The RTDC
Processing SMA Data
1.2 m Telescopes
AST/RO
Extra

Individual Surveys: Cassiopeia A (DHT14)

Ungerechts, Umbanhowar, & Thaddeus (1993), ApJ, 537, 221


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Sampling
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FITS Cubes
2.5 MB each
Raw:    DHT14_CasA_raw.fits
Raw Header:    DHT14_CasA_raw.txt
Interpolated*:    DHT14_CasA_interp.fits
Moment masked:    DHT14_CasA_mom.fits

* In each spectrum, <= 2 missing channels are filled by linear interpolation. In each spatial
plane, single missing pixels are filled by linear interpolation, first in l direction, then b.

Comments

This survey is also incorporated into the large second quadrant surveys (DHT17 & DHT18). However, in those surveys the CasA spectra are smoothed and interpolated onto a channel spacing of 1.300 km/s. In addition, in DHT18 the data are spatially smoothed and interpolated onto a 1/4° grid. Thus, the original survey given here, with beamwidth sampling and 0.65 km/s velocity resolution, should be used when possible.

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