In this paper, we describe the first multi-frequency synthesis observations of blazar 0059+581 made with the Radioastron spaceground interferometer in conjunction with the Korean VLBI Network (KVN), Medicina and Torun ground telescopes. We conducted these observations to assess the spaceground interferometer multi-frequency mode capability for the first time.

Abstract
1. Introduction
2. Radioastron Space Observatory
    2.1. Onboard Multi-Frequency System
3. Observations
4. Data Reduction and Calibration
5. Results
6. Conclusions
Acknowledgments
References

• Alexey Rudnitskiy(Astro Space Center, Lebedev Physical Institute, Russian Academy of Sciences) Corresponding Author
• Mikhail Shchurov(Astro Space Center, Lebedev Physical Institute, Russian Academy of Sciences)
• Taehyun Jung(Korea Astronomy and Space Science Institute)
• Marcello Giroletti(INAF Istituto di Radioastronomia)