The first release of data from the Herschel ATLAS: the SPIRE images

Details The first release of data from the Herschel ATLAS: the SPIRE images The first release of data from the Herschel ATLAS: the SPIRE images

2010-10-27

arxiv.org/abs/1010.5782v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

8 pages, 4 figures, submitted to MNRAS

Scientific paper

We have reduced the data taken with the Spectral and Photometric Imaging Receiver (SPIRE) photometer on board the Herschel Space Observatory in the Science Demonstration Phase (SDP) of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS). We describe the data reduction, which poses specific challenges, both because of the sheer size of the data, and because only two scans are made for each region. We implement effective solutions to process the bolometric timelines into maps, and show that correlations among detectors are negligible, and that the photometer is stable on time scales up to 250 s. This is longer than the time the telescope takes to cross the observed sky region, and it allows us to use naive binning methods for an optimal reconstruction of the sky emission. The maps have equal contribution of confusion and white instrumental noise, and the latter is estimated to 5.3, 6.4, and 6.7 mJy/beam (1-{\sigma}), at 250, 350, and 500 \mu{m}, respectively. This pipeline is used to reduce other H-ATLAS observations, as they became available, and we discuss how it can be used with the optimal map maker implemented in the Herschel Interactive Processing Environment (HIPE), to improve computational efficiency and stability. The SDP dataset is available from http://www.h-atlas.org/.

Affiliated with

Also associated with

No associations

Rating

The first release of data from the Herschel ATLAS: the SPIRE images does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The first release of data from the Herschel ATLAS: the SPIRE images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The first release of data from the Herschel ATLAS: the SPIRE images will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-582220