| Title: |
Photometric calibration of the Unistellar telescopes to the Johnson-Cousins System |
| Authors: |
Perrocheau, A.; Esposito, T.; Marchis, F.; Blaclard, G.; Peluso, D.; Verveen, A.; Cagna, A.; Lambert, A.; Wendelborn, A.; Graykowski, A.; Buurman, A.; Montoya, B.; Wiart, B.; Mirwald, B.; Eramia, B.; Guillet, B.; Parker, B.; Tobias, B.; Fifield, B.; Kim, B.; Logan, C.; Kyba, C.; Adhis, D.; Rivett, D.; Gary, D.; Havell, D.; Koster, D.; Swalander, D.; Bonilla, E.; Heinrich, E.; Chung, E.; Miny, E.; Garza-Licudine, E.; Richardot, F.; Mortecrette, F.; Saibi, F.; Simard, F.; Gagnon, F.; Dvorsky, G.; Simard, G.; Dreise, G.; Di Tommaso, G.; Khan, H.; Transom, I.; Brocard, I.; Venzor, I.; Laugier, J.; Siders, J.; Keen, J.; Kuehl, J.; Dvořáček, J.; Theurer, J.; Archer, J.; Bradley, J.; Perko, J.; Pickering, J.; Kornowski, J.; Chubb, J.; Randolph, J.; Potts, D.; Fischer, K.; Fukui, K.; Sibbernsen, K.; Borrot, K.; Heider, K.; Yamaguchi, K.; Swalander, L.; Millart, L.; Leroux, L.; Tamez, L.; Schmalstich, M.; Meylan, M.; Loose, M.; Billiani, M.; Lorber, M.; Davy, M.; Smallen, M.; Shimizu, M.; Ryno, M.; Lauvernier, M.; Cunningham, M.; Gagnon, M.; Primm, M.; Rushton, M.; Sibbernsen, M.; Mitchell, M.; Yoblonsky, N.; Delaunoy, N.; Kuchler-Mayor, N.; Clerget, O.; Huth, P.; Heafner, P.; Kuossari, P.; Tikkanen, P.; Yehle, P.; Blake, R.; Ang, R.; Foster, R.; Poggiali, R.; Janetzke, R.; Xu, R.; Kukita, R.; Kardel, S.; Lancelle, S.; Knöfel, S.; Saibi, S.; Will, S.; Latour, S.; Lawrence, S.; Adkinson, S.; Roux, S.; Okada, T.; Goto, T.; Mueller, T.; Ruckman, V.; Yue, W.; Ono, W.; Golisch, W.; Langvad, W.; Lorand, Y.; Arnaud, Y. |
| Source: |
Journal of Astronomical Telescopes, Instruments, and Systems |
| Publication Year: |
2025 |
| Collection: |
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam) |
| Description: |
Our purpose is to provide photometric data and tools to compute magnitudes from images obtained by Unistellar telescopes and enhance their usefulness to the broader astronomical community. To do so, we provide relationships transforming Unistellar complementary metal oxide semiconductor sensor Bayer filter bands (blue Be, green Ge, and red Re) to the Johnson-Cousins photometric system. To enable this calibration, stars with known spectra were observed with Unistellar telescopes by citizen scientists in the Unistellar Network. We obtained the zero-point magnitudes of the telescopes for each band by combining those spectra with the telescope sensor responses. Using the observations of 794 stars with known Johnson-Cousins magnitudes, we established the relations to transform the Unistellar magnitudes. The zero-point magnitudes and their associated errors for the three bands were derived. Polynomial expressions for the relation between the Unistellar colour Be−Re and the Johnson-Cousins magnitudes were obtained for stars with Unistellar colour −0.15 |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://gfzpublic.gfz.de/pubman/item/item_5036810; https://gfzpublic.gfz.de/pubman/item/item_5036810_2/component/file_5036880/5036810.pdf |
| Availability: |
https://gfzpublic.gfz.de/pubman/item/item_5036810; https://gfzpublic.gfz.de/pubman/item/item_5036810_2/component/file_5036880/5036810.pdf |
| Rights: |
info:eu-repo/semantics/openAccess ; https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.6761C247 |
| Database: |
BASE |