for both images. The seeing was in both cases 0.5 arcsec. Each image is about 3 arcmin wide. North is up and east is left.

Changes in the universe don’t often happen on human timescales.

Gemini nightlog summaries now available

The Gemini North nightlog summary and Gemini South nightlog summary are now available from the Gemini Science home page. The default view is the current week of summaries for each site, however dates can be selected back to late 2003.

Image Gallery