Wide-field Airglow Experiment
Two Micron All Sky Survey (2MASS)
University of Massachusetts, Amherst
On 7 and 8 June 1996 UT we (Joe Adams and
Mike Skrutskie -- pictured
below) cooled the 2MASS prototype
and observed the airglow
in a 9-degree field at J and H-band. To achieve this field-of-view
we placed a 140mm focal length lens in front of the dewar window.
The scale is about 120 arcseconds/pixel or 9 degrees across.
Below are two flat-fielded images of the near-zenith sky.
The peak to valley variations are about 15%. One could watch
these patterns drift across the screen and change in intensity
over the course of a few minutes. The movies at the end of this
page show time-lapse sequences.
fields (yes, these frames have been flat fielded!). The time
difference between these two images is 7 minutes.
Joe and Mike at 1.6um at sunset. Note the clouds and airglow
structure in the background.
And now, Joe Adams Productions presents...
THE MOVIE (preliminary versions)
Each frame is a 15 second exposure.
These movies are typically 4Mb in size.