scholarly journals Status and Perspectives of the Mini-MegaTORTORA Wide-field Monitoring System with High Temporal Resolution

10.14311/1710 ◽  
2013 ◽  
Vol 53 (1) ◽  
Author(s):  
Sergey Karpov ◽  
Grigory Beskin ◽  
Sergey Bondar ◽  
Alexey Perkov ◽  
Evgeny Ivanov ◽  
...  
Keyword(s):  
Monitoring System ◽  
Temporal Resolution ◽  
Field Monitoring ◽  
Status Report ◽  
High Temporal Resolution ◽  
Wide Field ◽  
Optical Components

Here we briefly summarize our long-term experience of constructing and operating wide-field monitoring cameras with sub-second temporal resolution to look for optical components of GRBs, fast-moving satellites and meteors. The general hardware requirements for these systems are discussed, along with algorithms for real-time detection and classification of various kinds of short optical transients. We also give a status report on the next generation, the MegaTORTORA multi-objective and transforming monitoring system, whose 6-channel (Mini-MegaTORTORA-Spain) and 9-channel prototypes (Mini-MegaTORTORA-Kazan) we have been building at SAO RAS. This system combines a wide field of view with subsecond temporal resolution in monitoring regime, and is able, within fractions of a second, to reconfigure itself to follow-up mode, which has better sensitivity and simultaneously provides multi-color and polarimetric information on detected transients.

scholarly journals Status and perspectives of Mini-MegaTORTORA wide-field monitoring system with high temporal resolution

2013 ◽  
Vol 61 ◽  
pp. 465-469 ◽  
Author(s):  
S. Karpov ◽  
G. Beskin ◽  
S. Bondar ◽  
A. Perkov ◽  
E. Ivanov ◽  
...  
Keyword(s):  
Monitoring System ◽  
Temporal Resolution ◽  
Field Monitoring ◽  
High Temporal Resolution ◽  
Wide Field

scholarly journals TWO-STATION METEOR OBSERVATIONS WITH MINI-MEGATORTORA AND FAVOR WIDE-FIELD MONITORING SYSTEMS

2019 ◽  
Vol 51 ◽  
pp. 127-130 ◽  
Author(s):  
S. Karpov ◽  
N. Orekhova ◽  
G. Beskin ◽  
A. Biryukov ◽  
S. Bondar ◽  
...  
Keyword(s):  
Monitoring System ◽  
Temporal Resolution ◽  
Field Monitoring ◽  
Monitoring Systems ◽  
Wide Field ◽  
Preliminary Results ◽  
Angular Velocities

Here we present the results of our four years long observations of meteors with Mini-MegaTORTORA wide-field monitoring system with sub-second temporal resolution. Over this period, we detected and catalogued more than 175000 faint meteors with magnitudes down to 8-10 mag and angular velocities up to 40 deg/s. Recently, we started double-station observations using Mini-MegaTORTORA together with reconstructed FAVOR camera on 3.8 km baseline. This setup allows to observe tens of faint meteors per night. We present the preliminary results of such observations.

scholarly journals The First Light of Mini-MegaTORTORA Wide-Field Monitoring System

2015 ◽  
Vol 24 (1) ◽  
Author(s):  
A. Biryukov ◽  
G. Beskin ◽  
S. Karpov ◽  
S. Bondar ◽  
E. Ivanov ◽  
...  
Keyword(s):  
Monitoring System ◽  
Temporal Resolution ◽  
Field Monitoring ◽  
Special Astrophysical Observatory ◽  
Wide Field ◽  
Optical Monitoring

AbstractWe describe the first light of a new 9-channel wide-field optical monitoring system with sub-second temporal resolution, Mini-MegaTORTORA, which is being tested now at the Special Astrophysical Observatory in Russian Caucasus. The system is able to observe the sky simultaneously in either wide (~900 deg

Wide-field optical monitoring with Mini-MegaTORTORA (MMT-9) multichannel high temporal resolution telescope

2017 ◽  
Vol 72 (1) ◽  
pp. 81-92 ◽  
Author(s):  
G. M. Beskin ◽  
S. V. Karpov ◽  
A. V. Biryukov ◽  
S. F. Bondar ◽  
E. A. Ivanov ◽  
...  
Keyword(s):  
Temporal Resolution ◽  
High Temporal Resolution ◽  
Wide Field ◽  
Optical Monitoring

Classification of Fresh Fractures of the Lunate

1988 ◽  
Vol 13 (4) ◽  
pp. 458-462
Author(s):  
H. TEISEN ◽  
J. HJARBAEK
Keyword(s):  
Vascular Anatomy ◽  
X Rays ◽  
Lunate Bone ◽  
X Ray

The X-rays of 17 patients with fresh fractures of the lunate bone have been reviewed. The fractures were classified according to their radiological appearances and according to the vascular anatomy of the lunate. A long term X-ray follow-up examination was performed.

Clinical Course of Different Types of Immune Reactions following Keratoplasty

2021 ◽  
Author(s):  
Philip Keye ◽  
Thabo Lapp ◽  
Daniel Böhringer ◽  
Sonja Heinzelmann ◽  
Philip Maier ◽  
...  
Keyword(s):  
Clinical Course ◽  
Corneal Graft ◽  
Long Term Outcomes ◽  
Immune Mediated ◽  
Corneal Graft Rejection ◽  
Different Types ◽  
Lost To Follow Up

Abstract Background Immune-mediated corneal graft rejection (IR) is a leading cause of corneal graft failure. The endothelium, stroma, epithelium, or a combination can be affected. Little is known about the long-term outcomes of different types of IR. Methods We reviewed the medical records of all keratoplasties that had been performed at our eye centre between 2003 and 2016 (n = 3934) for any kind of IR that occurred between the surgery and 2019. All patients with a definite diagnosis of IR and sufficient clinical data were included in the analysis. IRs were grouped according to the affected part of the graft (endothelial, stromal, epithelial, and mixed). We analysed the dynamics of recovery and the clinical outcomes. Results We identified a total of 319 patients with IR. Twenty-seven of those were lost to follow-up and were excluded from further analysis. Of the IRs, 89% affected the endothelium. Endothelial IR resulted more frequently in a considerable loss of endothelial cell density than other forms of IR. Stromal IR showed a lower relapse rate and a better visual recovery than other types of IR and resulted less often in a failure of the graft. Conclusions We herein report comprehensive data about the prognosis regarding functional recovery after different types of IR following keratoplasty. Our data underline that timely recognition and correct classification of IR are important because they determine the clinical course and prognosis.

scholarly journals Readmission after discharge from a medium secure unit

2013 ◽  
Vol 37 (4) ◽  
pp. 124-129 ◽  
Author(s):  
Martin Clarke ◽  
Conor Duggan ◽  
Clive R. Hollin ◽  
Nick Huband ◽  
Lucy McCarthy ◽  
...  
Keyword(s):  
Mental Health ◽  
Psychiatric Hospital ◽  
Psychiatric Hospitals ◽  
Patient Treatment ◽  
Multiple Sources ◽  
Long Term Follow Up ◽  
Secure Unit

Aims and methodWe examined readmission to psychiatric hospital of 550 patients discharged from one medium secure unit over 20 years. Multiple sources were used to obtain readmission data.ResultsReadmission was common, particularly to non-secure psychiatric hospitals. At least 339 patients (61.6%) were readmitted to any psychiatric hospital (mean follow-up 9.5 years), with over a third (37.6%) subsequently being readmitted to medium- or high-security or both. Of those discharged directly to the community, having previous in-patient treatment and a Mental Health Act classification of mental illness were associated with shorter time to first readmission.Clinical implicationsThe long-standing nature of disorders is evident in the high rates of readmission overall and the need for readmission to medium and high secure services, suggesting that these patients require long-term follow-up and support from mental health services.

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