Recent

New minimum 3/11/2025

NN Dra

Radovan Mrllák, Hvězdárna v Úpici, 3/7/2025

Refraktor 120/600 mm Canon EOS 350D

. . .

New observation 3/11/2025

NN Dra

Radovan Mrllák, Hvězdárna v Úpici, 3/7/2025

Refraktor 120/600 mm Canon EOS 350D

. . .

New minimum 12/31/2024

NN Dra

Jens Jacobsen, Egeskov Observatory, 9/14/2024

100 mm Refractor Atik460Ex

. . .

New observation 12/31/2024

NN Dra

Jens Jacobsen, Egeskov Observatory, 9/14/2024

100 mm Refractor Atik460Ex

. . .

New minimum 8/12/2024

NN Dra

Vojtěch Školník, Hvězdárna v Úpici

Sct 200/2000 (reduced to 1300) + MI C2-7000A

Sct 200/2000 (reduced to 1300) + MI C2-7000A
----- EBFit result: -----
Tmin = 2460534.44259
Error (1 sigma): +0.00036/-0.00040 (Bootstrapping), +0.00069/-0.00074 (Prayer bead), +0.00024/-0.00024 (LSM)
Error (95% CI): +0.00074/-0.00074 (Bootstrapping), +0.00125/-0.00106 (Prayer bead)
LSM: chi^2 = 147.7, n_freedom = 89

. . .

New observation 8/12/2024

NN Dra

Vojtěch Školník, Hvězdárna v Úpici

Sct 200/2000 (reduced to 1300) + MI C2-7000A

Sct 200/2000 (reduced to 1300) + MI C2-7000A
----- EBFit result: -----
TminGJD = 2460534.44253
Error (1 sigma): +0.00038/-0.00036 (Bootstrapping), +0.00050/-0.00066 (Prayer bead), +0.00025/-0.00025 (LSM)
Error (95% CI): +0.00070/-0.00072 (Bootstrapping), +0.00090/-0.00083 (Prayer bead)
LSM: chi^2 = 114.5, n_freedom = 72

. . .

New minimum 1/10/2024

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000

----- EBFit result: -----
Tmin = 2460319.64657
Error (1 sigma): +0.00026/-0.00024 (Bootstrapping), +0.00006/-0.00006 (Prayer bead), +0.00021/-0.00021 (LSM)
Error (95% CI): +0.00077/-0.00053 (Bootstrapping), +0.00007/-0.00012 (Prayer bead)
LSM: chi^2 = 2.3, n_freedom = 5

. . .

New minimum 1/10/2024

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000

----- EBFit result: -----
Tmin = 2460319.45579
Error (1 sigma): +0.00021/-0.00021 (Bootstrapping), +0.00010/-0.00009 (Prayer bead), +0.00016/-0.00016 (LSM)
Error (95% CI): +0.00043/-0.00040 (Bootstrapping), +0.00011/-0.00013 (Prayer bead)
LSM: chi^2 = 46.8, n_freedom = 37

. . .

New minimum 1/10/2024

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000

----- EBFit result: -----
Tmin = 2460319.26560
Error (1 sigma): +0.00075/-0.00075 (Bootstrapping), +0.00041/-0.00042 (Prayer bead), +0.00036/-0.00036 (LSM)
Error (95% CI): +0.00224/-0.00210 (Bootstrapping), +0.00094/-0.00172 (Prayer bead)
LSM: chi^2 = 56.6, n_freedom = 21

. . .

New minimum 3/29/2023

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000

----- EBFit result: -----
Tmin = 2460032.49314
Error (1 sigma): +0.00015/-0.00014 (Bootstrapping), +0.00017/-0.00014 (Prayer bead), +0.00017/-0.00017 (LSM)
Error (95% CI): +0.00027/-0.00028 (Bootstrapping), +0.00027/-0.00019 (Prayer bead)
LSM: chi^2 = 62.9, n_freedom = 68

. . .

New minimum 3/29/2023

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000

----- EBFit result: -----
Tmin = 2460032.30041
Error (1 sigma): +0.00027/-0.00024 (Bootstrapping), +0.00017/-0.00024 (Prayer bead), +0.00040/-0.00040 (LSM)
Error (95% CI): +0.00056/-0.00048 (Bootstrapping), +0.00034/-0.00043 (Prayer bead)
LSM: chi^2 = 17.0, n_freedom = 41

. . .

New minimum 3/30/2022

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000

----- EBFit result: -----
Tmin = 2459659.57506
Error (1 sigma): +0.00016/-0.00017 (Bootstrapping), +0.00003/-0.00004 (Prayer bead), +0.00019/-0.00019 (LSM)
Error (95% CI): +0.00033/-0.00036 (Bootstrapping), +0.00007/-0.00006 (Prayer bead)
LSM: chi^2 = 77.3, n_freedom = 86

. . .

New minimum 3/30/2022

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000

----- EBFit result: -----
Tmin = 2459659.38607
Error (1 sigma): +0.00018/-0.00015 (Bootstrapping), +0.00018/-0.00024 (Prayer bead), +0.00021/-0.00021 (LSM)
Error (95% CI): +0.00034/-0.00030 (Bootstrapping), +0.00022/-0.00041 (Prayer bead)
LSM: chi^2 = 52.5, n_freedom = 82

. . .

New minimum 3/30/2022

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000

----- EBFit result: -----
Tmin = 2459657.47162
Error (1 sigma): +0.00029/-0.00031 (Bootstrapping), +0.00027/-0.00035 (Prayer bead), +0.00026/-0.00026 (LSM)
Error (95% CI): +0.00057/-0.00057 (Bootstrapping), +0.00040/-0.00057 (Prayer bead)
LSM: chi^2 = 90.9, n_freedom = 76

. . .

New minimum 5/17/2021

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000
----- EBFit result: -----
Tmin = 2459345.43424
Error (1 sigma): +0.00000/0.00000 (Bootstrapping), +0.00000/0.00000 (Prayer bead), +0.00000/-0.00000 (LSM)
Error (95% CI): +0.00000/0.00000 (Bootstrapping), +0.00000/0.00000 (Prayer bead)
LSM: chi^2 = 47713.5, n_freedom = 79

. . .

New minimum 5/17/2021

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000

----- EBFit result: -----
Tmin = 2459332.41632
Error (1 sigma): +0.00032/-0.00038 (Bootstrapping), +0.00104/-0.00074 (Prayer bead), +0.00025/-0.00025 (LSM)
Error (95% CI): +0.00060/-0.00075 (Bootstrapping), +0.00147/-0.00094 (Prayer bead)
LSM: chi^2 = 115.8, n_freedom = 52

. . .

New minimum 5/17/2021

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000

----- EBFit result: -----
Tmin = 2459328.39295
Error (1 sigma): +0.00040/-0.00040 (Bootstrapping), +0.00008/-0.00006 (Prayer bead), +0.00011/-0.00011 (LSM)
Error (95% CI): +0.00076/-0.00076 (Bootstrapping), +0.00012/-0.00021 (Prayer bead)
LSM: chi^2 = 769.7, n_freedom = 60

. . .

New minimum 3/10/2021

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000
----- EBFit result: -----
Tmin = 2459281.29991
Error (1 sigma): +0.00011/-0.00010 (Bootstrapping), +0.00003/-0.00003 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00022/-0.00021 (Bootstrapping), +0.00006/-0.00006 (Prayer bead)
LSM: chi^2 = 152.7, n_freedom = 53

. . .

New minimum 3/10/2021

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000
----- EBFit result: -----
Tmin = 2459280.53318
Error (1 sigma): +0.00024/-0.00021 (Bootstrapping), +0.00017/-0.00023 (Prayer bead), +0.00015/-0.00015 (LSM)
Error (95% CI): +0.00043/-0.00046 (Bootstrapping), +0.00028/-0.00029 (Prayer bead)
LSM: chi^2 = 283.2, n_freedom = 55

. . .

New minimum 3/10/2021

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000
----- EBFit result: -----
Tmin = 2459280.34345
Error (1 sigma): +0.00020/-0.00025 (Bootstrapping), +0.00005/-0.00004 (Prayer bead), +0.00015/-0.00015 (LSM)
Error (95% CI): +0.00048/-0.00045 (Bootstrapping), +0.00009/-0.00009 (Prayer bead)
LSM: chi^2 = 124.3, n_freedom = 51

. . .

New minimum 3/6/2021

NN Dra

Radovan Mrllák, Hvězdárna v Úpici

skywatcher newton 200/800 EQ6 C2-7000

skywatcher newton 200/800 EQ6 C2-7000
----- EBFit result: -----
Tmin = 2459274.40767
Error (1 sigma): +0.00038/-0.00040 (Bootstrapping), +0.00025/-0.00026 (Prayer bead), +0.00024/-0.00024 (LSM)
Error (95% CI): +0.00072/-0.00092 (Bootstrapping), +0.00068/-0.00113 (Prayer bead)
LSM: chi^2 = 150.8, n_freedom = 30

. . .

New observation 3/6/2021

NN Dra

Vojtěch Školník, Broumov NM Observatory

Sct 200/2000 + MI C2-7000A

Sct 200/2000 + MI C2-7000A
----- EBFit result: -----
TminGJD = 2459274.41001
Error (1 sigma): +0.00166/-0.00112 (Bootstrapping), +0.00128/-0.00238 (Prayer bead), +0.00028/-0.00028 (LSM)
Error (95% CI): +0.00366/-0.00229 (Bootstrapping), +0.00251/-0.00580 (Prayer bead)
LSM: chi^2 = 432.1, n_freedom = 54

. . .

New minimum 10/27/2020

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459110.54539
Error (1 sigma): +0.00029/-0.00034 (Bootstrapping), +0.00014/-0.00011 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00059/-0.00068 (Bootstrapping), +0.00023/-0.00017 (Prayer bead)
LSM: chi^2 = 292.9, n_freedom = 55

. . .

New minimum 10/27/2020

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459110.54479
Error (1 sigma): +0.00026/-0.00027 (Bootstrapping), +0.00023/-0.00021 (Prayer bead), +0.00012/-0.00012 (LSM)
Error (95% CI): +0.00048/-0.00050 (Bootstrapping), +0.00035/-0.00025 (Prayer bead)
LSM: chi^2 = 231.1, n_freedom = 51

. . .

New minimum 10/27/2020

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459110.54481
Error (1 sigma): +0.00026/-0.00031 (Bootstrapping), +0.00007/-0.00009 (Prayer bead), +0.00013/-0.00013 (LSM)
Error (95% CI): +0.00051/-0.00063 (Bootstrapping), +0.00023/-0.00017 (Prayer bead)
LSM: chi^2 = 233.4, n_freedom = 53

. . .

New minimum 10/27/2020

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459110.35567
Error (1 sigma): +0.00025/-0.00021 (Bootstrapping), +0.00014/-0.00018 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00048/-0.00041 (Bootstrapping), +0.00018/-0.00032 (Prayer bead)
LSM: chi^2 = 161.6, n_freedom = 56

. . .

New minimum 10/27/2020

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459110.35570
Error (1 sigma): +0.00024/-0.00021 (Bootstrapping), +0.00020/-0.00028 (Prayer bead), +0.00010/-0.00010 (LSM)
Error (95% CI): +0.00048/-0.00040 (Bootstrapping), +0.00024/-0.00045 (Prayer bead)
LSM: chi^2 = 291.9, n_freedom = 53

. . .

New minimum 10/27/2020

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459110.35658
Error (1 sigma): +0.00035/-0.00028 (Bootstrapping), +0.00027/-0.00032 (Prayer bead), +0.00013/-0.00013 (LSM)
Error (95% CI): +0.00066/-0.00056 (Bootstrapping), +0.00037/-0.00058 (Prayer bead)
LSM: chi^2 = 233.2, n_freedom = 48

. . .

New minimum 8/30/2020

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459087.38432
Error (1 sigma): +0.00034/-0.00041 (Bootstrapping), +0.00085/-0.00074 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00071/-0.00075 (Bootstrapping), +0.00169/-0.00119 (Prayer bead)
LSM: chi^2 = 226.9, n_freedom = 36

. . .

New minimum 8/30/2020

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459087.38494
Error (1 sigma): +0.00041/-0.00039 (Bootstrapping), +0.00139/-0.00102 (Prayer bead), +0.00011/-0.00011 (LSM)
Error (95% CI): +0.00088/-0.00065 (Bootstrapping), +0.00183/-0.00134 (Prayer bead)
LSM: chi^2 = 386.3, n_freedom = 38

. . .

New minimum 8/30/2020

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459087.38621
Error (1 sigma): +0.00040/-0.00046 (Bootstrapping), +0.00163/-0.00132 (Prayer bead), +0.00016/-0.00016 (LSM)
Error (95% CI): +0.00084/-0.00084 (Bootstrapping), +0.00247/-0.00191 (Prayer bead)
LSM: chi^2 = 207.7, n_freedom = 38

. . .

New minimum 8/30/2020

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459087.38478
Error (1 sigma): +0.00030/-0.00031 (Bootstrapping), +0.00061/-0.00044 (Prayer bead), +0.00007/-0.00007 (LSM)
Error (95% CI): +0.00064/-0.00057 (Bootstrapping), +0.00084/-0.00073 (Prayer bead)
LSM: chi^2 = 693.7, n_freedom = 40

. . .

New minimum 4/15/2020

NN Dra

Pokorný P., Česká Lípa

NWT 200/800 + Canon 600D

NWT 200/800 + Canon 600D
cmp:UCAC4-776-030754
chk:UCAC4-777-029077

----- EBFit result: -----
Tmin = 2458948.39711
Error (1 sigma): +0.00025/-0.00025 (Bootstrapping), +0.00026/-0.00027 (Prayer bead), +0.00010/-0.00010 (LSM)
Error (95% CI): +0.00059/-0.00045 (Bootstrapping), +0.00039/-0.00056 (Prayer bead)
LSM: chi^2 = 366.5, n_freedom = 70

. . .

New minimum 4/15/2020

NN Dra

Pokorný P., Česká Lípa

NWT 200/800 + Canon 600D

NWT 200/800 + Canon 600D
cmp:UCAC4-776-030754
chk:UCAC4-777-029077

----- EBFit result: -----
Tmin = 2458947.43946
Error (1 sigma): +0.00021/-0.00024 (Bootstrapping), +0.00012/-0.00008 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00045/-0.00044 (Bootstrapping), +0.00023/-0.00011 (Prayer bead)
LSM: chi^2 = 249.4, n_freedom = 105

. . .

New minimum 3/30/2019

NN Dra

CCD Sekce Štefánikova hvězdárna, Štefánik observatory, Prague

Mirotar LNS 180/1000 + Canon 350D

Mirotar LNS 180/1000 + Canon 350D
30+60_1600

----- EBFit result: -----
Tmin = 2457798.43315
Error (1 sigma): +0.00036/-0.00040 (Bootstrapping), +0.00066/-0.00046 (Prayer bead), +0.00033/-0.00033 (LSM)
Error (95% CI): +0.00072/-0.00072 (Bootstrapping), +0.00087/-0.00060 (Prayer bead)
LSM: chi^2 = 223.5, n_freedom = 213

. . .

New minimum 3/24/2019

NN Dra

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
Tmin = 2458565.33462
Error (1 sigma): +0.00007/-0.00007 (Bootstrapping), +0.00005/-0.00004 (Prayer bead), +0.00003/-0.00003 (LSM)
Error (95% CI): +0.00014/-0.00013 (Bootstrapping), +0.00009/-0.00007 (Prayer bead)
LSM: chi^2 = 516.6, n_freedom = 93

. . .

New observation 3/24/2019

NN Dra

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
B.R.N.O.!

----- EBFit result: -----
TminGJD = 2458565.33462
Error (1 sigma): +0.00007/-0.00008 (Bootstrapping), +0.00004/-0.00004 (Prayer bead), +0.00003/-0.00003 (LSM)
Error (95% CI): +0.00013/-0.00013 (Bootstrapping), +0.00009/-0.00007 (Prayer bead)
LSM: chi^2 = 516.6, n_freedom = 93

. . .

New minimum 10/13/2018

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-8300

NWT 300/1200+MII G2-8300

----- EBFit result: -----
Tmin = 2458404.34034
Error (1 sigma): +0.00018/-0.00017 (Bootstrapping), +0.00017/-0.00022 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00035/-0.00032 (Bootstrapping), +0.00026/-0.00032 (Prayer bead)
LSM: chi^2 = 3332.9, n_freedom = 225

. . .

New minimum 7/5/2018

NN Dra

Roman Ehrenberger, Crow-Observatory Vranová

NWT 150/600+MII G2-8300

NWT 150/600+MII G2-8300

----- EBFit result: -----
Tmin = 2458303.45157
Error (1 sigma): +0.00015/-0.00014 (Bootstrapping), +0.00007/-0.00008 (Prayer bead), +0.00008/-0.00008 (LSM)
Error (95% CI): +0.00027/-0.00027 (Bootstrapping), +0.00008/-0.00015 (Prayer bead)
LSM: chi^2 = 471.7, n_freedom = 139

. . .

New observation 5/11/2018

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + Rc

EQ6 + 0.25-m f/4 + CCD ST7 + Rc
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.669 0.382872 12.34-12.98R EW (VSX 20180410)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT Rc
# RED CMunipack 1.1.26
# NOTE 06/07 IV 2018; Rc_200_90s (131); 5.3h; decline to minimum P
# COND clear weather

. . .

New minimum 4/3/2018

NN Dra

Roman Ehrenberger, Vranová

NWT 150/600+MII G2-8300

NWT 150/600+MII G2-8300

----- EBFit result: -----
Tmin = 2458211.36765
Error (1 sigma): +0.00016/-0.00015 (Bootstrapping), +0.00041/-0.00038 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00034/-0.00028 (Bootstrapping), +0.00059/-0.00065 (Prayer bead)
LSM: chi^2 = 729.3, n_freedom = 134

. . .

New minimum 1/1/2018

NN Dra

Jens Jacobsen, Egeskov Observatory

EQ6, 100mm refractor, Atik 314

EQ6, 100mm refractor, Atik 314
----- EBFit result: -----
Tmin = 2457473.37369
Error (1 sigma): +0.00016/-0.00018 (Bootstrapping), +0.00005/-0.00006 (Prayer bead), +0.00043/-0.00043 (LSM)
Error (95% CI): +0.00034/-0.00033 (Bootstrapping), +0.00007/-0.00011 (Prayer bead)
LSM: chi^2 = 15.3, n_freedom = 88

. . .

New minimum 5/17/2017

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + BVRcIc

EQ6 + 0.25-m f/4 + CCD ST7 + BVRcIc
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.669 0.382872 12.34-12.98R EW (VSX 20170501)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT Rc
# RED CMunipack 1.1.26 + Peranso 2.50 + SPHE/VSES Upload Form (2012) var.astro.cz
# NOTE 30 IV / 01 V 2017; Rc_240_90s (232/114); 6.7h; minimum S, maximum
# NOTE 2457874.43469 +/- 0.00018; 20170430 22:25:57 (UT) GEO
# COND clear weather

----- EBFit result: -----
Tmin = 2457874.43486
Error (1 sigma): +0.00055/-0.00047 (Bootstrapping), +0.00059/-0.00064 (Prayer bead), +0.00021/-0.00021 (LSM)
Error (95% CI): +0.00129/-0.00093 (Bootstrapping), +0.00073/-0.00089 (Prayer bead)
LSM: chi^2 = 201.9, n_freedom = 69

. . .

New observation 5/17/2017

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + BVRcIc

. . .

New minimum 4/11/2017

NN Dra

Vrašťák M, LSO, Slovakia

NWT 280/1500+MII G2-1600, pointer 80/400+G1-0301

NWT 280/1500+MII G2-1600, pointer 80/400+G1-0301
----- EBFit result: -----
Tmin = 2457854.33380
Error (1 sigma): +0.00023/-0.00020 (Bootstrapping), +0.00008/-0.00005 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00042/-0.00036 (Bootstrapping), +0.00013/-0.00018 (Prayer bead)
LSM: chi^2 = 31.6, n_freedom = 18

. . .

New minimum 4/11/2017

NN Dra

Vrašťák M, LSO, Slovakia

NWT 280/1500+MII G2-1600, pointer 80/400+G1-0301

NWT 280/1500+MII G2-1600, pointer 80/400+G1-0301
----- EBFit result: -----
Tmin = 2457854.33414
Error (1 sigma): +0.00015/-0.00013 (Bootstrapping), +0.00005/-0.00006 (Prayer bead), +0.00012/-0.00012 (LSM)
Error (95% CI): +0.00031/-0.00025 (Bootstrapping), +0.00011/-0.00010 (Prayer bead)
LSM: chi^2 = 16.2, n_freedom = 18

----- EBFit result: -----
Tmin = 2457854.33410
Error (1 sigma): +0.00013/-0.00012 (Bootstrapping), +0.00006/-0.00006 (Prayer bead), +0.00011/-0.00011 (LSM)
Error (95% CI): +0.00027/-0.00022 (Bootstrapping), +0.00009/-0.00012 (Prayer bead)
LSM: chi^2 = 22.2, n_freedom = 21

. . .

New minimum 4/11/2017

NN Dra

Vrašťák M, LSO, Slovakia

NWT 280/1500+MII G2-1600, pointer 80/400+G1-0301

NWT 280/1500+MII G2-1600, pointer 80/400+G1-0301
----- EBFit result: -----
Tmin = 2457854.33402
Error (1 sigma): +0.00014/-0.00015 (Bootstrapping), +0.00007/-0.00006 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00031/-0.00028 (Bootstrapping), +0.00009/-0.00007 (Prayer bead)
LSM: chi^2 = 25.4, n_freedom = 18

. . .

New minimum 4/3/2017

NN Dra

Roman Ehrenberger, Vranová

Quadruplet LNS 65/420+MII G2-8300

Quadruplet LNS 65/420+MII G2-8300
----- EBFit result: -----
Tmin = 2457840.36056
Error (1 sigma): +0.00015/-0.00014 (Bootstrapping), +0.00005/-0.00005 (Prayer bead), +0.00010/-0.00010 (LSM)
Error (95% CI): +0.00029/-0.00028 (Bootstrapping), +0.00010/-0.00008 (Prayer bead)
LSM: chi^2 = 227.9, n_freedom = 105

. . .

New minimum 1/30/2016

NN Dra

Jens Jacobsen, Egeskov Observatory

EQ6, 102 mm refractor, Atik 314

EQ6, 102 mm refractor, Atik 314

----- EBFit result: -----
Tmin = 2457115.38348
Error (1 sigma): +0.00030/-0.00029 (Bootstrapping), +0.00007/-0.00005 (Prayer bead), +0.00038/-0.00038 (LSM)
Error (95% CI): +0.00057/-0.00059 (Bootstrapping), +0.00010/-0.00010 (Prayer bead)
LSM: chi^2 = 73.9, n_freedom = 113

. . .

New minimum 10/4/2015

NN Dra

Jens Jacobsen, Egeskov Observatory

EQ6, 102 mm ED, Atik 314

EQ6, 102 mm ED, Atik 314
----- EBFit result: -----
Tmin = 2457115.38348
Error (1 sigma): +0.00032/-0.00028 (Bootstrapping), +0.00004/-0.00004 (Prayer bead), +0.00038/-0.00038 (LSM)
Error (95% CI): +0.00057/-0.00060 (Bootstrapping), +0.00007/-0.00007 (Prayer bead)
LSM: chi^2 = 77.6, n_freedom = 121

. . .

New minimum 5/16/2015

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

EQ6 + 0.25-m f/4 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT Rc
# RED CMunipack 1.1.26 + Peranso 2.50 + SPHE/VSES Upload Form (2012) var.astro.cz
# NOTE 08/09 III 2015; Rc_280_90s (273); 7.5h; minimum S, maximum, minimum P
# NOTE 2457090.30623 +/- 0.00016; 20150308 19:20:58 (UT) GEO
# NOTE 2457090.49633 +/- 0.00016; 20150308 23:54:43 (UT) GEO
# COND clear weather => clear weather (cirrus); moonlight

----- EBFit result: -----
Tmin = 2457090.49629
Error (1 sigma): +0.00018/-0.00020 (Bootstrapping), +0.00012/-0.00010 (Prayer bead), +0.00016/-0.00016 (LSM)
Error (95% CI): +0.00038/-0.00036 (Bootstrapping), +0.00021/-0.00021 (Prayer bead)
LSM: chi^2 = 165.4, n_freedom = 106

. . .

New minimum 5/16/2015

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

EQ6 + 0.25-m f/4 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT Rc
# RED CMunipack 1.1.26 + Peranso 2.50 + SPHE/VSES Upload Form (2012) var.astro.cz
# NOTE 08/09 III 2015; Rc_280_90s (273); 7.5h; minimum S, maximum, minimum P
# NOTE 2457090.30623 +/- 0.00016; 20150308 19:20:58 (UT) GEO
# NOTE 2457090.49633 +/- 0.00016; 20150308 23:54:43 (UT) GEO
# COND clear weather => clear weather (cirrus); moonlight

----- EBFit result: -----
Tmin = 2457090.30622
Error (1 sigma): +0.00017/-0.00018 (Bootstrapping), +0.00011/-0.00013 (Prayer bead), +0.00016/-0.00016 (LSM)
Error (95% CI): +0.00035/-0.00035 (Bootstrapping), +0.00020/-0.00018 (Prayer bead)
LSM: chi^2 = 141.2, n_freedom = 105

. . .

New observation 5/16/2015

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

. . .

New minimum 1/30/2014

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

EQ6 + 0.25-m f/4 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + Peranso 2.50
# NOTE 25/26 I 2014; R_256_90s (233); 6.9h; minimum P, maximum, minimum S
# NOTE 246683.49272 +/- 0.00023; 20140125 23:49:31 (UT) GEO
# NOTE 246683.68444 +/- 0.00017; 20140126 04:25:36 (UT) GEO
# COND clear weather -> somewhat cloudy (very thick cirrus) -> clear weather -> somewhat cloudy (cirrus)

----- EBFit result: -----
Tmin = 2456683.68462
Error (1 sigma): +0.00023/-0.00025 (Bootstrapping), +0.00016/-0.00011 (Prayer bead), +0.00026/-0.00026 (LSM)
Error (95% CI): +0.00048/-0.00048 (Bootstrapping), +0.00024/-0.00019 (Prayer bead)
LSM: chi^2 = 42.6, n_freedom = 59

. . .

New minimum 1/30/2014

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

EQ6 + 0.25-m f/4 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + Peranso 2.50
# NOTE 25/26 I 2014; R_256_90s (233); 6.9h; minimum P, maximum, minimum S
# NOTE 246683.49272 +/- 0.00023; 20140125 23:49:31 (UT) GEO
# NOTE 246683.68444 +/- 0.00017; 20140126 04:25:36 (UT) GEO
# COND clear weather -> somewhat cloudy (very thick cirrus) -> clear weather -> somewhat cloudy (cirrus)

----- EBFit result: -----
Tmin = 2456683.49181
Error (1 sigma): +0.00034/-0.00033 (Bootstrapping), +0.00063/-0.00039 (Prayer bead), +0.00029/-0.00029 (LSM)
Error (95% CI): +0.00069/-0.00065 (Bootstrapping), +0.00103/-0.00090 (Prayer bead)
LSM: chi^2 = 137.5, n_freedom = 109

. . .

New observation 1/30/2014

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

EQ6 + 0.25-m f/4 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + Peranso 2.50
# NOTE 25/26 I 2014; R_256_90s (233); 6.9h; minimum P, maximum, minimum S
# NOTE 246683.49272 +/- 0.00023; 20140125 23:49:31 (UT) GEO
# NOTE 246683.68444 +/- 0.00017; 20140126 04:25:36 (UT) GEO
# COND clear weather -> somewhat cloudy (very thick cirrus) -> clear weather -> somewhat cloudy (cirrus)

. . .

New minimum 5/25/2013

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

EQ6 + 0.25-m f/4 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + Peranso 2.50
# NOTE 18/19 V 2013; R_230_90s (229); 6.0h; minimum S, maximum, minimum P
# NOTE 2456431.36601 +/- 0.00015; 20130518 20:47:03 (UT) GEO
# NOTE 2456431.55775 +/- 0.00014; 20130519 01:23:10 (UT) GEO
# COND clear weather

----- EBFit result: -----
Tmin = 2456431.55847
Error (1 sigma): +0.00021/-0.00024 (Bootstrapping), +0.00012/-0.00014 (Prayer bead), +0.00027/-0.00027 (LSM)
Error (95% CI): +0.00050/-0.00049 (Bootstrapping), +0.00018/-0.00022 (Prayer bead)
LSM: chi^2 = 39.8, n_freedom = 43

. . .

New observation 5/25/2013

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

EQ6 + 0.25-m f/4 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + Peranso 2.50
# NOTE 18/19 V 2013; R_230_90s (229); 6.0h; minimum S, maximum, minimum P
# NOTE 2456431.36601 +/- 0.00015; 20130518 20:47:03 (UT) GEO
# NOTE 2456431.55775 +/- 0.00014; 20130519 01:23:10 (UT) GEO
# COND clear weather

. . .

New minimum 5/25/2013

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

EQ6 + 0.25-m f/4 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + Peranso 2.50
# NOTE 18/19 V 2013; R_230_90s (229); 6.0h; minimum S, maximum, minimum P
# NOTE 2456431.36601 +/- 0.00015; 20130518 20:47:03 (UT) GEO
# NOTE 2456431.55775 +/- 0.00014; 20130519 01:23:10 (UT) GEO
# COND clear weather

----- EBFit result: -----
Tmin = 2456431.36554
Error (1 sigma): +0.00018/-0.00018 (Bootstrapping), +0.00007/-0.00007 (Prayer bead), +0.00015/-0.00015 (LSM)
Error (95% CI): +0.00038/-0.00040 (Bootstrapping), +0.00014/-0.00010 (Prayer bead)
LSM: chi^2 = 142.0, n_freedom = 76

. . .

New minimum 5/5/2012

NN Dra

Francesco Scaggiante, Danilo Zardin,Marco Fiaschi, Gruppo Astrofili Salese \\\\\\\"Galileo Galilei\\\\\\\" S.M di Sala (Venezia ) ITALIA

Newton 410/1710 ccd Audine KAF402ME

. . .

New minimum 3/13/2012

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

EQ6 + 0.25-m f/4 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + AVE 2.51
# NOTE 05/06 III 2012; R_180_90s (156/65); minimum S
# NOTE 2455992.58482 +/- 0.00024; 20120306 02:02:08 (UT) GEO
# COND clear weather; full moon period

. . .

New observation 3/13/2012

NN Dra

Martin Lehky, Hradec Králové, CZ (MPC 048)

EQ6 + 0.25-m f/4 + CCD ST7 + R

EQ6 + 0.25-m f/4 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + AVE 2.51
# NOTE 05/06 III 2012; R_180_90s (156/65); minimum S
# NOTE 2455992.58482 +/- 0.00024; 20120306 02:02:08 (UT) GEO
# COND clear weather; full moon period

. . .

New observation 4/25/2011

NN Dra

Jiří Polák, HaP Plzeň

ED 120/900

ED 120/900
KB:8, Dalekohled: ED 120/900, CCD: G2-8300, Binning 3x3, Bez filtru, Expozice 30s, Chlazeno na -20°C, Místo: HaP Plzeň, Pozorovací podmínky: ze začátku dobré (na Plzeň), později hodně světlá obloha, Měsíc v úplňku. Špatný flat, obsahoval proužky-musel být rozostřen.
První pozorování s novou CCD.
Byl opraven čas (chybně zadaná korekce).

. . .

New minimum 4/25/2011

NN Dra

Jiří Polák, HaP Plzeň

ED 120/900

ED 120/900
Telescope: ED 120/900, CCD: G2-8300, Binning 3x3, Exposition 30s, Place: HaP Plzeň

. . .

New minimum 4/4/2011

NN Dra

Martin Lehky, MPC 048 - Hradec Kralove

EQ6 + 0.25-m f/5 + CCD ST7 + R

EQ6 + 0.25-m f/5 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + AVE 2.51
# NOTE 22/23 II 2011; R_160_90s (160/113); minimum S
# NOTE 2455615.45077 +/- 0.00018; 20110222 22:49:07 (UT) GEO
# COND foggy weather

. . .

New observation 4/4/2011

NN Dra

Martin Lehky, MPC 048 - Hradec Kralove

EQ6 + 0.25-m f/5 + CCD ST7 + R

. . .

New minimum 4/3/2011

NN Dra

Martin Lehky, MPC 048 - Hradec Kralove

EQ6 + 0.25-m f/5 + CCD ST7 + R

EQ6 + 0.25-m f/5 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + AVE 2.51
# NOTE 06/07 II 2011; R_170_90s (157/51); minimum P
# NOTE 2455599.55945 +/- 0.00009; 20110207 01:25:36 (UT) GEO
# COND clear weather

. . .

New observation 4/3/2011

NN Dra

Martin Lehky, MPC 048 - Hradec Kralove

EQ6 + 0.25-m f/5 + CCD ST7 + R

EQ6 + 0.25-m f/5 + CCD ST7 + R
# NAME NN Dra
# VAR 13:04:03.00 +65:15:24.0 2451285.6690 0.382872 12.34-12.98R EW (VSX 20110208)
# OBS Martin Lehky (Hradec Kralove CZ; 0.25-m f/4 reflector + CCD ST7)
# FLT R
# RED CMunipack 1.1.26 + AVE 2.51
# NOTE 06/07 II 2011; R_170_90s (157/51); minimum P
# NOTE 2455599.55945 +/- 0.00009; 20110207 01:25:36 (UT) GEO
# COND clear weather

. . .

New star 9/4/2007

NN Dra

admin

RA: 196.0124999850, DE: 65.2566666660, MAG (max): 12.340 (R), EW

. . .