Recent

New minimum 5/1/2025

AC Boo

112

Milan Uhlar, JIRNY, 4/30/2025

QHY294, LNS200, OAT

. . .

New observation 5/1/2025

AC Boo

112

Milan Uhlar, JIRNY, 4/30/2025

QHY294, LNS200, OAT

. . .

New minimum 4/18/2025

AC Boo

112

Roman Ehrenberger, Crow Observatory Vranová, 4/4/2025

NWT 300/1200+MII G2-3200

. . .

New observation 4/18/2025

AC Boo

112

Roman Ehrenberger, Crow Observatory Vranová, 4/4/2025

NWT 300/1200+MII G2-3200

. . .

New minimum 4/18/2025

AC Boo

112

Roman Ehrenberger, Crow Observatory Vranová, 4/4/2025

NWT 300/1200+MII G2-3200

. . .

New observation 4/18/2025

AC Boo

112

Roman Ehrenberger, Crow Observatory Vranová, 4/4/2025

NWT 300/1200+MII G2-3200

. . .

New minimum 4/18/2025

AC Boo

112

Roman Ehrenberger, Crow Observatory Vranová, 4/4/2025

NWT 300/1200+MII G2-3200

. . .

New observation 4/18/2025

AC Boo

112

Roman Ehrenberger, Crow Observatory Vranová, 4/4/2025

NWT 300/1200+MII G2-3200

. . .

New minimum 3/18/2025

AC Boo

112

Milan Uhlar, JIRNY, 3/18/2025

QHY294, LNS200, OAT

. . .

New minimum 3/18/2025

AC Boo

112

Milan Uhlar, JIRNY, 3/17/2025

QHY294, LNS200, OAT

. . .

New observation 3/18/2025

AC Boo

112

Milan Uhlar, JIRNY, 3/17/2025

QHY294, LNS200, OAT

. . .

New minimum 5/3/2024

QHY294, LNS200, OAT
filter: clear
temp: -10C
binning: 2x2
exp_time: 90sec.
equip.: QHY294
lens: 200/8

----- EBFit result: -----
Tmin = 2460433.44586
Error (1 sigma): +0.00021/-0.00019 (Bootstrapping), +0.00004/-0.00004 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00041/-0.00039 (Bootstrapping), +0.00007/-0.00009 (Prayer bead)
LSM: chi^2 = 122.7, n_freedom = 48

. . .

New observation 5/3/2024

AC Boo

112

Milan Uhlar, JIRNY

QHY294, LNS200, OAT

QHY294, LNS200, OAT
filter: clear
temp: -10C
binning: 2x2
exp_time: 90sec.
equip.: QHY294
lens: 200/8

. . .

New minimum 1/11/2024

AC Boo

112

Sjoerd Dufoer, Brussels - Heliport

Vixen 20cm VMC200L

Vixen 20cm VMC200L

----- EBFit result: -----
Tmin = 2460319.60642
Error (1 sigma): +0.00008/-0.00008 (Bootstrapping), +0.00002/-0.00002 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00015/-0.00017 (Bootstrapping), +0.00004/-0.00004 (Prayer bead)
LSM: chi^2 = 736.1, n_freedom = 232

. . .

New observation 1/10/2024

AC Boo

112

Matúš Kamenec, Prešov

SkyWatcher REF 102/500

. . .

New minimum 8/15/2023

AC Boo

112

Matúš Kamenec, Prešov

SkyWatcher REF 102/500

SkyWatcher REF 102/500
#Observatory>Presov
#Observer>Matus Kamenec
#Telescope>SkyWatcher 102/500 / EQ3-2
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>30s ISO 800
#Target>AC Boo
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
Tmin = 2460171.39047
Error (1 sigma): +0.00068/-0.00076 (Bootstrapping), +0.00028/-0.00019 (Prayer bead), +0.00021/-0.00021 (LSM)
Error (95% CI): +0.00283/-0.00158 (Bootstrapping), +0.00476/-0.00081 (Prayer bead)
LSM: chi^2 = 449.7, n_freedom = 22

. . .

New observation 8/15/2023

AC Boo

112

Matúš Kamenec, Prešov

SkyWatcher REF 102/500

SkyWatcher REF 102/500
#Observatory>Presov
#Observer>Matus Kamenec
#Telescope>SkyWatcher 102/500 / EQ3-2
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>30s ISO 800
#Target>AC Boo
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
TminGJD = 2460171.39027
Error (1 sigma): +0.00043/-0.00076 (Bootstrapping), +0.00050/-0.00033 (Prayer bead), +0.00018/-0.00018 (LSM)
Error (95% CI): +0.00117/-0.00138 (Bootstrapping), +0.00417/-0.00073 (Prayer bead)
LSM: chi^2 = 274.1, n_freedom = 17
secondary minimum

. . .

New observation 5/11/2023

AC Boo

112

Matúš Kamenec, Kolonica

SkyWatcher Newton 200/1200

SkyWatcher Newton 200/1200
#Observatory>Kolonica
#Observer>Matus Kamenec
#Telescope>SkyWatcher 200/1200 EQ6
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>30s ISO 800
#Target>AC Boo
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
TminGJD = 2460070.41933
Error (1 sigma): +0.00008/-0.00010 (Bootstrapping), +0.00011/-0.00016 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00017/-0.00018 (Bootstrapping), +0.00017/-0.00022 (Prayer bead)
LSM: chi^2 = 168.2, n_freedom = 68

. . .

New minimum 4/16/2023

AC Boo

112

Milan Uhlar, JIRNY

Canon 7D MarkII, LNS300, OAT

Canon 7D MarkII, LNS300, OAT
ISO1600, RGGB binning2x2, 110sec, F8

----- EBFit result: -----
Tmin = 2460045.39435
Error (1 sigma): +0.00037/-0.00044 (Bootstrapping), +0.00046/-0.00049 (Prayer bead), +0.00049/-0.00049 (LSM)
Error (95% CI): +0.00074/-0.00090 (Bootstrapping), +0.00058/-0.00066 (Prayer bead)
LSM: chi^2 = 51.8, n_freedom = 49

. . .

New observation 4/11/2023

AC Boo

112

Milan Uhlar, JIRNY

Canon 7D MarkII, LNS300, OAT

Canon 7D MarkII, LNS300, OAT
ISO1600, RGGB binning2x2, 110sec, F8

. . .

New observation 9/8/2022

AC Boo

112

Matúš Kamenec, Prešov

SkyWatcher Newton 102/500

SkyWatcher Newton 102/500
----- EBFit result: -----
TminGJD = 2459782.46951
Error (1 sigma): +0.00025/-0.00027 (Bootstrapping), +0.00032/-0.00028 (Prayer bead), +0.00010/-0.00010 (LSM)
Error (95% CI): +0.00052/-0.00052 (Bootstrapping), +0.00045/-0.00046 (Prayer bead)
LSM: chi^2 = 597.5, n_freedom = 96

. . .

New observation 7/23/2022

AC Boo

112

Matúš Kamenec, Prešov

SkyWatcher Newton 102/500

SkyWatcher Newton 102/500
#Observer>Matus Kamenec
#Telescope>SkyWatcher 102/500 / EQ3-2 GoTo
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>30s ISO 800
#Target>AC Boo
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>
#Comment>CCDCiel

----- EBFit result: -----
TminGJD = 2459783.52510
Error (1 sigma): +0.00057/-0.00056 (Bootstrapping), +0.00032/-0.00034 (Prayer bead), +0.00049/-0.00049 (LSM)
Error (95% CI): +0.00116/-0.00106 (Bootstrapping), +0.00066/-0.00078 (Prayer bead)
LSM: chi^2 = 168.9, n_freedom = 76

. . .

New observation 7/22/2022

AC Boo

112

Matúš Kamenec, Prešov

SkyWatcher Newton 102/500

SkyWatcher Newton 102/500
#Observer>Matus Kamenec
#Telescope>SkyWatcher 102/500 / EQ3-2 GoTo
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>30s ISO 800
#Target>AC Boo
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>
#Comment>CCDCiel

----- EBFit result: -----
TminGJD = 2459782.46946
Error (1 sigma): +0.00028/-0.00024 (Bootstrapping), +0.00025/-0.00020 (Prayer bead), +0.00013/-0.00013 (LSM)
Error (95% CI): +0.00049/-0.00049 (Bootstrapping), +0.00035/-0.00032 (Prayer bead)
LSM: chi^2 = 382.4, n_freedom = 96

. . .

New minimum 2/14/2022

AC Boo

112

Sjoerd Dufoer, Brussels - Heliport

Vixen 20cm VMC200L

Vixen 20cm VMC200L

----- EBFit result: -----
Tmin = 2459622.45197
Error (1 sigma): +0.00015/-0.00014 (Bootstrapping), +0.00017/-0.00014 (Prayer bead), +0.00010/-0.00010 (LSM)
Error (95% CI): +0.00031/-0.00031 (Bootstrapping), +0.00027/-0.00023 (Prayer bead)
LSM: chi^2 = 250.0, n_freedom = 114

. . .

New minimum 10/29/2021

AC Boo

112

Sjoerd Dufoer, Brussels - Heliport

Vixen 20cm VMC200L

Vixen 20cm VMC200L

----- EBFit result: -----
Tmin = 2459516.71697
Error (1 sigma): +0.00090/-0.00075 (Bootstrapping), +0.00141/-0.00078 (Prayer bead), +0.00085/-0.00085 (LSM)
Error (95% CI): +0.00639/-0.00127 (Bootstrapping), +0.00435/-0.00131 (Prayer bead)
LSM: chi^2 = 97.6, n_freedom = 47

. . .

New minimum 6/1/2021

AC Boo

112

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459338.37712
Error (1 sigma): +0.00013/-0.00013 (Bootstrapping), +0.00003/-0.00004 (Prayer bead), +0.00005/-0.00005 (LSM)
Error (95% CI): +0.00027/-0.00026 (Bootstrapping), +0.00006/-0.00007 (Prayer bead)
LSM: chi^2 = 693.7, n_freedom = 76

. . .

New minimum 6/1/2021

AC Boo

112

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459338.37741
Error (1 sigma): +0.00015/-0.00014 (Bootstrapping), +0.00007/-0.00006 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00035/-0.00026 (Bootstrapping), +0.00008/-0.00016 (Prayer bead)
LSM: chi^2 = 1011.4, n_freedom = 70

. . .

New minimum 6/1/2021

AC Boo

112

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2459338.37747
Error (1 sigma): +0.00014/-0.00013 (Bootstrapping), +0.00007/-0.00009 (Prayer bead), +0.00005/-0.00005 (LSM)
Error (95% CI): +0.00031/-0.00026 (Bootstrapping), +0.00012/-0.00011 (Prayer bead)
LSM: chi^2 = 810.3, n_freedom = 75

. . .

New minimum 3/22/2021

AC Boo

112

Filip Walter, Štefánik Observatory, Prague, Czech Republic

Skywatcher REF 102/600 + DSLR Canon 1000D

Skywatcher REF 102/600 + DSLR Canon 1000D
V2_C9_90.800.C.2x2.3

----- EBFit result: -----
Tmin = 2458927.59381
Error (1 sigma): +0.00020/-0.00023 (Bootstrapping), +0.00007/-0.00007 (Prayer bead), +0.00016/-0.00016 (LSM)
Error (95% CI): +0.00041/-0.00048 (Bootstrapping), +0.00018/-0.00016 (Prayer bead)
LSM: chi^2 = 38.0, n_freedom = 19

. . .

New observation 3/22/2021

AC Boo

112

Filip Walter, Štefánik Observatory, Prague, Czech Republic

Skywatcher REF 102/600 + DSLR Canon 1000D

Skywatcher REF 102/600 + DSLR Canon 1000D
V2_C9_90.800.C.2x2.3

. . .

New minimum 4/20/2020

AC Boo

112

Nosáľ P., Vígľaš

NWT 150/600 + Canon 20D + MPCC mk.III

NWT 150/600 + Canon 20D + MPCC mk.III

----- EBFit result: -----
Tmin = 2458951.38458
Error (1 sigma): +0.00018/-0.00020 (Bootstrapping), +0.00020/-0.00015 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00036/-0.00038 (Bootstrapping), +0.00023/-0.00021 (Prayer bead)
LSM: chi^2 = 472.4, n_freedom = 56

. . .

New minimum 4/5/2020

AC Boo

112

Roman Ehrenberger, Crow-Observatory Vranová

NWT 150/600 + MII G2-8300

NWT 150/600 + MII G2-8300
----- EBFit result: -----
Tmin = 2458944.51115
Error (1 sigma): +0.00009/-0.00010 (Bootstrapping), +0.00009/-0.00008 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00018/-0.00019 (Bootstrapping), +0.00013/-0.00011 (Prayer bead)
LSM: chi^2 = 9386.6, n_freedom = 285

. . .

New minimum 4/5/2020

AC Boo

112

Roman Ehrenberger, Crow-Observatory Vranová

NWT 150/600 + MII G2-8300

NWT 150/600 + MII G2-8300
----- EBFit result: -----
Tmin = 2458944.33668
Error (1 sigma): +0.00008/-0.00007 (Bootstrapping), +0.00003/-0.00003 (Prayer bead), +0.00003/-0.00003 (LSM)
Error (95% CI): +0.00015/-0.00015 (Bootstrapping), +0.00004/-0.00005 (Prayer bead)
LSM: chi^2 = 1713.2, n_freedom = 205

. . .

New minimum 3/31/2020

AC Boo

112

Dvořák P., Oslavany

Celestron NexStar Evolution 235 mm, f/10, CMOS C2-12000AC

. . .

New observation 3/31/2020

AC Boo

112

Dvořák P., Oslavany

Celestron NexStar Evolution 235 mm, f/10, CMOS C2-12000AC

. . .

New observation 3/27/2020

AC Boo

112

Filip Walter, Štefánik Observatory, Prague, Czech Republic

Skywatcher REF 102/600 + DSLR Canon 1000D

Skywatcher REF 102/600 + DSLR Canon 1000D
V2C9_90.800_C

. . .

New minimum 5/1/2019

AC Boo

112

Roman Ehrenberger, Crow-Observatory Vranová

NWT 150/600 + MII G2-8300

NWT 150/600 + MII G2-8300
----- EBFit result: -----
Tmin = 2458604.39563
Error (1 sigma): +0.00009/-0.00007 (Bootstrapping), +0.00013/-0.00011 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00017/-0.00016 (Bootstrapping), +0.00017/-0.00021 (Prayer bead)
LSM: chi^2 = 588.1, n_freedom = 112

. . .

New minimum 4/19/2019

AC Boo

112

Pokorný P., Česká Lípa

Sonnar LNS 45/180 + Canon 600D

Sonnar LNS 45/180 + Canon 600D

----- EBFit result: -----
Tmin = 2458590.47655
Error (1 sigma): +0.00082/-0.00074 (Bootstrapping), +0.00040/-0.00037 (Prayer bead), +0.00076/-0.00076 (LSM)
Error (95% CI): +0.00157/-0.00149 (Bootstrapping), +0.00059/-0.00080 (Prayer bead)
LSM: chi^2 = 248.2, n_freedom = 238

. . .

New observation 4/11/2019

AC Boo

112

Filip Walter, Štefánik Observatory, Prague, Czech Republic

Skywatcher REF 102/600 + Canon 1000D

Skywatcher REF 102/600 + Canon 1000D
Jasno, v druhé půli přechody oblačnosti.

V2_C9_60.200

. . .

New observation 4/11/2019

AC Boo

112

Filip Walter, Štefánik Observatory, Prague, Czech Republic

Skywatcher REF 102/600 + Canon 1000D

. . .

New minimum 4/11/2019

AC Boo

112

Filip Walter, Štefánik Observatory, Prague, Czech Republic

Skywatcher REF 102/600 + Canon 1000D

Skywatcher REF 102/600 + Canon 1000D
Jasno, po přeložení ztráta pole.

V2_C9_90.800

----- EBFit result: -----
Tmin = 2458578.49160
Error (1 sigma): +0.00021/-0.00021 (Bootstrapping), +0.00021/-0.00012 (Prayer bead), +0.00010/-0.00010 (LSM)
Error (95% CI): +0.00045/-0.00045 (Bootstrapping), +0.00026/-0.00023 (Prayer bead)
LSM: chi^2 = 225.7, n_freedom = 45

. . .

New observation 4/11/2019

AC Boo

112

Filip Walter, Štefánik Observatory, Prague, Czech Republic

Skywatcher REF 102/600 + Canon 1000D

Skywatcher REF 102/600 + Canon 1000D
Jasno, po přeložení ztráta pole.

V2_C9_90.0800

. . .

New minimum 9/19/2018

AC Boo

112

Matúš Kamenec, Prešov

REF SkyWatcher 102/500 Canon 500D

REF SkyWatcher 102/500 Canon 500D
Observatory>Presov
#Observer>Matus Kamenec
#Telescope>SkyWatcher 102/500 / EQ3-2 GoTo
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>30s ISO 1600
#Target>AC Boo
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Ensemble photometry with MuniWin and MCV
#Comment>

----- EBFit result: -----
Tmin = 2458379.35945
Error (1 sigma): +0.00083/-0.00042 (Bootstrapping), +0.00080/-0.00102 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00108/-0.00118 (Bootstrapping), +0.00183/-0.00145 (Prayer bead)
LSM: chi^2 = 1697.9, n_freedom = 63

. . .

New observation 9/19/2018

AC Boo

112

Matúš Kamenec, Prešov

REF SkyWatcher 102/500 Canon 500D

REF SkyWatcher 102/500 Canon 500D
Observatory>Presov
#Observer>Matus Kamenec
#Telescope>SkyWatcher 102/500 / EQ3-2 GoTo
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>30s ISO 1600
#Target>AC Boo
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Ensemble photometry with MuniWin and MCV
#Comment>

----- EBFit result: -----
TminGJD = 2458379.35943
Error (1 sigma): +0.00080/-0.00043 (Bootstrapping), +0.00079/-0.00095 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00106/-0.00133 (Bootstrapping), +0.00131/-0.00148 (Prayer bead)
LSM: chi^2 = 1709.6, n_freedom = 67

. . .

New minimum 10/9/2017

AC Boo

112

Bragagnolo U., Gruppo Astrofili Salese S.M di Sala (Venezia ) ITALIA

Sky-Watcher REF 100/900 + QHY9

Sky-Watcher REF 100/900 + QHY9
----- EBFit result: -----
Tmin = 2457989.36583
Error (1 sigma): +0.00015/-0.00017 (Bootstrapping), +0.00018/-0.00019 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00031/-0.00035 (Bootstrapping), +0.00021/-0.00032 (Prayer bead)
LSM: chi^2 = 3542.2, n_freedom = 184

. . .

New minimum 3/29/2017

AC Boo

112

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 = 2457841.50939
Error (1 sigma): +0.00016/-0.00015 (Bootstrapping), +0.00003/-0.00002 (Prayer bead), +0.00005/-0.00005 (LSM)
Error (95% CI): +0.00032/-0.00029 (Bootstrapping), +0.00005/-0.00005 (Prayer bead)
LSM: chi^2 = 325.0, n_freedom = 33

. . .

New minimum 3/29/2017

AC Boo

112

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 = 2457841.50917
Error (1 sigma): +0.00018/-0.00017 (Bootstrapping), +0.00004/-0.00003 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00037/-0.00031 (Bootstrapping), +0.00007/-0.00004 (Prayer bead)
LSM: chi^2 = 270.3, n_freedom = 32

. . .

New minimum 3/29/2017

AC Boo

112

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 = 2457841.50898
Error (1 sigma): +0.00013/-0.00012 (Bootstrapping), +0.00004/-0.00004 (Prayer bead), +0.00007/-0.00007 (LSM)
Error (95% CI): +0.00030/-0.00026 (Bootstrapping), +0.00007/-0.00005 (Prayer bead)
LSM: chi^2 = 135.5, n_freedom = 32

. . .

New minimum 3/29/2017

AC Boo

112

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 = 2457841.50879
Error (1 sigma): +0.00016/-0.00014 (Bootstrapping), +0.00002/-0.00003 (Prayer bead), +0.00009/-0.00009 (LSM)
Error (95% CI): +0.00032/-0.00029 (Bootstrapping), +0.00004/-0.00005 (Prayer bead)
LSM: chi^2 = 100.8, n_freedom = 35

. . .

New minimum 11/3/2016

AC Boo

112

Massimo Banfi, A25 Nova Milanese Observatory

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG

----- EBFit result: -----
Tmin = 2457513.54842
Error (1 sigma): +0.00025/-0.00011 (Bootstrapping), +0.00028/-0.00026 (Prayer bead), +0.00126/-0.00126 (LSM)
Error (95% CI): +0.00044/-0.00033 (Bootstrapping), +0.00032/-0.00031 (Prayer bead)
LSM: chi^2 = 0.4, n_freedom = 20

. . .

New minimum 11/3/2016

AC Boo

112

Massimo Banfi, A25 Nova Milanese Observatory

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG
----- EBFit result: -----
Tmin = 2457513.37335
Error (1 sigma): +0.00015/-0.00015 (Bootstrapping), +0.00007/-0.00005 (Prayer bead), +0.00078/-0.00078 (LSM)
Error (95% CI): +0.00030/-0.00032 (Bootstrapping), +0.00010/-0.00010 (Prayer bead)
LSM: chi^2 = 2.0, n_freedom = 52

. . .

New minimum 11/3/2016

AC Boo

112

Massimo Banfi, A25 Nova Milanese Observatory

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG
----- EBFit result: -----
Tmin = 2457512.49136
Error (1 sigma): +0.00013/-0.00013 (Bootstrapping), +0.00003/-0.00003 (Prayer bead), +0.00063/-0.00063 (LSM)
Error (95% CI): +0.00028/-0.00027 (Bootstrapping), +0.00006/-0.00005 (Prayer bead)
LSM: chi^2 = 4.2, n_freedom = 68

. . .

New minimum 11/3/2016

AC Boo

112

Massimo Banfi, A25 Nova Milanese Observatory

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG

----- EBFit result: -----
Tmin = 2457490.46400
Error (1 sigma): +0.00010/-0.00010 (Bootstrapping), +0.00005/-0.00005 (Prayer bead), +0.00051/-0.00051 (LSM)
Error (95% CI): +0.00021/-0.00020 (Bootstrapping), +0.00009/-0.00008 (Prayer bead)
LSM: chi^2 = 5.9, n_freedom = 131

. . .

New minimum 11/3/2016

AC Boo

112

Massimo Banfi, A25 Nova Milanese Observatory

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG

----- EBFit result: -----
Tmin = 2457490.46398
Error (1 sigma): +0.00010/-0.00009 (Bootstrapping), +0.00004/-0.00005 (Prayer bead), +0.00052/-0.00052 (LSM)
Error (95% CI): +0.00019/-0.00018 (Bootstrapping), +0.00006/-0.00008 (Prayer bead)
LSM: chi^2 = 4.6, n_freedom = 125

. . .

New minimum 11/3/2016

AC Boo

112

Massimo Banfi, A25 Nova Milanese Observatory

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG

MEADE LX200R, 25cm f/5, CCD SBIG ST7E NABG

----- EBFit result: -----
Tmin = 2457488.52404
Error (1 sigma): +0.00012/-0.00011 (Bootstrapping), +0.00004/-0.00004 (Prayer bead), +0.00050/-0.00050 (LSM)
Error (95% CI): +0.00025/-0.00023 (Bootstrapping), +0.00007/-0.00007 (Prayer bead)
LSM: chi^2 = 5.4, n_freedom = 91

. . .

New minimum 5/1/2016

AC Boo

112

Urbaník M., Čadca

SKY-WATCHER REF 80/600 + MII G1-0300 0.5x red

SKY-WATCHER REF 80/600 + MII G1-0300 0.5x red

----- EBFit result: -----
Tmin = 2457508.43839
Error (1 sigma): +0.00041/-0.00042 (Bootstrapping), +0.00018/-0.00021 (Prayer bead), +0.00030/-0.00030 (LSM)
Error (95% CI): +0.00081/-0.00082 (Bootstrapping), +0.00026/-0.00039 (Prayer bead)
LSM: chi^2 = 206.2, n_freedom = 97

. . .

New observation 5/1/2016

AC Boo

112

Urbaník M., Čadca

SKY-WATCHER REF 80/600 + MII G1-0300 0.5x red

SKY-WATCHER REF 80/600 + MII G1-0300 0.5x red
----- EBFit result: -----
TminGJD = 2457508.43838
Error (1 sigma): +0.00037/-0.00041 (Bootstrapping), +0.00027/-0.00035 (Prayer bead), +0.00030/-0.00030 (LSM)
Error (95% CI): +0.00079/-0.00080 (Bootstrapping), +0.00033/-0.00049 (Prayer bead)
LSM: chi^2 = 227.1, n_freedom = 107

. . .

New minimum 9/26/2015

AC Boo

112

Peter Nosáľ, Vígľaš

EOS 20D + EF 70-200 ( x1,4 extender ) @ 280mm

EOS 20D + EF 70-200 ( x1,4 extender ) @ 280mm

----- EBFit result: -----
Tmin = 2457070.51573
Error (1 sigma): +0.00046/-0.00047 (Bootstrapping), +0.00012/-0.00017 (Prayer bead), +0.00034/-0.00034 (LSM)
Error (95% CI): +0.00094/-0.00093 (Bootstrapping), +0.00061/-0.00028 (Prayer bead)
LSM: chi^2 = 67.8, n_freedom = 46

. . .

New observation 5/22/2015

AC Boo

112

Peter Nosáľ, Vígľaš

EOS 20D + EF 70-200 ( x1,4 extender ) @ 280mm

EOS 20D + EF 70-200 ( x1,4 extender ) @ 280mm
snímané v jednom poli s i Boo

----- EBFit result: -----
TminGJD = 2457070.51601
Error (1 sigma): +0.00033/-0.00035 (Bootstrapping), +0.00015/-0.00018 (Prayer bead), +0.00027/-0.00027 (LSM)
Error (95% CI): +0.00064/-0.00076 (Bootstrapping), +0.00052/-0.00030 (Prayer bead)
LSM: chi^2 = 146.8, n_freedom = 79

. . .

New observation 8/26/2014

AC Boo

112

Urbaník M., Čadca

ED 80/600,0.5x Reductor, G1 0300

. . .

New observation 5/5/2014

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 4000

Celestron 280/1765 + CCD G2 4000
předpověď sekundárního minima JDg=2456775.4277 - 22h15m UT - pozorování před minimem - zataženo

. . .

New observation 5/5/2014

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 4000

Celestron 280/1765 + CCD G2 4000
předpověď sekundárního minima JDg=2456775.4277 - 22h15m UT - pozorování před minimem - zataženo

. . .

New observation 5/5/2014

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 4000

Celestron 280/1765 + CCD G2 4000
předpověď sekundárního minima JDg=2456775.4277 - 22h15m UT - pozorování před minimem - zataženo

. . .

New observation 5/5/2014

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 4000

Celestron 280/1765 + CCD G2 4000
předpověď sekundárního minima JDg=2456775.4277 - 22h15m UT - pozorování před minimem - zataženo

. . .

New observation 5/5/2014

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 4000

Celestron 280/1765 + CCD G2 4000
předpověď sekundárního minima JDg=2456775.4277 - 22h15m UT - pozorování před minimem - zataženo

. . .

New minimum 8/2/2013

AC Boo

112

Urbaník M., Čadca

ED 80/600,0.5x Reductor, G1 0300

ED 80/600,0.5x Reductor, G1 0300

----- EBFit result: -----
Tmin = 2456506.41479
Error (1 sigma): +0.00019/-0.00023 (Bootstrapping), +0.00066/-0.00057 (Prayer bead), +0.00051/-0.00051 (LSM)
Error (95% CI): +0.00039/-0.00047 (Bootstrapping), +0.00125/-0.00071 (Prayer bead)
LSM: chi^2 = 29.8, n_freedom = 152

. . .

New observation 8/2/2013

AC Boo

112

Urbaník M., Čadca

ED 80/600,0.5x Reductor, G1 0300

ED 80/600,0.5x Reductor, G1 0300

----- EBFit result: -----
TminGJD = 2456506.41482
Error (1 sigma): +0.00020/-0.00021 (Bootstrapping), +0.00037/-0.00023 (Prayer bead), +0.00050/-0.00050 (LSM)
Error (95% CI): +0.00038/-0.00047 (Bootstrapping), +0.00063/-0.00027 (Prayer bead)
LSM: chi^2 = 23.6, n_freedom = 138

. . .

New observation 7/19/2013

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď sekundárního minima JDg=2456492.4207 - 22h05m UT (Mo=53164.66942 per.=0.3524413 dne) - minimum nastalo o 1h43m později

. . .

New observation 7/19/2013

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď sekundárního minima JDg=2456492.4207 - 22h05m UT (Mo=53164.66942 per.=0.3524413 dne) - minimum nastalo o 1h43m později

. . .

New minimum 7/19/2013

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
----- EBFit result: -----
Tmin = 2456492.49178
Error (1 sigma): +0.00019/-0.00019 (Bootstrapping), +0.00008/-0.00007 (Prayer bead), +0.00011/-0.00011 (LSM)
Error (95% CI): +0.00039/-0.00036 (Bootstrapping), +0.00009/-0.00015 (Prayer bead)
LSM: chi^2 = 194.9, n_freedom = 54

. . .

New minimum 7/19/2013

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7

----- EBFit result: -----
Tmin = 2456492.49217
Error (1 sigma): +0.00021/-0.00019 (Bootstrapping), +0.00021/-0.00017 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00044/-0.00035 (Bootstrapping), +0.00028/-0.00025 (Prayer bead)
LSM: chi^2 = 83.1, n_freedom = 43

. . .

New observation 4/20/2013

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Newton 254/1200 + CCD G2 402

Newton 254/1200 + CCD G2 402
Předpověď sekundárního minima JDg=2456401.4874 - 23h41m UT (Mo=53164.66942 per.=0.3524413 dne)
pozorován sestup do minima

. . .

New observation 4/20/2013

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Newton 254/1200 + CCD G2 402

Newton 254/1200 + CCD G2 402
Předpověď sekundárního minima JDg=2456401.4874 - 23h41m UT (Mo=53164.66942 per.=0.3524413 dne)
pozorován sestup do minima

. . .

New observation 4/20/2013

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Newton 254/1200 + CCD G2 402

Newton 254/1200 + CCD G2 402
Předpověď sekundárního minima JDg=2456401.4874 - 23h41m UT (Mo=53164.66942 per.=0.3524413 dne)
pozorován sestup do minima

. . .

New observation 5/20/2012

AC Boo

112

Urbaník M., Čadca

ED 80/600, G1 0300

ED 80/600, G1 0300
Montáž narazila do stojanu po prechode meridiánom.....

. . .

New observation 4/28/2009

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď primárního minima JDg=2454946.4335 - 22h24m UT (podle Mo=53164.4932 per.=0.3524413 dne) minimum nastalo o 48 min. později

. . .

New observation 4/28/2009

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď primárního minima JDg=2454946.4335 - 22h24m UT (podle Mo=53164.4932 per.=0.3524413 dne) minimum nastalo o 48 min. později

. . .

New observation 4/28/2009

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď primárního minima JDg=2454946.4335 - 22h24m UT (podle Mo=53164.4932 per.=0.3524413 dne) minimum nastalo o 48 min. později

. . .

New minimum 4/27/2009

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

. . .

New minimum 4/27/2009

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

. . .

New minimum 4/27/2009

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

. . .

New observation 7/24/2008

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď primárního minima JDg = 2454669,4182 - 22h02m UT (podle Mo = 53164.4932 per.= 0,3524413 dne)
minimum nastalo o 41 minut později

. . .

New observation 7/24/2008

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď primárního minima JDg = 2454669,4182 - 22h02m UT (podle Mo = 53164.4932 per.= 0,3524413 dne)
minimum nastalo o 41 minut později

. . .

New observation 7/24/2008

AC Boo

112

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD ST7

Celestron 280/1765 + CCD ST7
předpověď primárního minima JDg = 2454669,4182 - 22h02m UT (podle Mo = 53164.4932 per.= 0,3524413 dne)
minimum nastalo o 41 minut později

. . .

New minimum 7/24/2008