1. Redshifts and optical identification of a sample of scintillating flat spectrum radio sources

2. How to screw up a slit viewing camera Tapio Pursimo & Maria Monguio i Montells Marilena Spavone Ingo Misgeld Jonas Johansson

3. The MASIV survey intraday variability (IDV) of extragalactic sources at centimeter wavelengths interstellar scintillation as an explanation caused by the turbulent, ionized ISM Aim: optical identification of a larger sample of IDV sources and determination of redshifts

4. Observations Spectroscopy and imaging with NOT/ALFOSC (Andalucia Faint Object Spectrograph and Camera) Spectroscopy with INT/IDS (Intermediate Dispersion Spectrograph)‏

5. Spectra Reduction Trimming Bias subtraction Overscan region

6. Flat Fielding

7. Sky subtraction

8. 1D Spectra Img4=>img5

9. Spectra Reduction Wavelenght calibration: Calibrate the arc:

10. Apply the calibration to the spectra:

11. Blocking filter For some spectra we used a blocking filter We use the blocking filter to block the second order.

12. J1048+7143 MgII => CIII => Z=1,3 img9

13. J1327+2210 MgII => CIII => Z=1,58 img10

14. J1221+2813 There are no lines. The spectrum is to noisy We need high SNR It is an BLLAC object

15. Reduction of imaging data

16. Bias frame

17. Skyflat

18. Reduction of imaging data

19. Reduced image

20. J0929+5013 60 sec exposure in R-band magnitudes estimated with fieldstars from the Guide Star Catalogue (GSC) => R ~ 17.2 mag limiting magnitude ~ 20.3 mag

21. ToO: SN2008dq

22. SN2008dq 60 & 300 sec in R-band 300 sec in V-band magnitude estimation with GSC stars in the field R SN ~ 18.6 mag & 18.2 mag V SN ~ 18.4 mag limiting magnitude on deep images ~ 22 mag

23. Does it make sense? T.P.