Transcript Observations of the Sun at the Rimavská Sobota Observatory Pavol Rapavý and Daniela Rapavá Astronomical Observatory Tomašovská 63 979 01 Rimavská Sobota Slovakia http://www.astrors.szm.sk.

Observations of the Sun
at the Rimavská Sobota Observatory
Pavol Rapavý and Daniela Rapavá
Astronomical Observatory
Tomašovská 63
979 01 Rimavská Sobota
Slovakia
http://www.astrors.szm.sk
• 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.
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).
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.
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 )
Full disc
-
Sonnar 4/300 + TK2, fef = 600 mm
d = 1,52´´
Baader Astrosolar sheet (visual)
field of view 0,66 x 0,82°
resolution 2,3’’/px
exp. time ~ 10 ms
flat field
Details
-
160/2450 + 2x Barlow
fef = 4900 mm
d = 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
Details - animations
Prominences
-
110/1200 (Gajdušek,Otavský, Kozelský)
fef = 1800 mm
d = 0,1´´
Baader Ha 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
Prominences - animations
Popularisation