Loading...
Please wait, while we are loading the content...
Similar Documents
Reducing the read noise of the james webb space telescope near infrared spectrograph detector subsystem
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Moseley, S. H. Rauscher, Bernard Lindler, Don Wilson, D. V. Fixsen, D. J. Arendt, Richard G. |
| Copyright Year | 2012 |
| Description | We describe a Wiener optimal approach to using the reference output and reference pixels that are built into Teledyne's HAWAII-2RG detector arrays. In this way, we are reducing the total noise per approximately 1000 second 88 frame up-the-ramp dark integration from about 6.5 e- rms to roughly 5 e- rms. Using a principal components analysis formalism, we achieved these noise improvements without altering the hardware in any way. In addition to being lower, the noise is also cleaner with much less visible correlation. For example, the faint horizontal banding that is often seen in HAWAII-2RG images is almost completely removed. Preliminary testing suggests that the relative gains are even higher when using non flight grade components. We believe that these techniques are applicable to most HAWAII-2RG based instruments. |
| File Size | 91592 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120009073 |
| Archival Resource Key | ark:/13960/t1sf7rs6n |
| Language | English |
| Publisher Date | 2012-02-06 |
| Access Restriction | Open |
| Subject Keyword | Astrophysics Infrared Detectors James Webb Space Telescope Spectrographs Noise Reduction Imaging Techniques Principal Components Analysis Formalism Pixels Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Presentation |
