ASTEROIDAL  OCCULTATION   REPORT  FORM     IOTA-ES

2018  02  21     TYC  2398-00366-1     KATJA  1113

Dariusz Miller

WARSAW
52 14' 13.4"  N
21 09' 21.6"  E
93   m
Datum (WGS84 prefered)

Single

NEGATIVE
S     21h  48' 40"    
B    49' 14"
      cloude 
F    52' 40"
I     53' 42"
J     54' 30"
I     54' 56"
J     55' 06"
I     55' 41"
J     55' 51"
I     56' 51"
J     57' 12"
I     58' 13"
J     58' 28"
E   21h  59' 22"                                                                                                     

Telescope:     Newtionian   D 270   F 6,3     Magnification  101
                     Mount:  AZ      Motor drive:  NO

VISUAL
RAD   CLOCK   STOPWATCH

Atmospheric transparency:   good
Wind:  2km/h
Star image stability:  very good
Temperature:  -7
Minor planet visible:  NO

Comment:     With the use of the  101  magnification, a few seconds break in the observation continuity due to the need to guide the telescope after the star movement manual azimuth and height adjustment  Before the observation begain, a small cloud moved . And then the sky with suffiecent clarity.