[vsnet-ecl 7412] AP Leo observations by K.Nagai (8/Apr/2020)

[K.Nagai]

object         YYMMDD(UT)        mag    code
LEOAP        20200408.41980    9.931B  Nga.VSOLJ
LEOAP        20200408.42299    9.904B  Nga.VSOLJ
LEOAP        20200408.43569    9.858B  Nga.VSOLJ
LEOAP        20200408.46110    9.842B  Nga.VSOLJ
LEOAP        20200408.48650    9.892B  Nga.VSOLJ
LEOAP        20200408.48969    9.895B  Nga.VSOLJ
LEOAP        20200408.49286    9.927B  Nga.VSOLJ
LEOAP        20200408.49604    9.945B  Nga.VSOLJ
LEOAP        20200408.50240    9.936B  Nga.VSOLJ
LEOAP        20200408.50874    9.996B  Nga.VSOLJ
LEOAP        20200408.51192   10.111B  Nga.VSOLJ
LEOAP        20200408.51509   10.087B  Nga.VSOLJ
LEOAP        20200408.51828   10.125B  Nga.VSOLJ
LEOAP        20200408.52145   10.142B  Nga.VSOLJ
LEOAP        20200408.44310    8.588Ic  Nga.VSOLJ
LEOAP        20200408.44946    8.581Ic  Nga.VSOLJ
LEOAP        20200408.46851    8.574Ic  Nga.VSOLJ
LEOAP        20200408.48439    8.607Ic  Nga.VSOLJ
LEOAP        20200408.48757    8.620Ic  Nga.VSOLJ
LEOAP        20200408.49392    8.664Ic  Nga.VSOLJ
LEOAP        20200408.49709    8.681Ic  Nga.VSOLJ
LEOAP        20200408.50028    8.700Ic  Nga.VSOLJ
LEOAP        20200408.50345    8.733Ic  Nga.VSOLJ
LEOAP        20200408.50980    8.765Ic  Nga.VSOLJ
LEOAP        20200408.51616    8.828Ic  Nga.VSOLJ
LEOAP        20200408.51933    8.807Ic  Nga.VSOLJ
LEOAP        20200408.52251    8.851Ic  Nga.VSOLJ
---------------------------------------------------------------------
observer: K.Nagai (Kanagawa,Japan)
Instruments: 15L(F2) ST-402(KAF-402ME) , -5deg 2x2bin , B 120sec V 90sec I 60sec
comp. star TYC2-268.779.1 10.83B 9.93V 9.03I
check star TYC2-268.1025.1
AIP4Win v.2.4.0, Aperture 7radius
error 0.101(B) 0.040(I)
------------------------------------------------------------

The V band image was bright and saturated.
Therefore, it was can not measure.
This is a first maximum observation of an EW-type eclipsing binary.
In recent years, B and Ic have been brighter in the first maximum.
V is about the same.
The DSLR has a bright second maximum.
It is strange.


              - 08/Apr/2020 AP Leo OO Aqr (By K.Nagai) -
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   10                11                12                13   (UT)

Kazuo Nagai / PXS10547 at nifty.ne.jp ( http://eclipsingbinary.web.fc2.com/ )