Using colour in auroral imaging
The prototype of an auroral colour camera named Rainbow was run at the Auroral Station in Adventdalen, Svalbard, Norway, during a Finnish optical campaign in February, 2004. Instead of narrow band-pass filters and grey-scale images, this imager records colour images of the aurora using four wide-ban...
Published in: | Canadian Journal of Physics |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Canadian Science Publishing
2007
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1139/p06-090 http://www.nrcresearchpress.com/doi/pdf/10.1139/p06-090 |
id |
crcansciencepubl:10.1139/p06-090 |
---|---|
record_format |
openpolar |
spelling |
crcansciencepubl:10.1139/p06-090 2023-12-17T10:17:44+01:00 Using colour in auroral imaging Partamies, N Syrjäsuo, M Donovan, E 2007 http://dx.doi.org/10.1139/p06-090 http://www.nrcresearchpress.com/doi/pdf/10.1139/p06-090 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Physics volume 85, issue 2, page 101-109 ISSN 0008-4204 1208-6045 General Physics and Astronomy journal-article 2007 crcansciencepubl https://doi.org/10.1139/p06-090 2023-11-19T13:38:44Z The prototype of an auroral colour camera named Rainbow was run at the Auroral Station in Adventdalen, Svalbard, Norway, during a Finnish optical campaign in February, 2004. Instead of narrow band-pass filters and grey-scale images, this imager records colour images of the aurora using four wide-band channels (a colour CCD) with the field-of-view of about 150°. In this study, we show the results of fitting the four Rainbow channels (cyan-magenta, cyan-green, yellow-magenta, yellow-green) to reconstruct the traditionally filtered auroral wavelengths: green (557.7 nm), red (630.0 nm), and blue (427.8 nm), which were simultaneously recorded by the meridian scanning photometer (MSP) at the same station. This fit is qualitatively extremely good and almost linear throughout the data. In studying the auroral evolution during substorms, there is no significant difference whether MSP or Rainbow data are used. However, due to wide-band colour channels, the background illumination has a strong effect on the Rainbow data. During low signal levels (only background or faint aurora) the reconstruction errors are larger. The data for this study were captured on 21 February 2004. The time period of interest includes a substorm sequence, which is examined using colour auroral images and data from the MSP. PACS No.: 94.20.Ac Article in Journal/Newspaper Adventdalen Svalbard Canadian Science Publishing (via Crossref) Svalbard Norway Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Canadian Journal of Physics 85 2 101 109 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Physics and Astronomy |
spellingShingle |
General Physics and Astronomy Partamies, N Syrjäsuo, M Donovan, E Using colour in auroral imaging |
topic_facet |
General Physics and Astronomy |
description |
The prototype of an auroral colour camera named Rainbow was run at the Auroral Station in Adventdalen, Svalbard, Norway, during a Finnish optical campaign in February, 2004. Instead of narrow band-pass filters and grey-scale images, this imager records colour images of the aurora using four wide-band channels (a colour CCD) with the field-of-view of about 150°. In this study, we show the results of fitting the four Rainbow channels (cyan-magenta, cyan-green, yellow-magenta, yellow-green) to reconstruct the traditionally filtered auroral wavelengths: green (557.7 nm), red (630.0 nm), and blue (427.8 nm), which were simultaneously recorded by the meridian scanning photometer (MSP) at the same station. This fit is qualitatively extremely good and almost linear throughout the data. In studying the auroral evolution during substorms, there is no significant difference whether MSP or Rainbow data are used. However, due to wide-band colour channels, the background illumination has a strong effect on the Rainbow data. During low signal levels (only background or faint aurora) the reconstruction errors are larger. The data for this study were captured on 21 February 2004. The time period of interest includes a substorm sequence, which is examined using colour auroral images and data from the MSP. PACS No.: 94.20.Ac |
format |
Article in Journal/Newspaper |
author |
Partamies, N Syrjäsuo, M Donovan, E |
author_facet |
Partamies, N Syrjäsuo, M Donovan, E |
author_sort |
Partamies, N |
title |
Using colour in auroral imaging |
title_short |
Using colour in auroral imaging |
title_full |
Using colour in auroral imaging |
title_fullStr |
Using colour in auroral imaging |
title_full_unstemmed |
Using colour in auroral imaging |
title_sort |
using colour in auroral imaging |
publisher |
Canadian Science Publishing |
publishDate |
2007 |
url |
http://dx.doi.org/10.1139/p06-090 http://www.nrcresearchpress.com/doi/pdf/10.1139/p06-090 |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) |
geographic |
Svalbard Norway Adventdalen |
geographic_facet |
Svalbard Norway Adventdalen |
genre |
Adventdalen Svalbard |
genre_facet |
Adventdalen Svalbard |
op_source |
Canadian Journal of Physics volume 85, issue 2, page 101-109 ISSN 0008-4204 1208-6045 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/p06-090 |
container_title |
Canadian Journal of Physics |
container_volume |
85 |
container_issue |
2 |
container_start_page |
101 |
op_container_end_page |
109 |
_version_ |
1785585436360441856 |