SPACE DEBRIS OBSERVATION WITH THE NEW EQUIPMENTS ON SAYAN OBSERVATORY

Transcription

1 SPACE DEBRIS OBSERVATION WITH THE NEW EQUIPMENTS ON SAYAN OBSERVATORY P. Papushev ; T. Tsoukker; V.I. Tergoev Institute of solar-terrestrial physics, Siberian branch Russian academy of science, Irkutsk, p.b. 293 papushev@iszf.irk.ru 8th US/Russian Space Surveillance Workshop April 2010

2 FACILITY AZT 33 Dome AZT33 telescope AZT 14 Ceiss 600 Domes ISS TETHERS GEO 106 E ; 51,37 N 8th US/Russian Space Surveillance Workshop,

3 1.7 meters Richey Chrétien telescope AZT-33IK Main mirror diameter (mm) 1700 Secondary mirror diameter (mm) 210 Focal ratio 20 FOV Safety ( % / 0.4 arcsec) 84 Meinel type focal reduser Equatorial fork mount: Pointing accuracy ( with T-point tools) Slewing Tracking Acseleraton 12 arc.min. ⅓ 5 deg/sec 3 deg/sec 2 deg/sec 2 30 arc sec (all sky) 8th US/Russian Space Surveillance Workshop,

4 AZT 33 devises Optical layout & focal plane devises ISD017 CCD 1Kx1K, 16 mkm Spectrometer layout Spectrometer: Grating- 150/ 600 groves/mm 40 A/ px (low resolution) 4 A/px (high resolution) 8th US/Russian Space Surveillance Workshop,

5 AZT 14 searching telescope 500 mm parabolic main mirror 3 component pre- focal corrector 2320 mm focal length 2.2 deg. FOV 2 arcsec/px (24mkm) plate scale sec 1.37 x1.37 deg.@ 5 sec 8th US/Russian Space Surveillance Workshop,

6 Control system RS485 Expres -АМ3 Satellite Communication Weather seeing monitor RS485 АЗТ14 control PC АZТ33 control and data aqusithion Ethernet 1000M Remote control Sync- NTP GPS reciver Acutime 2000 PPS Time Server TSIP All-Sky camera Joint control room for shared telescopes

7 Observational Results 8th US/Russian Space Surveillance Workshop,

8 Faint debris objects study Tracking 132 debris object (DO) fainter 15 (R) Photometrical study of the 29 debris objects DO 22 Johnson-Cousins BVR, Landolt plages calibrated, light and phase curves, more than 300 runs with duration more than 300 s 12 DO are fainter than 18(R) The very faint objects 21.5 (R) only two! 8th US/Russian Space Surveillance Workshop,

9 Faint debris objects study Non stochastic distribution on the sky Weak phase dependences Unusually (positive) phase dependences Period changes with phase angle Light curves shape at different filters 8th US/Russian Space Surveillance Workshop,

10 Observational Results 8th US/Russian Space Surveillance Workshop,

11 Phase curve debris variability Ekran 2 Deb (фильтр V) magnitude(v) Phase Angle 8th US/Russian Space Surveillance Workshop,

12 ZOO: unusually light curve 8th US/Russian Space Surveillance Workshop,

13 ZOO: unusually phase curve 8th US/Russian Space Surveillance Workshop,

14 ZOO: V- R light curves 8th US/Russian Space Surveillance Workshop,

15 Observational results MJD a (km) th US/Russian Space Surveillance Workshop,

16 Spectral observation

17 Control system upgrade Proposed solution Replacement of the secondary mirror support - Improvement a tracking performances of the telescope: Fine guiding of the moving object by rotating secondary mirror around M2 neutral point Improvement and support main and secondary mirrors alignment by tip-tilt secondary one Mini hexapod system for light weight (210 mm, 1.8 kg) secondary mirror 8th US/Russian Space Surveillance Workshop,

18 Wide field observations faint debris objects 8th US/Russian Space Surveillance Workshop,

19 1.6 meter wide field telescope AZT-33ВМ E2v custom CCD mosaic References Proceeding Russian Astronomical community (2002) Optical Journal of Russia AZT 33 VM Telescope ( 2009, no 9, in Eng) 8th US/Russian Space Surveillance Workshop,

20 1.6 meter wide field telescope AZT-33ВМ

21 Summary Sayan Observatory Equipments Successful application to faint space debris objects metrical and photometrical study Improves tracking performance for faint objects with the hexapod system Observational Results Tracking 132 GEO debris objects fainter 15 (R) Photometrical study of the 29 GEO debris objects Very faint objects 21.5 (R) were detected Low resolution spectra device were obtained Conclusion Faint debris flight mechanics is quite different from intact objects. Number of the perturbation factors in space environment must properly investigated Future Wide field of view, 2.8 degre/ 1.6 meter telescope is develop 8th US/Russian Space Surveillance Workshop,

22 Acknowledgments Many Thanks 8th US/Russian Space Surveillance Workshop,