1. Serbian - Bulgarian mini-network telescopes: First simultaneous observations of variable objects
S. Boeva
G. Damljanović
B. Petrov
B. Spasov
M. Sekulić
G.Latev

2. Observatories

3. Telescopes 60 cm Vidojevica 50/70 Shmidt Rozhen 60 cm Belogradchik
2m Rozhen

4. Intention for simultaneous observations:
1. Need of 5-band photometry for our research of fast flux changes of cataclysmic and symbiotic variables (or other objects).
2. Time resolution of CCD frames.
3. Avoiding accidental local and instrumental errors.

5. Amplitude – average flux relation for 9 cataclysmic and symbiotic stars
(From Zamanov et al., MNRAS, 457, 2016)

6. Temperature of flickering source V 425 Cas

7. UBVRI light curves of V425 Cas from 08.12.2015 and 09.12.2015

8. UBVRI light curves of V794 Aql 08.12.2015

9. The first Bulgarian – Serbian “synchron”: HZ Her 23.06.2015

10. Congratulations to the Serbian colleagues for the new 1. 4 m telescope
Congratulations to the Serbian colleagues for the new 1.4 m telescope! Thank you for attention!