OBSERVATORY TECHNICAL PARAMETERS
IRIDA South   IRIDA North
  • Telescope: Ritchey Chretien Astrograph, D = 300 mm (12”)
  • CCD camera: ATIK 4000M, active size 2048 x 2048 px, pixel size 7.4 mk, cooling: -45 degrees below the ambient temperature, real measured Gain = 0.45 e-/ADU, Read noise = 8.62 e-;
  • Working configurations: f/5 with focal reducer, FOV = 35.5 х 35.5 arcmin, FL = 1 470 mm, Image scale = 1.04 arcsec/px
  • Filters: B, V, Ic, (Johnson-Cousins); g’, r’, i’ (SLOAN type); SA200 diffraction grating for spectral analyses
  • Mount: ASA - DDM85 Premium Direct Drive Mount -100 kg payload
  • Dome – 3m ScopeDome (Poland)
  • Remote control through internet.
 
  • Telescope: ASA 12” Newton Astrograph, D = 300 mm (12”)
  • CCD camera: SBIG STL 11000M, active size 4008 x 2745 px, pixel size 9 mk, cooling: -40 degrees below the ambient temperature, real measured Gain = 0.63 e-/ADU, Read noise = 8.65 e-;
  • Working configurations: f/3.6 with focal reducer, FOV = 115 х 78 arcmin, FL = 1 080 mm, Image scale = 1.72 arcsec/px
  • Filters: broadband (color): L (clear, UVand IR cut), r' (SLOAN), i' (SLOAN) G (green), B (blue); narrowband: Ha – 7 nm (656.2 nm), OIII – 8.5 nm (500.7 nm), Rcont (red continuum)
  • Mount: ASA - DDM85 Direct Drive Mount -65 kg payload
  • Dome – 3m ScopeDome (Poland)
  • Remote control through internet.
             
       
             
PUBLICATIONS
 

SAO / NASA Astrophysics Data System (ADS)

orcid.org/0000-0003-1415-9525  

Research Gate

SCOPUS preview

 

32. The PDS 110 observing campaign - photometric and spectroscopic observations reveal eclipses are aperiodic
Osborn, H. P.; Kenworthy, M.; Rodriguez, J. E... Popov, V. and 70 more
2019MNRAS.485.1614O
2019/05

31. PY Boo and NSVS 7328383: Two totally-eclipsing W UMa stars with small mass ratios and close parameters
Kjurkchieva, Diana P.; Popov, Velimir A.; Petrov, Nikola I.
2019NewA...68...20K
2019/04

30. The Rise and Fall of the King: The Correlation between FO Aquarii's Low States and the White Dwarf's Spindown
Littlefield, Colin; Garnavich, Peter; Kennedy, Mark R. ... Popov, Velimir and 44 more
2019arXiv190411505L
2019/04

29. Photometric and Spectral Observations of the W UMa Stars NSVS 4161544 and 1SWASP J034501.24+493659.9. GAIA Challenges
Kjurkchieva, Diana; Stateva, Ivanka; Popov, Velimir A.; Marchev, D.
2019AJ....157...73K
2019/02

28. The W UMa binaries USNO-A2.0 1350-17365531, V471 Cas, V479 Lac and V560 Lac: light curve solutions and global parameters based on Gaia distances
Kjurkchieva, Diana P.; Popov, Velimir A.; Eneva, Yordanka; Petrov, Nikola I.
2019RAA....19...14K
2019/01

27. First observations with the 25 cm telescope of the Shumen Astronomical Observatory
Kjurkchieva, Diana; Ibryamov, Sunay; Borisov, Borislav; Marchev, Dragomir; Popov, Velimir; Dimitrov, Dinko
2018arXiv181206388K
2018/12

26. NSVS 2569022: a peculiar binary among W UMa stars with extremely small mass ratios
Kjurkchieva, Diana P.; Popov, Velimir A.; Petrov, Nikola I.
2018RAA....18..129K
2018/10

25. Observations and light curve solutions of three W UMa stars with periods of a quarter of a day
Kjurkchieva, Diana P.; Michel, Raul; Popov, Velimir A.
2018NewA...64...40K
2018/10

24. USNO-B1.0 1452-0049820 and ASAS J102556+2049.3: Two W UMa Binaries Close to the Lower Mass-ratio Limit
Kjurkchieva, Diana P.; Popov, Velimir A.; Petrov, Nikola I.
2018AJ....156...77K
2018/08

23. A Study of the Hα Variability of Be Stars
Dimitrov, Dinko P.; Kjurkchieva, Diana P.; Ivanov, Emil I.
2018AJ....156...61D
2018/08

22. Observations and light curve solutions of a selection of shallow-contact W UMa binaries
Kjurkchieva, Diana P.; Popov, Velimir A.; Vasileva, Doroteya L.; Petrov, Nikola I.
2018NewA...62...46K
2018/07

21. Observations and light curve solutions of three ultrashort-period W UMa binaries
Kjurkchieva, Diana P.; Michel, Raul; Popov, Velimir A.; Deras, Dan
2018NewA...62...41K
2018/07

20. Photometric and spectral observations of two W UMa stars with periods of one third of a day
Kjurkchieva, D. P.; Marchev, D. V.; Popov, V. A.
2018AN....339..472K
2018/07

19. Observations and Light Curve Solutions of the Eclipsing Binaries KR Lyn, CSS J110212+244412, NSVS 4917488 and NSVS 7336024
Kjurkchieva, D.; Popov, V. A.; Eneva, J.; Petrov, N.
2018SerAJ.196...21K
2018/06

18. New observations and transit solutions of the exoplanets HAT-P-53b and XO-5b
Kjurkchieva, Diana; Petrov, Nikola; Ibryamov, Sunay; Nikolov, Grigor; Popov, Velimir
2018SerAJ.196...15K
2018/06

17. Observations and light curve solutions of a selection of middle-contact W UMa binaries
Kjurkchieva, Diana Petrova; Popov, Velimir Angelov; Lyubenova Vasileva, Doroteya; Petrov, Nikola Ivanov
2018RAA....18...46K
2018/04

16. Observations and Modeling of the Transiting Exoplanets XO-2b, HAT-P-18b, and WASP-80b
Kjurkchieva, Diana P.; Popov, Velimir A.; Petrov, Nikola I.
2017SerAJ.195...41K
2017/12

15. Observations and light curve solutions of six deep-contact W UMa binaries
Kjurkchieva, D. P.; Popov, V. A.; Vasileva, D. L.; Petrov, N. I.
2017RMxAA..53..235K
2017/10

14. Intra-night variability of the blazar CTA 102 during its 2012 and 2016 giant outbursts
Bachev, R.; Popov, V.; Strigachev, A.; Semkov, E.; Ibryamov, S.; Spassov, B.; Latev, G.; Muñoz Dimitrova, R. V.; Boeva, S.
2017MNRAS.471.2216B
2017/10

13. V2551 Cyg: a pulsating star with enigmatic peculiarities
Kjurkchieva, Diana P.; Popov, Velimir A.; Marchev, Dragomir V.; Menzies, Kenneth T.; Petrov, Nikola I.
2017RAA....17...69K
2017/07

12. Observations and light curve solutions of the eclipsing stars CSS J075205.6+381909 and NSVS 691550
Kjurkchieva, D.; Popov, V.; Vasileva, D.; Eneva, Y.; Ibryamov, S.
2017BlgAJ..27...83K
2017/07

11. Discovery of optical flickering from the symbiotic star EF Aquilae
Zamanov, R. K.; Boeva, S.; Nikolov, Y. M.; Petrov, B.; Bachev, R.; Latev, G. Y.; Popov, V. A.; Stoyanov, K. A.; Bode, M. F.; Martí, J.; Tomov, T.; Antonova, A.
2017AN....338..680Z
2017/07

10. Observations and light curve solutions of the eclipsing W UMa binaries CSS J071813.2+505000, NSVS 2459652, NSVS 7178717 and NSVS 7377875
Kjurkchieva, D. P.; Popov, V. A.; Vasileva, D. L.; Petrov, N. I.
2017RMxAA..53..133K
2017/04

9. Observations and light curve solutions of the W UMa binaries V796 Cep, V797 Cep, CSS J015341.9+381641 and NSVS 3853195
Kjurkchieva, Diana Petrova; Popov, Velimir Angelov; Ibryamov, Sunay Ibryamov; Vasileva, Doroteya Lyubenova; Petrov, Nikola Ivanov
2017RAA....17...42K
2017/04

8. The newly discovered eclipsing cataclysmic star 2MASS J16211735 + 4412541 and its peculiarity
Kjurkchieva, Diana P.; Popov, Velimir A.; Vasileva, Doroteya L.; Petrov, Nikola I.
2017NewA...52....8K
2017/04

7. Observations and Light Curve Solutions of the Eclipsing Binaries USNO-B1.0 1395-0370184 and USNO-B1.0 1395-0370731
Kjurkchieva, D.; Popov, V. A.; Vasileva, D.; Petrov, N.
2016SerAJ.193...27K
2016/12

6. Return of the King: Time-series Photometry of FO Aquarii’s Initial Recovery from its Unprecedented 2016 Low State
Littlefield, Colin; Garnavich, Peter; Kennedy, Mark R.; ... Popov, Velimir and 27 more
2016ApJ...833...93L
2016/12

5. Intra-night optical activity of the blazar CTA 102 during its maximum state
Popov, Velimir; Bachev, Rumen
2016ATel.9776....1P
2016/11

4. Photometric observations and light curve solutions of the W UMa stars NSVS 2244206, NSVS 908513, CSS J004004.7+385531 and VSX J062624.4+570907
Kjurkchieva, Diana Petrova; Popov, Velimir Angelov; Vasileva, Doroteya Lyubenova; Petrov, Nikola Ivanov
2016RAA....16..135K
2016/09

3. Observations and Light Curve Solutions of Four Ultrashort-Period Binaries
Kjurkchieva, D.; Popov, V.; Vasileva, D.; Petrov, N.
2016SerAJ.192...21K
2016/06

2. Light curve solutions of six short-period binaries and peculiarities of two of them, NSVS 3640326 and V1007 Cas
Kjurkchieva, D.; Popov, V.; Petrov, N.; Ivanov, E.
2015CoSka..45...28K
2015/04

1. Observations of transits of the southern exoplanets WASP 4b and WASP 46b by using a 40 cm telescope
Kjurkchieva, Diana; Petrov, Nikola; Popov, Velimir; Ivanov, Emil
2015BlgAJ..22...21K
2015/01

VARIABLE STARS - PHOTOMETRY - SOME EXAMPLES
         
          CTA 102 (BLLac type)
V2551 Cyg (HADS) CSS J075205.6+381909 NSVS 691550 NSVS 7377875 NSVS 2459652 CSS J071813.2+505000
NSVS 7178717 EF Aql - symbiotic star CSS J015341.9+381641 NSVS 3853195 V0797 Cep V0796 Cep
2MASS J16211735 + 4412541 (catacl. var.) FO Aqr (Cataclysmic var., intermediate polar) USNO-B1.0 1395-0370184 USNO-B1.0 1395-0370731 VSX J062624.4+570907 NSVS 3676488 (CSS J004004.7+385531)
NSVS 908513 NSVS 2244206 CSS J224326.0+154532 CSS J214633.8+120016 CSS J171508.5+350658 CSS J171410.0+445850
V0568 Peg (Peg) NSVS 113026 (Cep) UCAC4 525-135123 (Del) NSVS 1776195 (Per) V1007 Cas (Cas) NSVS 3640326 (And)
NGC3191 and SN2017egm GK Per (Per) Bright nova in Delphinus: PNV J20233073+2046041 SN 2014L - type Ic in M99 (NGC4254) SN 2014J - type Ia in M82 (NGC3034) Super Nova type II in M74
EXOPLANETS - PHOTOMETRY - SOME EXAMPLES
       
        Exoplanet WASP-46b (Ind) Exoplanet WASP-4 b (Phe)
Exoplanet KOI 1459 b (Lyr) Exoplanet HAT-P-32b (And) Exoplanet WASP-52 b (Peg) Exoplanet HAT-P-18b (Her) Exoplanet HAT-P-37b (Dra) Exoplanet WASP-36 b (Hya)
SPECTROSCOPY - SOME EXAMPLES
   
    NSVS 2569022 FM Com EV Lac C2014 Q2 (Lovejoy)
COMETS & ASTEROIDS - SOME EXAMPLES
41/P - 22.03.2017 C/2013 US10 - 18.12.2015 C/2013 US10 - 9.12.2015 C/2014 Q2- 15.01.2015 C/2014 Q2 - 15.01.2015 C/2014 Q2 - 11.01.2015
AAVSO CERTIFICATES
 
Copyright: Velimir Popov and Emil Ivanov 2013. All Rights Reserved
e-mail: info@irida-observatory.org
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