Imaging of polar cap patches with a low-cost airglow camera: pilot observations in Svalbard, Norway
Abstract We evaluate the capability of a low-cost all-sky imager (ASI), which has been operative in Longyearbyen (78.1° N, 15.5° E), Norway, to detect 630.0 nm airglow signatures of polar cap patches. The ASI is composed of a small camera, with a charge-coupled device (CCD), manufactured by Watec Co...
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ftdatacite:10.6084/m9.figshare.c.4729820 2023-05-15T17:08:28+02:00 Imaging of polar cap patches with a low-cost airglow camera: pilot observations in Svalbard, Norway Hosokawa, Keisuke Ogawa, Yasunobu Taguchi, Satoshi 2019 https://dx.doi.org/10.6084/m9.figshare.c.4729820 https://springernature.figshare.com/collections/Imaging_of_polar_cap_patches_with_a_low-cost_airglow_camera_pilot_observations_in_Svalbard_Norway/4729820 unknown figshare https://dx.doi.org/10.1186/s40623-019-1094-7 CC BY 4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Biophysics Space Science 29999 Physical Sciences not elsewhere classified FOS Physical sciences Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Collection article 2019 ftdatacite https://doi.org/10.6084/m9.figshare.c.4729820 https://doi.org/10.1186/s40623-019-1094-7 2021-11-05T12:55:41Z Abstract We evaluate the capability of a low-cost all-sky imager (ASI), which has been operative in Longyearbyen (78.1° N, 15.5° E), Norway, to detect 630.0 nm airglow signatures of polar cap patches. The ASI is composed of a small camera, with a charge-coupled device (CCD), manufactured by Watec Co. Ltd., a fish-eye lens, and an optical filter whose central wavelength is 632.0 nm and full-width half maximum (FWHM) is 10 nm. In Longyearbyen, another ASI equipped with a cooled electron-multiplying charge-coupled device (EMCCD) camera has been operative for observations of polar cap patches. We compare the images from the two systems and investigate the performance of the low-cost ASI. On the night of December 4, 2013, a series of polar cap patches were observed by the EMCCD ASI. The low-cost ASI also detected regions of enhanced 630.0 nm airglow passing through the fields-of-view. The quality of the raw images from the low-cost ASI obtained every 4 s were visibly much worse than that of the EMCCD ASI. However, an integration of 7–15 consecutive images made it possible to capture the temporal evolution and spatial structure of the patches, for example, their anti-sunward propagation and finger-like structures along the trailing edge. The estimated values of the absolute optical intensity from the low-cost ASI were found to be consistent with those from the EMCCD ASI, whereby the offset was Article in Journal/Newspaper Longyearbyen Svalbard DataCite Metadata Store (German National Library of Science and Technology) Svalbard Longyearbyen Norway |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biophysics Space Science 29999 Physical Sciences not elsewhere classified FOS Physical sciences Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences |
spellingShingle |
Biophysics Space Science 29999 Physical Sciences not elsewhere classified FOS Physical sciences Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Hosokawa, Keisuke Ogawa, Yasunobu Taguchi, Satoshi Imaging of polar cap patches with a low-cost airglow camera: pilot observations in Svalbard, Norway |
topic_facet |
Biophysics Space Science 29999 Physical Sciences not elsewhere classified FOS Physical sciences Medicine 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences |
description |
Abstract We evaluate the capability of a low-cost all-sky imager (ASI), which has been operative in Longyearbyen (78.1° N, 15.5° E), Norway, to detect 630.0 nm airglow signatures of polar cap patches. The ASI is composed of a small camera, with a charge-coupled device (CCD), manufactured by Watec Co. Ltd., a fish-eye lens, and an optical filter whose central wavelength is 632.0 nm and full-width half maximum (FWHM) is 10 nm. In Longyearbyen, another ASI equipped with a cooled electron-multiplying charge-coupled device (EMCCD) camera has been operative for observations of polar cap patches. We compare the images from the two systems and investigate the performance of the low-cost ASI. On the night of December 4, 2013, a series of polar cap patches were observed by the EMCCD ASI. The low-cost ASI also detected regions of enhanced 630.0 nm airglow passing through the fields-of-view. The quality of the raw images from the low-cost ASI obtained every 4 s were visibly much worse than that of the EMCCD ASI. However, an integration of 7–15 consecutive images made it possible to capture the temporal evolution and spatial structure of the patches, for example, their anti-sunward propagation and finger-like structures along the trailing edge. The estimated values of the absolute optical intensity from the low-cost ASI were found to be consistent with those from the EMCCD ASI, whereby the offset was |
format |
Article in Journal/Newspaper |
author |
Hosokawa, Keisuke Ogawa, Yasunobu Taguchi, Satoshi |
author_facet |
Hosokawa, Keisuke Ogawa, Yasunobu Taguchi, Satoshi |
author_sort |
Hosokawa, Keisuke |
title |
Imaging of polar cap patches with a low-cost airglow camera: pilot observations in Svalbard, Norway |
title_short |
Imaging of polar cap patches with a low-cost airglow camera: pilot observations in Svalbard, Norway |
title_full |
Imaging of polar cap patches with a low-cost airglow camera: pilot observations in Svalbard, Norway |
title_fullStr |
Imaging of polar cap patches with a low-cost airglow camera: pilot observations in Svalbard, Norway |
title_full_unstemmed |
Imaging of polar cap patches with a low-cost airglow camera: pilot observations in Svalbard, Norway |
title_sort |
imaging of polar cap patches with a low-cost airglow camera: pilot observations in svalbard, norway |
publisher |
figshare |
publishDate |
2019 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.4729820 https://springernature.figshare.com/collections/Imaging_of_polar_cap_patches_with_a_low-cost_airglow_camera_pilot_observations_in_Svalbard_Norway/4729820 |
geographic |
Svalbard Longyearbyen Norway |
geographic_facet |
Svalbard Longyearbyen Norway |
genre |
Longyearbyen Svalbard |
genre_facet |
Longyearbyen Svalbard |
op_relation |
https://dx.doi.org/10.1186/s40623-019-1094-7 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.4729820 https://doi.org/10.1186/s40623-019-1094-7 |
_version_ |
1766064248348213248 |