Recent

New observation 7/30/2026

CW Cas

Petra Marková, Astronomický tábor Borovany, 7/29/2026

C1 12000AC, Refraktor 80/600

. . .

New minimum 10/28/2025

CW Cas

Filip Walter, Jan Ryška, 8/27/2025

D3 Skywatcher NWT 200/1000 + CMOS Moravian C2-9000 + no filter

. . .

New observation 10/28/2025

CW Cas

Filip Walter, Jan Ryška, 8/27/2025

D3 Skywatcher NWT 200/1000 + CMOS Moravian C2-9000 + no filter

. . .

New minimum 8/28/2025

CW Cas

Filip Walter, Jan Ryška, 8/27/2025

NWT 200/1000 + CMOS ASI-1600mm pro + CIcRcVB + SA200

. . .

New observation 8/28/2025

CW Cas

Filip Walter, Jan Ryška, 8/27/2025

NWT 200/1000 + CMOS ASI-1600mm pro + CIcRcVB + SA200

. . .

New minimum 12/30/2024

CW Cas

Jens Jacobsen, Egeskov Observatory, 11/20/2024

100 mm Refractor Atik383

. . .

New observation 12/30/2024

CW Cas

Jens Jacobsen, Egeskov Observatory, 11/20/2024

100 mm Refractor Atik383

. . .

New minimum 11/3/2024

CW Cas

Daniel Vimr, Ždánická Hvězdárna a planetárium Oldřich Kotíka, 11/3/2024

GSO RC406 + C2 12000A

. . .

New observation 11/3/2024

CW Cas

Daniel Vimr, Ždánická Hvězdárna a planetárium Oldřich Kotíka, 11/2/2024

GSO RC406 + C2 12000A

. . .

New observation 7/31/2024

SkyWatcher Newton 200/1200
#Observatory>Kolonica
#Observer>Matus Kamenec
#Telescope>SkyWatcher 200/1200 / EQ6
#Instrument>MI G2-8300
#Filter>sloan g
#Exposure>30s
#Target>CW Cas
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
TminGJD = 2460522.48501
Error (1 sigma): +0.00011/-0.00010 (Bootstrapping), +0.00008/-0.00006 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00021/-0.00020 (Bootstrapping), +0.00013/-0.00014 (Prayer bead)
LSM: chi^2 = 126.8, n_freedom = 39

. . .

New observation 10/8/2023

CW Cas

Ehrenberger R., Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

. . .

New observation 10/8/2023

CW Cas

Ehrenberger R., Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

. . .

New observation 10/8/2023

CW Cas

Ehrenberger R., Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

. . .

New minimum 10/8/2023

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2460214.38234
Error (1 sigma): +0.00010/-0.00009 (Bootstrapping), +0.00004/-0.00003 (Prayer bead), +0.00013/-0.00013 (LSM)
Error (95% CI): +0.00027/-0.00020 (Bootstrapping), +0.00005/-0.00011 (Prayer bead)
LSM: chi^2 = 12.6, n_freedom = 13

. . .

New minimum 10/8/2023

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2460214.22410
Error (1 sigma): +0.00014/-0.00016 (Bootstrapping), +0.00003/-0.00003 (Prayer bead), +0.00010/-0.00010 (LSM)
Error (95% CI): +0.00028/-0.00030 (Bootstrapping), +0.00007/-0.00006 (Prayer bead)
LSM: chi^2 = 62.4, n_freedom = 23

. . .

New minimum 10/8/2023

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2460214.38205
Error (1 sigma): +0.00005/-0.00006 (Bootstrapping), +0.00003/-0.00002 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00011/-0.00020 (Bootstrapping), +0.00004/-0.00006 (Prayer bead)
LSM: chi^2 = 2.7, n_freedom = 10

. . .

New minimum 10/8/2023

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2460214.22403
Error (1 sigma): +0.00013/-0.00011 (Bootstrapping), +0.00008/-0.00005 (Prayer bead), +0.00007/-0.00007 (LSM)
Error (95% CI): +0.00024/-0.00022 (Bootstrapping), +0.00011/-0.00010 (Prayer bead)
LSM: chi^2 = 73.6, n_freedom = 26

. . .

New minimum 10/8/2023

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2460214.38200
Error (1 sigma): +0.00009/-0.00015 (Bootstrapping), +0.00012/-0.00013 (Prayer bead), +0.00024/-0.00024 (LSM)
Error (95% CI): +0.00030/-0.00045 (Bootstrapping), +0.00016/-0.00015 (Prayer bead)
LSM: chi^2 = 8.1, n_freedom = 12

. . .

New minimum 10/8/2023

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 300/1200+MII G2-3200

NWT 300/1200+MII G2-3200

----- EBFit result: -----
Tmin = 2460214.22398
Error (1 sigma): +0.00016/-0.00016 (Bootstrapping), +0.00004/-0.00004 (Prayer bead), +0.00011/-0.00011 (LSM)
Error (95% CI): +0.00031/-0.00030 (Bootstrapping), +0.00007/-0.00007 (Prayer bead)
LSM: chi^2 = 60.3, n_freedom = 31

. . .

New minimum 9/29/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
Tmin = 2460214.46507
Error (1 sigma): +0.00004/-0.00004 (Bootstrapping), +0.00003/-0.00003 (Prayer bead), +0.00001/-0.00001 (LSM)
Error (95% CI): +0.00008/-0.00008 (Bootstrapping), +0.00004/-0.00006 (Prayer bead)
LSM: chi^2 = 2691.2, n_freedom = 231

. . .

New minimum 9/29/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
Tmin = 2460214.30775
Error (1 sigma): +0.00007/-0.00006 (Bootstrapping), +0.00011/-0.00010 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00013/-0.00013 (Bootstrapping), +0.00015/-0.00013 (Prayer bead)
LSM: chi^2 = 3156.3, n_freedom = 199

. . .

New observation 9/29/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
2x B.R.N.O! (sekundární + primární)

----- EBFit result: -----
TminGJD = 2460214.30772
Error (1 sigma): +0.00007/-0.00005 (Bootstrapping), +0.00012/-0.00008 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00014/-0.00011 (Bootstrapping), +0.00015/-0.00011 (Prayer bead)
LSM: chi^2 = 3040.8, n_freedom = 196

----- EBFit result: -----
TminGJD = 2460214.46508
Error (1 sigma): +0.00004/-0.00004 (Bootstrapping), +0.00003/-0.00003 (Prayer bead), +0.00001/-0.00001 (LSM)
Error (95% CI): +0.00007/-0.00008 (Bootstrapping), +0.00004/-0.00007 (Prayer bead)
LSM: chi^2 = 2512.4, n_freedom = 226

. . .

New minimum 9/17/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
Tmin = 2460203.46661
Error (1 sigma): +0.00025/-0.00025 (Bootstrapping), +0.00006/-0.00004 (Prayer bead), +0.00010/-0.00010 (LSM)
Error (95% CI): +0.00049/-0.00045 (Bootstrapping), +0.00008/-0.00009 (Prayer bead)
LSM: chi^2 = 281.5, n_freedom = 44

. . .

New minimum 9/17/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
Tmin = 2460203.46666
Error (1 sigma): +0.00012/-0.00012 (Bootstrapping), +0.00004/-0.00005 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00025/-0.00025 (Bootstrapping), +0.00011/-0.00009 (Prayer bead)
LSM: chi^2 = 195.4, n_freedom = 42

. . .

New minimum 9/17/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
Tmin = 2460203.46660
Error (1 sigma): +0.00015/-0.00017 (Bootstrapping), +0.00014/-0.00017 (Prayer bead), +0.00005/-0.00005 (LSM)
Error (95% CI): +0.00032/-0.00031 (Bootstrapping), +0.00019/-0.00022 (Prayer bead)
LSM: chi^2 = 397.3, n_freedom = 43

. . .

New minimum 9/17/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
Tmin = 2460203.46692
Error (1 sigma): +0.00012/-0.00016 (Bootstrapping), +0.00004/-0.00007 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00025/-0.00030 (Bootstrapping), +0.00008/-0.00014 (Prayer bead)
LSM: chi^2 = 266.4, n_freedom = 43

----- EBFit result: -----
Tmin = 2460203.46685
Error (1 sigma): +0.00013/-0.00016 (Bootstrapping), +0.00010/-0.00007 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00027/-0.00031 (Bootstrapping), +0.00015/-0.00018 (Prayer bead)
LSM: chi^2 = 233.6, n_freedom = 38

. . .

New observation 9/17/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
TminGJD = 2460203.46663
Error (1 sigma): +0.00025/-0.00025 (Bootstrapping), +0.00006/-0.00005 (Prayer bead), +0.00010/-0.00010 (LSM)
Error (95% CI): +0.00058/-0.00050 (Bootstrapping), +0.00008/-0.00010 (Prayer bead)
LSM: chi^2 = 267.8, n_freedom = 42

. . .

New observation 9/17/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
TminGJD = 2460203.46660
Error (1 sigma): +0.00014/-0.00017 (Bootstrapping), +0.00014/-0.00016 (Prayer bead), +0.00005/-0.00005 (LSM)
Error (95% CI): +0.00028/-0.00034 (Bootstrapping), +0.00017/-0.00020 (Prayer bead)
LSM: chi^2 = 394.4, n_freedom = 42

. . .

New observation 9/17/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
TminGJD = 2460203.46689
Error (1 sigma): +0.00015/-0.00015 (Bootstrapping), +0.00008/-0.00006 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00029/-0.00027 (Bootstrapping), +0.00010/-0.00014 (Prayer bead)
LSM: chi^2 = 253.8, n_freedom = 41

. . .

New observation 9/16/2023

CW Cas

Stanislav Holý, Ratměřice

GSO NWT 200/1000 + ZWO ASI 178MM

GSO NWT 200/1000 + ZWO ASI 178MM
----- EBFit result: -----
TminGJD = 2460203.46658
Error (1 sigma): +0.00012/-0.00012 (Bootstrapping), +0.00002/-0.00002 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00023/-0.00023 (Bootstrapping), +0.00004/-0.00003 (Prayer bead)
LSM: chi^2 = 144.8, n_freedom = 38

. . .

New observation 8/13/2023

CW Cas

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>CW Cas
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
TminGJD = 2460135.39299
Error (1 sigma): +0.00024/-0.00022 (Bootstrapping), +0.00023/-0.00018 (Prayer bead), +0.00014/-0.00014 (LSM)
Error (95% CI): +0.00062/-0.00042 (Bootstrapping), +0.00043/-0.00033 (Prayer bead)
LSM: chi^2 = 91.0, n_freedom = 22

. . .

New minimum 6/9/2023

CW Cas

Sjoerd Dufoer, Brussels - Heliport

Vixen 20cm VMC200L

Vixen 20cm VMC200L

----- EBFit result: -----
Tmin = 2460104.46548
Error (1 sigma): +0.00012/-0.00012 (Bootstrapping), +0.00003/-0.00004 (Prayer bead), +0.00012/-0.00012 (LSM)
Error (95% CI): +0.00023/-0.00026 (Bootstrapping), +0.00011/-0.00010 (Prayer bead)
LSM: chi^2 = 68.8, n_freedom = 70

. . .

New minimum 3/18/2023

CW Cas

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>CW Cas
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
Tmin = 2459968.47020
Error (1 sigma): +0.00022/-0.00024 (Bootstrapping), +0.00012/-0.00010 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00044/-0.00049 (Bootstrapping), +0.00018/-0.00015 (Prayer bead)
LSM: chi^2 = 2682.6, n_freedom = 97

. . .

New minimum 3/18/2023

CW Cas

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>CW Cas
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
Tmin = 2459968.30894
Error (1 sigma): +0.00011/-0.00012 (Bootstrapping), +0.00004/-0.00005 (Prayer bead), +0.00003/-0.00003 (LSM)
Error (95% CI): +0.00022/-0.00025 (Bootstrapping), +0.00008/-0.00011 (Prayer bead)
LSM: chi^2 = 1242.5, n_freedom = 79

. . .

New observation 3/18/2023

CW Cas

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>CW Cas
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
TminGJD = 2459968.30898
Error (1 sigma): +0.00013/-0.00013 (Bootstrapping), +0.00004/-0.00004 (Prayer bead), +0.00003/-0.00003 (LSM)
Error (95% CI): +0.00023/-0.00025 (Bootstrapping), +0.00007/-0.00007 (Prayer bead)
LSM: chi^2 = 1711.4, n_freedom = 89

. . .

New observation 3/10/2023

CW Cas

Ehrenberger R., Crow-Observatory Vranová

NWT 150/600+MII G2-8300

. . .

New minimum 3/10/2023

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 150/600+MII G2-8300

NWT 150/600+MII G2-8300

----- EBFit result: -----
Tmin = 2459483.48540
Error (1 sigma): +0.00011/-0.00013 (Bootstrapping), +0.00026/-0.00022 (Prayer bead), +0.00005/-0.00005 (LSM)
Error (95% CI): +0.00020/-0.00024 (Bootstrapping), +0.00038/-0.00049 (Prayer bead)
LSM: chi^2 = 547.0, n_freedom = 91

. . .

New minimum 3/10/2023

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 150/600+MII G2-8300

NWT 150/600+MII G2-8300
----- EBFit result: -----
Tmin = 2459483.64394
Error (1 sigma): +0.00021/-0.00019 (Bootstrapping), +0.00016/-0.00015 (Prayer bead), +0.00015/-0.00015 (LSM)
Error (95% CI): +0.00058/-0.00035 (Bootstrapping), +0.00022/-0.00021 (Prayer bead)
LSM: chi^2 = 80.0, n_freedom = 32

. . .

New observation 8/28/2022

CW Cas

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>CW Cas
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
TminGJD = 2459817.33108
Error (1 sigma): +0.00011/-0.00013 (Bootstrapping), +0.00003/-0.00002 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00023/-0.00023 (Bootstrapping), +0.00005/-0.00005 (Prayer bead)
LSM: chi^2 = 1189.7, n_freedom = 94
secondary minimum

. . .

New observation 8/28/2022

CW Cas

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>CW Cas
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Muniwin
#Comment>

----- EBFit result: -----
TminGJD = 2459817.48903
Error (1 sigma): +0.00008/-0.00008 (Bootstrapping), +0.00003/-0.00003 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00016/-0.00015 (Bootstrapping), +0.00007/-0.00004 (Prayer bead)
LSM: chi^2 = 1044.1, n_freedom = 106

. . .

New observation 1/16/2022

CW Cas

Matúš Kamenec, Prešov

SkyWatcher REF 102/500

. . .

New observation 1/16/2022

CW Cas

Matúš Kamenec, Prešov

SkyWatcher REF 102/500

SkyWatcher REF 102/500
Observatory>Presov
#Observer>Matus Kamenec
#Telescope>SkyWatcher 102/500 / EQ3-2 GoTo
#Instrument>Canon EOS 500D
#Filter>V (G converted)
#Exposure>30s ISO 1600
#Target>CW Cas
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>
#Comment>

----- EBFit result: -----
TminGJD = 2459595.24518
Error (1 sigma): +0.00016/-0.00016 (Bootstrapping), +0.00005/-0.00005 (Prayer bead), +0.00015/-0.00015 (LSM)
Error (95% CI): +0.00034/-0.00030 (Bootstrapping), +0.00009/-0.00009 (Prayer bead)
LSM: chi^2 = 171.8, n_freedom = 123

. . .

New observation 1/4/2022

CW Cas

Ehrenberger R., Crow-Observatory Vranová

NWT 150/600+MII G2-8300

. . .

New observation 1/4/2022

CW Cas

Ehrenberger R., Crow-Observatory Vranová

NWT 150/600+MII G2-8300

. . .

New minimum 1/4/2022

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 150/600+MII G2-8300

NWT 150/600+MII G2-8300

----- EBFit result: -----
Tmin = 2459468.49988
Error (1 sigma): +0.00012/-0.00012 (Bootstrapping), +0.00014/-0.00012 (Prayer bead), +0.00003/-0.00003 (LSM)
Error (95% CI): +0.00024/-0.00025 (Bootstrapping), +0.00023/-0.00020 (Prayer bead)
LSM: chi^2 = 2232.7, n_freedom = 141

. . .

New minimum 1/4/2022

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 150/600+MII G2-8300

NWT 150/600+MII G2-8300

----- EBFit result: -----
Tmin = 2459468.33941
Error (1 sigma): +0.00011/-0.00012 (Bootstrapping), +0.00029/-0.00034 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00022/-0.00025 (Bootstrapping), +0.00037/-0.00043 (Prayer bead)
LSM: chi^2 = 4017.8, n_freedom = 139

. . .

New minimum 7/20/2021

CW Cas

Sjoerd Dufoer, Brussels - Heliport

Vixen 20cm VMC200L

Vixen 20cm VMC200L

----- EBFit result: -----
Tmin = 2459415.41035
Error (1 sigma): +0.00036/-0.00039 (Bootstrapping), +0.00034/-0.00037 (Prayer bead), +0.00036/-0.00036 (LSM)
Error (95% CI): +0.00073/-0.00082 (Bootstrapping), +0.00050/-0.00107 (Prayer bead)
LSM: chi^2 = 106.0, n_freedom = 83

. . .

New minimum 10/6/2020

CW Cas

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 = 2459107.55452
Error (1 sigma): +0.00010/-0.00009 (Bootstrapping), +0.00010/-0.00014 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00019/-0.00018 (Bootstrapping), +0.00016/-0.00022 (Prayer bead)
LSM: chi^2 = 415.1, n_freedom = 144

. . .

New minimum 9/17/2020

CW Cas

Ivan Sergey, Polyani, near Molodechno

200mm Newton(HEQ-5)+Canon 350D

200mm Newton(HEQ-5)+Canon 350D

----- EBFit result: -----
Tmin = 2459108.35148
Error (1 sigma): +0.00076/-0.00048 (Bootstrapping), +0.00068/-0.00051 (Prayer bead), +0.00050/-0.00050 (LSM)
Error (95% CI): +0.00144/-0.00108 (Bootstrapping), +0.00129/-0.00063 (Prayer bead)
LSM: chi^2 = 34.5, n_freedom = 33

. . .

New minimum 9/13/2020

CW Cas

Ivan Sergey, Polyani, near Molodechno

200mm Newton(HEQ-5)+Canon 350D

200mm Newton(HEQ-5)+Canon 350D

----- EBFit result: -----
Tmin = 2459105.48107
Error (1 sigma): +0.00041/-0.00032 (Bootstrapping), +0.00033/-0.00040 (Prayer bead), +0.00029/-0.00029 (LSM)
Error (95% CI): +0.00068/-0.00068 (Bootstrapping), +0.00059/-0.00047 (Prayer bead)
LSM: chi^2 = 27.5, n_freedom = 34

. . .

New observation 10/8/2019

CW Cas

Ehrenberger R., Crow-Observatory Vranová

NWT 150/600+MII G2-8300

. . .

New minimum 10/8/2019

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 150/600 + MII G2-8300

NWT 150/600 + MII G2-8300
----- EBFit result: -----
Tmin = 2458764.46343
Error (1 sigma): +0.00011/-0.00010 (Bootstrapping), +0.00008/-0.00007 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00021/-0.00021 (Bootstrapping), +0.00012/-0.00009 (Prayer bead)
LSM: chi^2 = 402.1, n_freedom = 79

. . .

New minimum 10/8/2019

CW Cas

Roman Ehrenberger, Crow-Observatory Vranová

NWT 150/600 + MII G2-8300

NWT 150/600 + MII G2-8300
----- EBFit result: -----
Tmin = 2458764.30358
Error (1 sigma): +0.00008/-0.00007 (Bootstrapping), +0.00008/-0.00007 (Prayer bead), +0.00003/-0.00003 (LSM)
Error (95% CI): +0.00014/-0.00013 (Bootstrapping), +0.00014/-0.00017 (Prayer bead)
LSM: chi^2 = 1376.4, n_freedom = 171

. . .

New minimum 8/6/2019

CW Cas

Kateřina Hoňková, Astronomická expedice v Úpici

NWT 200/800 + C2-12000

NWT 200/800 + C2-12000
Ročník expy: 2019
Pozorovatelé: Vojta Dienstbier
Podmínky: skoro-jasno

----- EBFit result: -----
Tmin = 2458699.41936
Error (1 sigma): +0.00008/-0.00009 (Bootstrapping), +0.00006/-0.00005 (Prayer bead), +0.00009/-0.00009 (LSM)
Error (95% CI): +0.00017/-0.00016 (Bootstrapping), +0.00010/-0.00008 (Prayer bead)
LSM: chi^2 = 232.6, n_freedom = 221

. . .

New observation 8/6/2019

CW Cas

CCD skupina v Úpici, Astronomická expedice v Úpici

NWT 200/800 + C2-12000

NWT 200/800 + C2-12000
Ročník expy: 2019
Pozorovatelé: Vojta Dienstbier
Podmínky: skoro-jasno

. . .

New observation 8/22/2018

CW Cas

Matúš Kamenec, Kolonica

SkyWatcher Newton 150/750

SkyWatcher Newton 150/750
Observatory>Kolonica
#Observer>Matus Kamenec
#Telescope>MASHA - SkyWatcher 150/750 / NEQ-6
#Instrument>Canon EOS 500D
#Filter>Clear
#Exposure>60s ISO 1600
#Target>CW Cas
#Position>
#MainComp>
#Source>
#Magnitude system>
#Time system>JD geocentric
#Reduction>Ensemble photometry with MuniWin and MCV
#Comment>

----- EBFit result: -----
TminGJD = 2458352.34251
Error (1 sigma): +0.00042/-0.00004 (Bootstrapping), +0.00061/-0.00074 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00072/-0.00019 (Bootstrapping), +0.00114/-0.00349 (Prayer bead)
LSM: chi^2 = 286.2, n_freedom = 30

. . .

New minimum 12/16/2017

CW Cas

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 = 2458054.52807
Error (1 sigma): +0.00014/-0.00015 (Bootstrapping), +0.00006/-0.00005 (Prayer bead), +0.00008/-0.00008 (LSM)
Error (95% CI): +0.00028/-0.00029 (Bootstrapping), +0.00013/-0.00007 (Prayer bead)
LSM: chi^2 = 304.5, n_freedom = 90

. . .

New minimum 9/4/2016

CW Cas

Vrašťák M, Klenovec, Slovakia

NWT 150/750+MII G2-1600, pointer 80/400+G1-0300

NWT 150/750+MII G2-1600, pointer 80/400+G1-0300

----- EBFit result: -----
Tmin = 2457613.39442
Error (1 sigma): +0.00020/-0.00024 (Bootstrapping), +0.00070/-0.00096 (Prayer bead), +0.00019/-0.00019 (LSM)
Error (95% CI): +0.00048/-0.00050 (Bootstrapping), +0.00126/-0.00150 (Prayer bead)
LSM: chi^2 = 34.8, n_freedom = 18

. . .

New minimum 9/4/2016

CW Cas

Vrašťák M, Klenovec, Slovakia

NWT 150/750+MII G2-1600, pointer 80/400+G1-0300

NWT 150/750+MII G2-1600, pointer 80/400+G1-0300

----- EBFit result: -----
Tmin = 2457613.39392
Error (1 sigma): +0.00019/-0.00019 (Bootstrapping), +0.00031/-0.00037 (Prayer bead), +0.00016/-0.00016 (LSM)
Error (95% CI): +0.00042/-0.00037 (Bootstrapping), +0.00056/-0.00051 (Prayer bead)
LSM: chi^2 = 28.7, n_freedom = 20

. . .

New minimum 9/4/2016

CW Cas

Vrašťák M, Klenovec, Slovakia

NWT 150/750+MII G2-1600, pointer 80/400+G1-0300

NWT 150/750+MII G2-1600, pointer 80/400+G1-0300

----- EBFit result: -----
Tmin = 2457613.39359
Error (1 sigma): +0.00051/-0.00038 (Bootstrapping), +0.00015/-0.00015 (Prayer bead), +0.00023/-0.00023 (LSM)
Error (95% CI): +0.00093/-0.00073 (Bootstrapping), +0.00054/-0.00033 (Prayer bead)
LSM: chi^2 = 37.0, n_freedom = 19

. . .

New observation 9/22/2015

CW Cas

Jan Mazanec, Hvězdárna Vyškov

ORION NWT 500/2000 + MII G2 402

. . .

New observation 9/22/2015

CW Cas

Jan Mazanec, Hvězdárna Vyškov

ORION NWT 500/2000 + MII G2 402

. . .

New observation 9/22/2015

CW Cas

Jan Mazanec, Hvězdárna Vyškov

ORION NWT 500/2000 + MII G2 402

. . .

New observation 9/22/2015

CW Cas

Jan Mazanec, Hvězdárna Vyškov

ORION NWT 500/2000 + MII G2 402

. . .

New minimum 8/30/2015

CW Cas

Jan Mazanec, Hvězdárna Vyškov

ORION NWT 500/2000 + MII G2 402

ORION NWT 500/2000 + MII G2 402

----- EBFit result: -----
Tmin = 2457264.40414
Error (1 sigma): +0.00010/-0.00011 (Bootstrapping), +0.00004/-0.00005 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00020/-0.00021 (Bootstrapping), +0.00008/-0.00007 (Prayer bead)
LSM: chi^2 = 327.0, n_freedom = 42

. . .

New minimum 8/30/2015

CW Cas

Jan Mazanec, Hvězdárna Vyškov

ORION NWT 500/2000 + MII G2 402

ORION NWT 500/2000 + MII G2 402

----- EBFit result: -----
Tmin = 2457264.40388
Error (1 sigma): +0.00010/-0.00010 (Bootstrapping), +0.00004/-0.00004 (Prayer bead), +0.00006/-0.00006 (LSM)
Error (95% CI): +0.00021/-0.00021 (Bootstrapping), +0.00006/-0.00006 (Prayer bead)
LSM: chi^2 = 165.1, n_freedom = 45

. . .

New minimum 8/30/2015

CW Cas

Jan Mazanec, Hvězdárna Vyškov

ORION NWT 500/2000 + MII G2 402

ORION NWT 500/2000 + MII G2 402

----- EBFit result: -----
Tmin = 2457264.40428
Error (1 sigma): +0.00023/-0.00017 (Bootstrapping), +0.00017/-0.00018 (Prayer bead), +0.00012/-0.00012 (LSM)
Error (95% CI): +0.00056/-0.00042 (Bootstrapping), +0.00025/-0.00041 (Prayer bead)
LSM: chi^2 = 78.0, n_freedom = 34

. . .

New minimum 8/30/2015

CW Cas

Jan Mazanec, Hvězdárna Vyškov

ORION NWT 500/2000 + MII G2 402

ORION NWT 500/2000 + MII G2 402

----- EBFit result: -----
Tmin = 2457264.40501
Error (1 sigma): +0.00021/-0.00022 (Bootstrapping), +0.00011/-0.00008 (Prayer bead), +0.00025/-0.00025 (LSM)
Error (95% CI): +0.00041/-0.00040 (Bootstrapping), +0.00016/-0.00013 (Prayer bead)
LSM: chi^2 = 29.2, n_freedom = 38

. . .

New minimum 12/20/2014

CW Cas

M. Magris, Opicina, Trieste, IT

Schmidt-Newton 0.25m F/4, CCD MX 716

Schmidt-Newton 0.25m F/4, CCD MX 716
----- EBFit result: -----
Tmin = 2457003.57941
Error (1 sigma): +0.00030/-0.00026 (Bootstrapping), +0.00012/-0.00007 (Prayer bead), +0.00013/-0.00013 (LSM)
Error (95% CI): +0.00089/-0.00047 (Bootstrapping), +0.00018/-0.00008 (Prayer bead)
LSM: chi^2 = 32.0, n_freedom = 17

. . .

New minimum 7/16/2014

CW Cas

M. Magris, Opicina, Trieste, IT

Schmidt-Newton 0.25m F/4, CCD MX 716

Schmidt-Newton 0.25m F/4, CCD MX 716

----- EBFit result: -----
Tmin = 2456854.51282
Error (1 sigma): +0.00039/-0.00045 (Bootstrapping), +0.00032/-0.00033 (Prayer bead), +0.00007/-0.00007 (LSM)
Error (95% CI): +0.00077/-0.00089 (Bootstrapping), +0.00047/-0.00058 (Prayer bead)
LSM: chi^2 = 3198.9, n_freedom = 143

. . .

New minimum 12/20/2012

CW Cas

M. Magris, Ostello scout alpe adria, Campo sacro,Trieste

Meade lx 200 EMC 12 - Stalight Express mx 716 CCD

Meade lx 200 EMC 12 - Stalight Express mx 716 CCD
2x2 binn, exp 90 sec

----- EBFit result: -----
Tmin = 2456280.41067
Error (1 sigma): +0.00065/-0.00083 (Bootstrapping), +0.00032/-0.00053 (Prayer bead), +0.00056/-0.00056 (LSM)
Error (95% CI): +0.00143/-0.00182 (Bootstrapping), +0.00065/-0.00079 (Prayer bead)
LSM: chi^2 = 101.0, n_freedom = 51

. . .

New minimum 10/2/2011