Advanced search    

Search: authors:"D. S. Berry"

8 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

Results of the digital co-addition of thirteen Schmidt films of the Virgo cluster of galaxies

We have digitally co-added APM scans of 13 Kodak TechPan films of the SE region of the Virgo cluster of galaxies. The field of the R-band films combined with the resolution of arcsec pixel-1 results in data file sizes of about 222 MBytes. The 13 scanned films have been aligned, co-added, corrected for vignetting effects and cleaned of stellar features. To illustrate the...

Results of the digital co-addition of thirteen Schmidt films of the Virgo cluster of galaxies

We have digitally co-added APM scans of 13 Kodak TechPan films of the SE region of the Virgo cluster of galaxies. The field of the R-band films combined with the resolution of arcsec pixel-1 results in data file sizes of about 222 MBytes. The 13 scanned films have been aligned, co-added, corrected for vignetting effects and cleaned of stellar features. To illustrate the...

Results of the digital co-addition of thirteen Schmidt films of the Virgo cluster of galaxies

We have digitally co-added APM scans of 13 Kodak TechPan films of the SE region of the Virgo cluster of galaxies. The field of the R-band films combined with the resolution of arcsec pixel-1 results in data file sizes of about 222 MBytes. The 13 scanned films have been aligned, co-added, corrected for vignetting effects and cleaned of stellar features. To illustrate the...

Maximum entropy mapping of IRAS data – W49A

An example of the mapping of IRAS Calibrated Reconstructed Detector Data using a maximum entropy method is presented. The triple source W49A was chosen because of the availability of previous far-infrared data for comparison. The method is shown to enhance considerably the resolution of images made from IRAS data, and to reproduce morphology consistent with previous KAO data, as...

Unusually strong reddening in the dusty elliptical IC 4320

Electronographic surface photometry in five wavebands has been used to determine the reddening law for the dust lane in the elliptical galaxy IC 4320 in the wavelength range 428–653 nm. The extinction varies linearly with inverse wavelength with a ratio of total to selective extinction R = 1.9, implying that the dust grains are smaller than in our Galaxy. This could be due to a...

HARP/ACSIS: a submillimetre spectral imaging system on the James Clerk Maxwell Telescope

4 R. Bennett 1 P. Hastings 1 I. Laidlaw 1 J. F. Lightfoot 1 T. Burgess 7 P. E. Dewdney 7 G. Hovey 7 A. G. Willis 7 R. Redman 6 B. Wooff 6 D. S. Berry 8 B. Cavanagh 8 G. R. Davis 8 J. Dempsey 8 P

Dust in the neutral globules of the Helix nebula, NGC 7293⋆

Images of the ionized knots and spokes within the helical structure of the Helix nebula have been obtained with subarcsecond resolution in the light of the Hα + [N II], [O III]5007 Å and [O II]3727 Å emission lines. The [O III] image reveals the knots and their tails in absorption. The globules and tails must be dusty and are seen against the diffuse, central [O III]-emitting...

A submillimetre imaging polarimeter at the James Clerk Maxwell Telescope

A polarimeter has been built for use with the Submillimetre Common-User Bolometer Array (SCUBA), on the James Clerk Maxwell Telescope (JCMT) in Hawaii. SCUBA is the first of a new generation of highly sensitive submillimetre cameras, and the UK/Japan Polarimeter adds a polarimetric imaging/photometry capability in the wavelength range 350 to 2000 μm. Early science results range...