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Pavol Rapavý and Daniela Rapavá
Observations of the Sunat the Rimavská Sobota Observatory
Astronomical Observatory Tomašovská 63
979 01 Rimavská SobotaSlovakia
http://www.astrors.szm.sk
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• Rimavská Sobota is a small town in the southern part of Slovakia; the observatory was founded in 1975, it belongs to the cultural institutions in the Slovak Republic. Its primary goal is education and the popularization of astronomy.
• Professional activities: the Sun, occultations, eclipses, interplanetary matter, photographs for popularization.
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Solar observations
There are more than 5900 drawings of the solar photosphere (Coude refractor 150/2250, magnification 56x, projection, the diameter of the drawing: 25 cm). Daily observations of the Sun are sent online to SIDC on a daily basis, to Sonne on a monthly basis, and to the national coordinators (Prešov – Slovak Republic, Valašské Meziříčí – Czech Republic).
In the past there we had the following observation programs:Photographic observations (RC 150/2250, ORWO DU 2 or 3 plate 9x12 cm, the diameter of the solar disc: 8 cm)Sudden Enhancements of Atmospherics (10, 27, 30 kHz) published in SGD.Photographs of sunspot details (RC 150/2250, ORWO MA8, 24x36mm, the diameter of the solar disc: 25 cm).
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Since 2003 the details of sunspots and prominences are observed using a CCD camera (donated by the firm SoftHard Technology).
We cooperate on the observations with the Astronomical Institute of the Slovak Academy of Sciences.An archive of digital images is in preparation.
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CCD camera SHT 1.3
- 1280 x 1024 px 6,7 x 6,7μm- 8,6 x 6,9 mm- chip Sony ICX085AL- Peltier, stabil. +10°C- 8/16 bit, YMMDD_HHMMSS_sss.tif- framegraber Shark (PCI karta)- C-mount- M42- live regime max. 12,5 fr/s- outreading 1s/ 0,3 s (in memory)- connection fw cable (data, driving )
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Full disc
- Sonnar 4/300 + TK2, fef = 600 mm- = 1,52´´- Baader Astrosolar sheet (visual)- field of view 0,66 x 0,82°- resolution 2,3’’/px- exp. time ~ 10 ms
flat field
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Details
- 160/2450 + 2x Barlow- fef = 4900 mm- = 0,7´´- Baader Astrosolar sheet (photo)- objective dethermal orange filter- field of view 4,8´x 6,0´- resolution 0,28´´/px- exp. time ~ 3 ms
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Details - animations
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Prominences
- 110/1200 (Gajdušek,Otavský, Kozelský)- fef = 1800 mm- = 0,1´´- Baader H filter (656,3 nm), bandwidth 0,4 nm- field of view 13´x 16´- resolution 0,8”/px- exp. time ~ 13 ms- all disc = composition 9 x 40°
Eruptive prominences PA 275, July 27,2005, 09:39-12:24 UT
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Prominences - animations
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Popularisation