Pub Date : 2021-09-01DOI: 10.22201/ia.14052059p.2021.53.40
S. Zola, V. Kouprianov, D. Reichart, G. Bhatta, D. Caton
In this paper, we describe the Skynet Robotic Telescope Network, a network of about 2 dozen small optical telescopes spanning four continents. For a prospective user of the network, we provide details on its operation and mention certain caveats potentially affecting observations taken under the control of Skynet software. The actual performance of the network is demonstrated by long-term observations of two blazars: OJ 49 and 3C 279. We show their photometric light curves acquired with a subset of Skynet telescopes in the 2018/19 observing seasons. Preliminary results of the analysis of the variability of these two targets are given, including the quantitative properties of light variations and the periods of possible Quasi Periodic Oscillations (QPOs) found in the seasonal light curves.
{"title":"LONG-TERM PHOTOMETRY WITH SKYNET ROBOTIC TELESCOPE NETWORK","authors":"S. Zola, V. Kouprianov, D. Reichart, G. Bhatta, D. Caton","doi":"10.22201/ia.14052059p.2021.53.40","DOIUrl":"https://doi.org/10.22201/ia.14052059p.2021.53.40","url":null,"abstract":"In this paper, we describe the Skynet Robotic Telescope Network, a network of about 2 dozen small optical telescopes spanning four continents. For a prospective user of the network, we provide details on its operation and mention certain caveats potentially affecting observations taken under the control of Skynet software. The actual performance of the network is demonstrated by long-term observations of two blazars: OJ 49 and 3C 279. We show their photometric light curves acquired with a subset of Skynet telescopes in the 2018/19 observing seasons. Preliminary results of the analysis of the variability of these two targets are given, including the quantitative properties of light variations and the periods of possible Quasi Periodic Oscillations (QPOs) found in the seasonal light curves.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":"59 12 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75991933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.22201/ia.14052059p.2021.53.10
Seyed Hossein Hendi, F. Bahrani
As robotic observatories getting more and more popular, it becomes mandatory for some places. In this regard, Iranian space agency trying to build the first robotic observatory in Iran. Although the telescope of Mahdasht space center is robotic at this time, it still needs more attention to make its dome robotic too. In this article, we introduce this space center and its development plan.
{"title":"INTRODUCING OBSERVATORY OF IRANIAN SPACE AGENCY MAHDASHT SPACE CENTER","authors":"Seyed Hossein Hendi, F. Bahrani","doi":"10.22201/ia.14052059p.2021.53.10","DOIUrl":"https://doi.org/10.22201/ia.14052059p.2021.53.10","url":null,"abstract":"As robotic observatories getting more and more popular, it becomes mandatory for some places. In this regard, Iranian space agency trying to build the first robotic observatory in Iran. Although the telescope of Mahdasht space center is robotic at this time, it still needs more attention to make its dome robotic too. In this article, we introduce this space center and its development plan.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":"1 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78044344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.22201/ia.14052059p.2021.53.11
C. Yeşi̇lyaprak, O. Keskin
Eastern Anatolia Observatory (DAG) will be the Turkey's largest (4m) and first infrared observatory is located in Erzurum city at the East part of Turkey with an altitude of 3170 m. We present the recent development of DAG until the end of September in 2019.
{"title":"EASTERN ANATOLIA OBSERVATORY (DAG): RECENT DEVELOPMENT IN 2019","authors":"C. Yeşi̇lyaprak, O. Keskin","doi":"10.22201/ia.14052059p.2021.53.11","DOIUrl":"https://doi.org/10.22201/ia.14052059p.2021.53.11","url":null,"abstract":"Eastern Anatolia Observatory (DAG) will be the Turkey's largest (4m) and first infrared observatory is located in Erzurum city at the East part of Turkey with an altitude of 3170 m. We present the recent development of DAG until the end of September in 2019.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":"14 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73185233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.22201/ia.14052059p.2021.53.06
A. Pál, L. Mészáros
In this paper we describe a multi-functional electronics design suitable to implement versatile embedded control functionalities, especially to drive autonomous telescope systems. This system of ours is a daisy-chained series of electronics having a DIN-rail compatible form factor, where each of the modules support all of the functionalities related to inter-module communication, autonomous computing and supporting physical connection and drivers to external interfaces.
{"title":"A DIN-RAIL BASED MODULAR DESIGN FOR CONTROLLING OBSERVATORIES AND TELESCOPES","authors":"A. Pál, L. Mészáros","doi":"10.22201/ia.14052059p.2021.53.06","DOIUrl":"https://doi.org/10.22201/ia.14052059p.2021.53.06","url":null,"abstract":"In this paper we describe a multi-functional electronics design suitable to implement versatile embedded control functionalities, especially to drive autonomous telescope systems. This system of ours is a daisy-chained series of electronics having a DIN-rail compatible form factor, where each of the modules support all of the functionalities related to inter-module communication, autonomous computing and supporting physical connection and drivers to external interfaces.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":"16 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85099851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.22201/ia.14052059p.2021.53.22
V. Topolev, V. Lipunov
This article discusses a model for the occurrence of quasiperiodic oscillations in the optical light curve of a gamma-ray burst(GRB). The model is based on the assumption that GRB occurs in a binary system with strong stellar wind. Progenitor is a small core of helium star which emits a strong stellar wind that perturbs by the compact companion (neutron star).There is a calculation of model parameters by using the GRB160625B as an example, for which the MASTER global network received an optical curve with high time resolution.
{"title":"THE GRB PROMPT OPTICAL EMISSION FEATURES ON THE EXAMPLE OF GRB160625B","authors":"V. Topolev, V. Lipunov","doi":"10.22201/ia.14052059p.2021.53.22","DOIUrl":"https://doi.org/10.22201/ia.14052059p.2021.53.22","url":null,"abstract":"This article discusses a model for the occurrence of quasiperiodic oscillations in the optical light curve of a gamma-ray burst(GRB). The model is based on the assumption that GRB occurs in a binary system with strong stellar wind. Progenitor is a small core of helium star which emits a strong stellar wind that perturbs by the compact companion (neutron star).There is a calculation of model parameters by using the GRB160625B as an example, for which the MASTER global network received an optical curve with high time resolution.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":"12 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85121310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.22201/ia.14052059p.2021.53.33
M. Catalán, M. Sánchez-piedra, M. Larrán, A. Vera, F. della Prugna, J. Marin, J. Relinque
The Royal Observatory of the Spanish Navy (ROA) is specialist in space geodesy since the beginning of the space race. In 1975 a laser station was installed at ROA in collaboration with the French CERGA (Centre de Recherches en Géodynamique et Astrométrie). Since 1980, ROA has operated that station by their own. This equipment routinely tracks artificial satellites equipped with retro-reflectors. In 2014 ROA opened a new field of research: tracking of artificial satellites currently not active and equipped with retroreflectors. This new area was a challenge given the poor orbital accuracies that are available for these objects as they were not tracked on a routine basis. This served as an approach to our final goal: to strictly monitor space debris, this is, any type of uncontrolled man-made orbiting objects. To fulfill the objective, since 2017, we made significant changes to our laser installation. The most important was the replacement of the old laser bench with two new ones. One transmitting 500 mW-pulses, and another laser bench with 25 W transmission power. The study for the installation of the later laser was financed through European Union (EU) H2020 fundings and granted by the Spanish Centre for Industrial Technological Development (CDTI). Although it allows the tracking of collaborative objects, it is ideal for tracking non-collaborative too. Tracking activities begin in November 2017. From then onward, non-collaborative objects are monitored on a regular basis. This work shows the modifications already made, and the results obtained until 2019.
{"title":"THE ROA LASER STATION: FROM ARTIFICIAL SATELLITES TO SPACE DEBRIS TRACKING","authors":"M. Catalán, M. Sánchez-piedra, M. Larrán, A. Vera, F. della Prugna, J. Marin, J. Relinque","doi":"10.22201/ia.14052059p.2021.53.33","DOIUrl":"https://doi.org/10.22201/ia.14052059p.2021.53.33","url":null,"abstract":"The Royal Observatory of the Spanish Navy (ROA) is specialist in space geodesy since the beginning of the space race. In 1975 a laser station was installed at ROA in collaboration with the French CERGA (Centre de Recherches en Géodynamique et Astrométrie). Since 1980, ROA has operated that station by their own. This equipment routinely tracks artificial satellites equipped with retro-reflectors. In 2014 ROA opened a new field of research: tracking of artificial satellites currently not active and equipped with retroreflectors. This new area was a challenge given the poor orbital accuracies that are available for these objects as they were not tracked on a routine basis. This served as an approach to our final goal: to strictly monitor space debris, this is, any type of uncontrolled man-made orbiting objects. To fulfill the objective, since 2017, we made significant changes to our laser installation. The most important was the replacement of the old laser bench with two new ones. One transmitting 500 mW-pulses, and another laser bench with 25 W transmission power. The study for the installation of the later laser was financed through European Union (EU) H2020 fundings and granted by the Spanish Centre for Industrial Technological Development (CDTI). Although it allows the tracking of collaborative objects, it is ideal for tracking non-collaborative too. Tracking activities begin in November 2017. From then onward, non-collaborative objects are monitored on a regular basis. This work shows the modifications already made, and the results obtained until 2019.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":"41 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80769008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.22201/ia.14052059p.2021.53.07
A. Unal, G. Kararsiz, C. T. Yilmaz, O. Keskin, C. Yeşi̇lyaprak
This study focuses on eliminating unknown amplitude wind disturbance for 2-DOF alt-azimuth configuration small telescopes. An adaptive controller is designed to overcome wind disturbance as a set and forget system. The mathematical model is derived based on 2-DOF alt-azimuth configuration. The wind disturbance is modeled as a sum of sinusoidal with unknown amplitude, frequency and phase by using Wind-Gust model. The controller aims to cancel the effect of the disturbance on the altitude and azimuth angles of the telescope while positioning or staying static on a dedicated configuration. The asymptotic stability is proven with the Lyapunov approach. The numerical study is illustrated to success of the proposed controller.
{"title":"WIND DISTURBANCE CANCELLATION FOR SMALLER ALT-AZIMUTH TELESCOPES","authors":"A. Unal, G. Kararsiz, C. T. Yilmaz, O. Keskin, C. Yeşi̇lyaprak","doi":"10.22201/ia.14052059p.2021.53.07","DOIUrl":"https://doi.org/10.22201/ia.14052059p.2021.53.07","url":null,"abstract":"This study focuses on eliminating unknown amplitude wind disturbance for 2-DOF alt-azimuth configuration small telescopes. An adaptive controller is designed to overcome wind disturbance as a set and forget system. The mathematical model is derived based on 2-DOF alt-azimuth configuration. The wind disturbance is modeled as a sum of sinusoidal with unknown amplitude, frequency and phase by using Wind-Gust model. The controller aims to cancel the effect of the disturbance on the altitude and azimuth angles of the telescope while positioning or staying static on a dedicated configuration. The asymptotic stability is proven with the Lyapunov approach. The numerical study is illustrated to success of the proposed controller.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":"21 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82112230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.22201/ia.14052059p.2021.53.09
E. Ansbro
The Space Exploration Ltd (SEL) has established new observatory facilities in Spain to provide the opportunity for astronomers to remotely access a range of research-grade telescopes and access to a spectrograph, polarimeter, photometry and adaptive-optics system. In the future, simultaneous automated multi-wavelength observations will also be tested and made available. This will enable the development of new observational and analytical processes for astronomy and astrophysics. Observations will be scheduled via Internet, including projects requiring long-term ongoing monitoring. Data can be accessed rapidly following scheduled observations. Access is on a commercial, non-competitive basis, avoiding conventional time-consuming administrative requirements, wait times, and disappointments.
{"title":"OPPORTUNITIES TO USE NEW ROBOTIC TELESCOPES IN SPAIN","authors":"E. Ansbro","doi":"10.22201/ia.14052059p.2021.53.09","DOIUrl":"https://doi.org/10.22201/ia.14052059p.2021.53.09","url":null,"abstract":"The Space Exploration Ltd (SEL) has established new observatory facilities in Spain to provide the opportunity for astronomers to remotely access a range of research-grade telescopes and access to a spectrograph, polarimeter, photometry and adaptive-optics system. In the future, simultaneous automated multi-wavelength observations will also be tested and made available. This will enable the development of new observational and analytical processes for astronomy and astrophysics. Observations will be scheduled via Internet, including projects requiring long-term ongoing monitoring. Data can be accessed rapidly following scheduled observations. Access is on a commercial, non-competitive basis, avoiding conventional time-consuming administrative requirements, wait times, and disappointments.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":"4 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75586135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.22201/ia.14052059p.2021.53.19
A. Valeev, A. Castro-Tirado, Y. Hu, V. Sokolov, I. Agudo, M. Caballero-Garcia, J. Cepa, J. Font, S. Jeong, A. Martin-Carrillo, S. Pandey, E. Pian, S. Oates, R. Sánchez-Ramírez, A. Sintes, B.-B. Zhang, E. Fernández-García
We performed optical spectroscopy of the candidates inside the gravitational wave errorboxes (S190408an, S190425z, S190426c, S190510g, S190728q, S190814bv). The spectral classification of 34 transients observed with the 10.4m Gran Telescopio de Canarias prior to 1 Sep 2019 is presented. We ruled out the association of these candidates with gravitational wave events.
{"title":"OPTICAL SPECTROSCOPY OF CANDIDATES IN THE LIGO/VIRGO BINARY MERGER ERROR BOXES","authors":"A. Valeev, A. Castro-Tirado, Y. Hu, V. Sokolov, I. Agudo, M. Caballero-Garcia, J. Cepa, J. Font, S. Jeong, A. Martin-Carrillo, S. Pandey, E. Pian, S. Oates, R. Sánchez-Ramírez, A. Sintes, B.-B. Zhang, E. Fernández-García","doi":"10.22201/ia.14052059p.2021.53.19","DOIUrl":"https://doi.org/10.22201/ia.14052059p.2021.53.19","url":null,"abstract":"We performed optical spectroscopy of the candidates inside the gravitational wave errorboxes (S190408an, S190425z, S190426c, S190510g, S190728q, S190814bv). The spectral classification of 34 transients observed with the 10.4m Gran Telescopio de Canarias prior to 1 Sep 2019 is presented. We ruled out the association of these candidates with gravitational wave events.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":"25 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77918931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.22201/ia.14052059p.2021.53.28
N. Mouawad, J. Fraine, J. Chebly, J. Bauer, R. Laher, M. Kelley, D. Bodewits
We present preliminary results from the Palomar Transient Factory (PTF) uniform sample of short period comets (SPCs) and long period comets (LPCs), captured between September 2009 and March 2013. We study their dynamical and physical properties in relation to their activity for a better understanding of cometary evolution. This observing campaign was part of PTF in its intermediate phase (iPTF) at the California Institute of Technology (Caltech). The photometric sample comprises more than 180 comets, which makes it one of the largest samples studied to-date. We present a new approach to identifying active comets that compares subtracted aperture magnitudes of comets with the distribution of stars of similar brightness in each image. In this paper, we present initial findings on cometary activity in relationship to their perihelion distances. We show differences between the distributions of the SPCs and that of the LPCs. As others predicted, it seems that a larger fraction of LPCs are found to be active at larger perihelia than for the SPCs. We look at ratios of active comets in different perihelia brackets and compare those to previous works and results. We do not discuss the statistical significance of our findings as this is still work in progress.
{"title":"FIRST FINDINGS ON COMETARY ACTIVITY FROM THE PTF COMET SAMPLE","authors":"N. Mouawad, J. Fraine, J. Chebly, J. Bauer, R. Laher, M. Kelley, D. Bodewits","doi":"10.22201/ia.14052059p.2021.53.28","DOIUrl":"https://doi.org/10.22201/ia.14052059p.2021.53.28","url":null,"abstract":"We present preliminary results from the Palomar Transient Factory (PTF) uniform sample of short period comets (SPCs) and long period comets (LPCs), captured between September 2009 and March 2013. We study their dynamical and physical properties in relation to their activity for a better understanding of cometary evolution. This observing campaign was part of PTF in its intermediate phase (iPTF) at the California Institute of Technology (Caltech). The photometric sample comprises more than 180 comets, which makes it one of the largest samples studied to-date. We present a new approach to identifying active comets that compares subtracted aperture magnitudes of comets with the distribution of stars of similar brightness in each image. In this paper, we present initial findings on cometary activity in relationship to their perihelion distances. We show differences between the distributions of the SPCs and that of the LPCs. As others predicted, it seems that a larger fraction of LPCs are found to be active at larger perihelia than for the SPCs. We look at ratios of active comets in different perihelia brackets and compare those to previous works and results. We do not discuss the statistical significance of our findings as this is still work in progress.","PeriodicalId":49602,"journal":{"name":"Revista Mexicana de Astronomia y Astrofisica","volume":"146 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83222215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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