Recent

New minimum 8/24/2026

CM Dra

Pavol A. Dubovsky, Hlohovec, 3/18/2024

ZC600 600/2400
#Observatory>Hlohovec
#Observer>DPV + Karol Petrík
#Telescope>ZC600
#Instrument>Atik 383L
#Filter/Exposure>V 30s; I 60s
#Target>CM Dra
#Position>16:34:18.07;+57:10:05.2
#MainComp>16:33:55.63;+57:07:47.0;B=14.617,V=13.995,R=13.780,I=13.575
#Source>APASS
#Magnitude system>ABS
#Time system>JD heliocentric
#Reduction process>Ensemble photometry with IRAF
#Comment>

. . .

New minimum 8/24/2026

CM Dra

Pavol A. Dubovsky, Hlohovec, 3/18/2024

ZC600 600/2400

. . .

New minimum 8/24/2026

CM Dra

Pavol A. Dubovsky, Hlohovec, 4/29/2024

ZC600 600/2400

ZC600 600/2400
#Observatory>Hlohovec
#Observer>DPV + Karol Petrík
#Telescope>ZC600
#Instrument>Atik 383L
#Filter/Exposure>V 60s
#Target>CM Dra
#Position>16:34:18.07;+57:10:05.2
#MainComp>16:33:55.63;+57:07:47.0;B=14.617,V=13.995,R=13.780,I=13.575
#Source>APASS
#Magnitude system>ABS
#Time system>JD heliocentric
#Reduction process>Ensemble photometry with IRAF
#Comment>

. . .

New minimum 3/15/2026

CM Dra

Mikhail Ashchepkau, AMIF, 3/14/2026

M-C 150/1800 + ZWO ASI432MM + GPS

. . .

New observation 3/15/2026

CM Dra

Mikhail Ashchepkau, AMIF, 3/14/2026

M-C 150/1800 + ZWO ASI432MM + GPS

. . .

New minimum 1/16/2025

CM Dra

Sjoerd Dufoer, E-Eye - ODK16, 1/15/2025

OOUK ODK16 - QHY268M

. . .

New observation 1/16/2025

CM Dra

Sjoerd Dufoer, E-Eye - ODK16, 1/15/2025

OOUK ODK16 - QHY268M

. . .

New minimum 9/18/2024

CM Dra

Sjoerd Dufoer, E-Eye - Heliport

40cm ODK

40cm ODK

----- EBFit result: -----
Tmin = 2460571.48463
Error (1 sigma): +0.00012/-0.00014 (Bootstrapping), +0.00006/-0.00007 (Prayer bead), +0.00011/-0.00011 (LSM)
Error (95% CI): +0.00025/-0.00026 (Bootstrapping), +0.00012/-0.00011 (Prayer bead)
LSM: chi^2 = 136.2, n_freedom = 94

. . .

New observation 5/19/2024

CM Dra

Pavol A. Dubovsky, Hlohovec

ZC600 600/2400

. . .

New observation 3/19/2024

CM Dra

Pavol A. Dubovsky, Hlohovec

ZC600 600/2400

. . .

New observation 3/19/2024

CM Dra

Pavol A. Dubovsky, Hlohovec

ZC600 600/2400

. . .

New observation 9/1/2023

CM Dra

Iveta Lamberská, Sitiny, okres Usti nad Orlici

N254/1200 + C2-7000A

N254/1200 + C2-7000A
misto: Sitiny, okr. Usti nad Orlici

----- EBFit result: -----

----- EBFit result: -----

. . .

New observation 3/6/2023

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
#Telescope>C14
#CCD>MII G2-1600
#Observer>DPV
#Filter/Exposure>R 60s
#Target>CM Dra
#Position>16:34:18.07;+57:10:05.2
#MainComp>16:33:55.63;+57:07:47.0;B=14.617,V=13.995,R=13.780,I=13.575
#Source>APASS
#Time system>JD geocentric
#Magnitude system>V-C
#Reduction process>Ensemble photometry with CoLiTecVS
#Comment>

. . .

New observation 10/26/2022

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron SCT 280/1765 + MII G2-4000

Celestron SCT 280/1765 + MII G2-4000
předpověď sekundárního minima JDhel=2459873.2305 - 17h31m UT (Mo=42894.56669 per.= 1.26838965 dne) - minimum nastalo o 5 minut později

. . .

New minimum 10/24/2022

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron SCT 280/1765 + MII G2-4000

Celestron SCT 280/1765 + MII G2-4000

----- EBFit result: -----
Tmin = 2459873.23470
Error (1 sigma): +0.00004/-0.00004 (Bootstrapping), +0.00003/-0.00002 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00008/-0.00008 (Bootstrapping), +0.00006/-0.00003 (Prayer bead)
LSM: chi^2 = 237.3, n_freedom = 55

. . .

New observation 10/3/2022

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron SCT 355/2460 + MII G2-1600

Celestron SCT 355/2460 + MII G2-1600
fázová křivka

. . .

New observation 10/3/2022

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron SCT 355/2460 + MII G2-1600

Celestron SCT 355/2460 + MII G2-1600
fázová křivka

. . .

New observation 7/27/2020

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron SCT 355/2460 + MII G2-1600

Celestron SCT 355/2460 + MII G2-1600
předpověď primárního minima JDhel=2459054.4850 - 23h38m UT (Mo=42893,9325 per.= 1.26838965 dne) - minimum nastalo o 6 minut později

. . .

New observation 7/27/2020

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron SCT 355/2460 + MII G2-1600

Celestron SCT 355/2460 + MII G2-1600
předpověď primárního minima JDhel=2459054.4850 - 23h38m UT (Mo=42893,9325 per.= 1.26838965 dne) - minimum nastalo o 6 minut později

. . .

New minimum 7/27/2020

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron SCT 355/2460 + MII G2-1600

Celestron SCT 355/2460 + MII G2-1600

----- EBFit result: -----
Tmin = 2459054.48900
Error (1 sigma): +0.00004/-0.00005 (Bootstrapping), +0.00005/-0.00002 (Prayer bead), +0.00003/-0.00003 (LSM)
Error (95% CI): +0.00009/-0.00010 (Bootstrapping), +0.00005/-0.00004 (Prayer bead)
LSM: chi^2 = 69.4, n_freedom = 26

. . .

New minimum 7/27/2020

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron SCT 355/2460 + MII G2-1600

Celestron SCT 355/2460 + MII G2-1600

----- EBFit result: -----
Tmin = 2459054.48905
Error (1 sigma): +0.00009/-0.00009 (Bootstrapping), +0.00001/-0.00002 (Prayer bead), +0.00007/-0.00007 (LSM)
Error (95% CI): +0.00017/-0.00017 (Bootstrapping), +0.00003/-0.00004 (Prayer bead)
LSM: chi^2 = 33.2, n_freedom = 25

. . .

New observation 4/26/2019

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron SCT 355/2460 + MII G2-1600

Celestron SCT 355/2460 + MII G2-1600
předpověď primárního minima JDhel=2458591.5228 - 00h32m UT (Mo=42893.9325 per.= 1.26838965 dne) - minimum nastalo o 6 minut později

. . .

New minimum 4/26/2019

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron SCT 355/2460 + MII G2-1600

Celestron SCT 355/2460 + MII G2-1600

----- EBFit result: -----
Tmin = 2458591.52523
Error (1 sigma): +0.00003/-0.00003 (Bootstrapping), +0.00002/-0.00002 (Prayer bead), +0.00001/-0.00001 (LSM)
Error (95% CI): +0.00006/-0.00006 (Bootstrapping), +0.00004/-0.00002 (Prayer bead)
LSM: chi^2 = 310.6, n_freedom = 58

. . .

New observation 6/14/2018

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
#Telescope>C14
#CCD>QHY9
#Observer>DPV
#Filter>Clear
#Exposure>30s
#Target>CM Dra
#Position>16 34 18.07 +57 10 05.2
#MainComp>16:33:55.63;+57:07:47.0;B=14.617,V=13.995,R=13.780,I=13.575
#Source>APASS
#Time system>JD geocentric
#Magnitude system>V-C
#Reduction process>Ensemble photometry with CoLiTecVS
#Note>binning3x3

. . .

New minimum 4/10/2018

CM Dra

Šmelcer L., Hvězdárna Valašské Meziříčí

Celestron SCT 355/2460 + MII G2-1600

Celestron SCT 355/2460 + MII G2-1600

----- EBFit result: -----
Tmin = 2458217.35029
Error (1 sigma): +0.00010/-0.00010 (Bootstrapping), +0.00006/-0.00008 (Prayer bead), +0.00007/-0.00007 (LSM)
Error (95% CI): +0.00019/-0.00019 (Bootstrapping), +0.00010/-0.00011 (Prayer bead)
LSM: chi^2 = 71.0, n_freedom = 31

. . .

New observation 9/6/2017

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
#Telescope>C14 356/3910
#CCD>MII G2-1600
#Observer>DPV
#Filter>Clear
#Exposure>30s
#Target>CM Dra
#Position>16 34 18.07 +57 10 05.2
#MainComp>16:33:55.63;+57:07:47.0;B=14.617,V=13.995,R=13.780,I=13.575
#Source>APASS
#Time system>JD geocentric
#Magnitude system>V-C
#Reduction process>Ensemble photometry with CoLiTecVS and MCV
#Note> with focal reducer 0.7; secondary minimum

----- EBFit result: -----
TminGJD = 2457997.28536
Error (1 sigma): +0.00005/-0.00005 (Bootstrapping), +0.00003/-0.00004 (Prayer bead), +0.00017/-0.00017 (LSM)
Error (95% CI): +0.00009/-0.00009 (Bootstrapping), +0.00008/-0.00006 (Prayer bead)
LSM: chi^2 = 5.9, n_freedom = 68

. . .

New observation 8/4/2017

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 30s; C14
C14 356/3910 + MII G2-1600 + DPV
Images calibrated with OLDAS, Ensemble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457962.40537
Error (1 sigma): +0.00004/-0.00003 (Bootstrapping), +0.00004/-0.00003 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00007/-0.00007 (Bootstrapping), +0.00006/-0.00004 (Prayer bead)
LSM: chi^2 = 449.8, n_freedom = 95

. . .

New observation 4/1/2017

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+V; exp 30s; C14
C14 356/3910 + MII G2-1600 + DPV
Images calibrated with OLDAS, Ensemble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

. . .

New observation 1/31/2017

CM Dra

Pavol A. Dubovsky, AO Kolonica

Ziga CDK20

Ziga CDK20
CCD+V; exp 60s; Ziga binning 2x2 fullframe
Ziga 508/3454 + MII G4-16000 + DPV
Images calibrated with OLDAS; Ensemble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076, B=14.617 V=13.995 R=13.780 I=13.575 (APASS)
JD geocentric, V-C magnitudes

. . .

New observation 1/30/2017

CM Dra

Pavol A. Dubovsky, AO Kolonica

Ziga CDK20

. . .

New observation 1/29/2017

CM Dra

Pavol A. Dubovsky, AO Kolonica

Ziga CDK20

Ziga CDK20
CCD+B; exp 60s; Ziga binning 2x2 fullframe
Ziga 508/3454 + MII G4-16000 + DPV
Images calibrated with OLDAS; Ensemble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076, B=14.617 V=13.995 R=13.780 I=13.575 (APASS)
JD geocentric, V-C magnitudes

. . .

New observation 10/8/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 30s; C14
C14 356/3910 + MII G2-1600 + DPV
Images calibrated with OLDAS, Ensemble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457645.30893
Error (1 sigma): +0.00003/-0.00002 (Bootstrapping), +0.00000/-0.00001 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00005/-0.00005 (Bootstrapping), +0.00002/-0.00001 (Prayer bead)
LSM: chi^2 = 129.3, n_freedom = 67

. . .

New observation 10/8/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 10/8/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 10/8/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 10/8/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+V; exp 30s; C14; secondary minimum
C14 356/3910 + MII G2-1600 + DPV
Images calibrated with OLDAS, Ensemble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457638.33156
Error (1 sigma): +0.00010/-0.00010 (Bootstrapping), +0.00004/-0.00003 (Prayer bead), +0.00008/-0.00008 (LSM)
Error (95% CI): +0.00020/-0.00020 (Bootstrapping), +0.00006/-0.00010 (Prayer bead)
LSM: chi^2 = 110.8, n_freedom = 72

. . .

New observation 10/8/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 10/8/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 10/7/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 10/7/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+V; exp 30s; C14
C14 356/3910 + MII G2-1600 + DPV
Images calibrated with OLDAS, Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457631.35627
Error (1 sigma): +0.00004/-0.00004 (Bootstrapping), +0.00002/-0.00001 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00008/-0.00007 (Bootstrapping), +0.00002/-0.00002 (Prayer bead)
LSM: chi^2 = 118.9, n_freedom = 95

. . .

New observation 10/7/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 11

Celestron 11
CCD+R; exp 30s; C11
C11 280/2800 + MII G2-1600 + DPV
Images calibrated with OLDAS, Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457631.35616
Error (1 sigma): +0.00003/-0.00003 (Bootstrapping), +0.00002/-0.00002 (Prayer bead), +0.00002/-0.00002 (LSM)
Error (95% CI): +0.00006/-0.00007 (Bootstrapping), +0.00003/-0.00004 (Prayer bead)
LSM: chi^2 = 407.3, n_freedom = 108

. . .

New observation 10/6/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+V; exp 30s; C14; secondary minimum
C14 356/3910 + MII G2-1600 + DPV
Images calibrated with OLDAS, Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457629.45270
Error (1 sigma): +0.00005/-0.00005 (Bootstrapping), +0.00001/-0.00001 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00011/-0.00010 (Bootstrapping), +0.00002/-0.00003 (Prayer bead)
LSM: chi^2 = 191.4, n_freedom = 107

. . .

New observation 10/6/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 10/6/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 11

Celestron 11
CCD+R; exp 30s; C11
C11 280/2800 + MII G2-1600 + DPV
Images calibrated with OLDAS, Ensemble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

. . .

New observation 10/6/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 10/6/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 11

. . .

New observation 10/4/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 10/4/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 10/3/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+V; exp 30s; C14; secondary minimum
C14 356/3910 + MII G2-1600 + DPV
Images calibrated with OLDAS, Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457624.37882
Error (1 sigma): +0.00005/-0.00005 (Bootstrapping), +0.00002/-0.00002 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00011/-0.00011 (Bootstrapping), +0.00003/-0.00002 (Prayer bead)
LSM: chi^2 = 167.3, n_freedom = 105

. . .

New observation 8/22/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+V; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

. . .

New observation 8/18/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+V; exp 60s; C14; secondary minimum
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457610.42612
Error (1 sigma): +0.00006/-0.00006 (Bootstrapping), +0.00004/-0.00003 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00012/-0.00011 (Bootstrapping), +0.00006/-0.00004 (Prayer bead)
LSM: chi^2 = 162.7, n_freedom = 61

. . .

New observation 8/18/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

. . .

New observation 8/18/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457603.45107
Error (1 sigma): +0.00004/-0.00004 (Bootstrapping), +0.00005/-0.00005 (Prayer bead), +0.00001/-0.00001 (LSM)
Error (95% CI): +0.00009/-0.00008 (Bootstrapping), +0.00008/-0.00007 (Prayer bead)
LSM: chi^2 = 493.0, n_freedom = 57

. . .

New observation 6/22/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457537.49363
Error (1 sigma): +0.00003/-0.00003 (Bootstrapping), +0.00001/-0.00001 (Prayer bead), +0.00001/-0.00001 (LSM)
Error (95% CI): +0.00007/-0.00006 (Bootstrapping), +0.00002/-0.00003 (Prayer bead)
LSM: chi^2 = 470.5, n_freedom = 58

. . .

New observation 6/22/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457518.46757
Error (1 sigma): +-0.00014/-0.00028 (Bootstrapping), +-0.00002/-0.00039 (Prayer bead), +0.00001/-0.00001 (LSM)
Error (95% CI): +0.00012/-0.00033 (Bootstrapping), +0.00031/-0.00064 (Prayer bead)
LSM: chi^2 = 5962.8, n_freedom = 104

. . .

New observation 4/24/2016

CM Dra

Ladislav Červinka, Mladá Boleslav

NWT 200/1000 + Canon 1000D

NWT 200/1000 + Canon 1000D
üplněk

----- EBFit result: -----
TminGJD = 2457499.44170
Error (1 sigma): +0.00015/-0.00015 (Bootstrapping), +0.00006/-0.00005 (Prayer bead), +0.00016/-0.00016 (LSM)
Error (95% CI): +0.00027/-0.00029 (Bootstrapping), +0.00009/-0.00008 (Prayer bead)
LSM: chi^2 = 15.2, n_freedom = 19

. . .

New minimum 4/24/2016

CM Dra

Ladislav Červinka, Mladá Boleslav

NWT 200/1000 + Canon 1000D

NWT 200/1000 + Canon 1000D
úplněk

----- EBFit result: -----
Tmin = 2457499.44169
Error (1 sigma): +0.00014/-0.00015 (Bootstrapping), +0.00003/-0.00003 (Prayer bead), +0.00016/-0.00016 (LSM)
Error (95% CI): +0.00028/-0.00030 (Bootstrapping), +0.00005/-0.00006 (Prayer bead)
LSM: chi^2 = 21.9, n_freedom = 22

. . .

New observation 3/27/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Ziga CDK20

Ziga CDK20
CCD+R; exp 20s; Ziga binning 2x2 fullframe
Ziga 508/3454 + MII G4-16000 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076, B=14.617 V=13.995 R=13.780 I=13.575 (APASS)
JD geocentric, V-C magnitudes

. . .

New observation 3/27/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Ziga CDK20

Ziga CDK20
CCD+V; exp 30s; Ziga binning 2x2 fullframe
Ziga 508/3454 + MII G4-16000 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076, B=14.617 V=13.995 R=13.780 I=13.575 (APASS)
JD geocentric, V-C magnitudes

. . .

New observation 3/2/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Ziga CDK20

Ziga CDK20
CCD+V; exp 30s; Ziga binning 2x2 fullframe; secondary minimum
Ziga 508/3454 + MII G4-16000 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076, B=14.617 V=13.995 R=13.780 I=13.575 (APASS)
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457445.53431
Error (1 sigma): +0.00006/-0.00006 (Bootstrapping), +0.00001/-0.00001 (Prayer bead), +0.00005/-0.00005 (LSM)
Error (95% CI): +0.00011/-0.00012 (Bootstrapping), +0.00002/-0.00002 (Prayer bead)
LSM: chi^2 = 42.5, n_freedom = 34

. . .

New observation 3/2/2016

CM Dra

Pavol A. Dubovsky, AO Kolonica

Ziga CDK20

Ziga CDK20
CCD+R; exp 30s; Ziga binning 2x2 fullframe; secondary minimum
Ziga 508/3454 + MII G4-16000 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076, B=14.617 V=13.995 R=13.780 I=13.575 (APASS)
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457445.53430
Error (1 sigma): +0.00003/-0.00003 (Bootstrapping), +0.00001/-0.00001 (Prayer bead), +0.00003/-0.00003 (LSM)
Error (95% CI): +0.00006/-0.00006 (Bootstrapping), +0.00001/-0.00001 (Prayer bead)
LSM: chi^2 = 47.7, n_freedom = 35

. . .

New observation 10/23/2015

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457258.44937
Error (1 sigma): +0.00002/-0.00003 (Bootstrapping), +0.00001/-0.00001 (Prayer bead), +0.00001/-0.00001 (LSM)
Error (95% CI): +0.00005/-0.00005 (Bootstrapping), +0.00002/-0.00002 (Prayer bead)
LSM: chi^2 = 182.1, n_freedom = 45

. . .

New observation 7/7/2015

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457206.44427
Error (1 sigma): +0.00002/-0.00002 (Bootstrapping), +0.00001/-0.00001 (Prayer bead), +0.00001/-0.00001 (LSM)
Error (95% CI): +0.00004/-0.00005 (Bootstrapping), +0.00002/-0.00002 (Prayer bead)
LSM: chi^2 = 227.1, n_freedom = 62

. . .

New observation 2/12/2015

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2457065.65326
Error (1 sigma): +0.00004/-0.00003 (Bootstrapping), +0.00006/-0.00006 (Prayer bead), +0.00001/-0.00001 (LSM)
Error (95% CI): +0.00008/-0.00006 (Bootstrapping), +0.00008/-0.00008 (Prayer bead)
LSM: chi^2 = 403.7, n_freedom = 56

. . .

New observation 8/26/2014

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 4000

Celestron 280/1765 + CCD G2 4000
předpověď primárního minima JDg=2456894.4181 - 22h02m UT (Mo=42893.9325 per.=1.26838965 dne) - minimum nastalo o 4m58s později

. . .

New observation 8/26/2014

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 4000

Celestron 280/1765 + CCD G2 4000
předpověď primárního minima JDg=2456894.4181 - 22h02m UT (Mo=42893.9325 per.=1.26838965 dne) - minimum nastalo o 4m58s později

. . .

New minimum 8/26/2014

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 4000

Celestron 280/1765 + CCD G2 4000

----- EBFit result: -----
Tmin = 2456894.42151
Error (1 sigma): +0.00010/-0.00013 (Bootstrapping), +0.00012/-0.00012 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00020/-0.00043 (Bootstrapping), +0.00028/-0.00020 (Prayer bead)
LSM: chi^2 = 285.7, n_freedom = 32

. . .

New minimum 8/26/2014

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 280/1765 + CCD G2 4000

Celestron 280/1765 + CCD G2 4000
----- EBFit result: -----
Tmin = 2456894.42138
Error (1 sigma): +0.00034/-0.00012 (Bootstrapping), +0.00019/-0.00015 (Prayer bead), +0.00011/-0.00011 (LSM)
Error (95% CI): +0.00090/-0.00027 (Bootstrapping), +0.00057/-0.00024 (Prayer bead)
LSM: chi^2 = 115.6, n_freedom = 28

. . .

New observation 6/25/2014

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2456823.38994
Error (1 sigma): +0.00003/-0.00003 (Bootstrapping), +0.00001/-0.00001 (Prayer bead), +0.00001/-0.00001 (LSM)
Error (95% CI): +0.00006/-0.00006 (Bootstrapping), +0.00002/-0.00002 (Prayer bead)
LSM: chi^2 = 177.7, n_freedom = 40

. . .

New observation 11/11/2013

CM Dra

Ladislav Šmelcer, Hvězdárna Valašské Meziříčí

Celestron 355/2460mm + CCD G2 1600

Celestron 355/2460mm + CCD G2 1600
předpověď primárního minima JDg=2456605.2259 - 17h25m UT (Mo=42893.9325 per.= 1.26838965 dne) - minimum nastalo o 5min později

. . .

New observation 7/31/2013

CM Dra

Liška J., LFO, Wien

Ritchey-Chretien (1520/12500 mm f/6), SBIG ST-10XME

Ritchey-Chretien (1520/12500 mm f/6), SBIG ST-10XME
exp 60s, 2bin

. . .

New observation 7/29/2013

CM Dra

Liška J., LFO, Wien

Ritchey-Chretien (1520/12500 mm f/6), SBIG ST-10XME

Ritchey-Chretien (1520/12500 mm f/6), SBIG ST-10XME
exp 10s, 60s, 2bin

. . .

New observation 7/15/2013

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2456478.38793
Error (1 sigma): +0.00006/-0.00007 (Bootstrapping), +0.00005/-0.00007 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00012/-0.00014 (Bootstrapping), +0.00010/-0.00009 (Prayer bead)
LSM: chi^2 = 139.7, n_freedom = 52

. . .

New observation 7/15/2013

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14; secondary minimum
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2456476.48461
Error (1 sigma): +0.00003/-0.00003 (Bootstrapping), +0.00002/-0.00003 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00006/-0.00007 (Bootstrapping), +0.00006/-0.00004 (Prayer bead)
LSM: chi^2 = 42.1, n_freedom = 62

. . .

New observation 3/7/2013

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2456356.62249
Error (1 sigma): +-0.00007/-0.00014 (Bootstrapping), +-0.00003/-0.00017 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +-0.00003/-0.00016 (Bootstrapping), +0.00007/-0.00023 (Prayer bead)
LSM: chi^2 = 47.6, n_freedom = 40

. . .

New observation 3/2/2013

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
CCD+R; exp 60s; C14
C14 356/3910 + MII G2-1600 + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2456351.54910
Error (1 sigma): +0.00003/-0.00003 (Bootstrapping), +0.00002/-0.00002 (Prayer bead), +0.00004/-0.00004 (LSM)
Error (95% CI): +0.00006/-0.00007 (Bootstrapping), +0.00003/-0.00003 (Prayer bead)
LSM: chi^2 = 32.1, n_freedom = 52

. . .

New observation 9/29/2012

CM Dra

Pavol A. Dubovsky, AO Kolonica

VNT RL 1000/9000

VNT RL 1000/9000
CCD+R; exp 30s
VNT 1000/9000 + FLI PL1001E in Cassegrain focus + DPV
Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart
JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2456199.34412
Error (1 sigma): +0.00003/-0.00003 (Bootstrapping), +0.00004/-0.00004 (Prayer bead), +0.00015/-0.00015 (LSM)
Error (95% CI): +0.00006/-0.00007 (Bootstrapping), +0.00005/-0.00006 (Prayer bead)
LSM: chi^2 = 4.7, n_freedom = 110

. . .

New observation 6/1/2012

CM Dra

Pavol A. Dubovsky, AO Kolonica

Celestron 14

Celestron 14
TminHJD = 2456079.4785 +/- 0.0001 ; secondary minimum

CCD+R; exp 60s

C14 356/3910 + MII G2-1600 + DPV

Ensamble photometry with C-Munipack and MCV, mean comparison = GSC 3881-1076 V=13.96 B-V=0.29 (NOMAD), check#3 on the chart

JD geocentric, V-C magnitudes

----- EBFit result: -----
TminGJD = 2456079.47690
Error (1 sigma): +0.00009/-0.00009 (Bootstrapping), +0.00020/-0.00016 (Prayer bead), +0.00015/-0.00015 (LSM)
Error (95% CI): +0.00018/-0.00019 (Bootstrapping), +0.00026/-0.00021 (Prayer bead)
LSM: chi^2 = 39.6, n_freedom = 102

. . .

New observation 4/27/2010

CM Dra

Pavol A. Dubovsky, AO Kolonica

PÚPAVA RL 280/1500

PÚPAVA RL 280/1500
TminHJD = 2455311.4703 +/- 0.0001

CCD+Clear; exp 8s;

Pupava 280/1500 + Meade DSI Pro II + DPV

Comp = GSC 2534-0313

JD geocentric, V-C magnitudes

. . .

New observation 3/12/2010

CM Dra

Pavol A. Dubovsky, AO Kolonica

HUGO RL 265/1360

HUGO RL 265/1360
TminHJD = 2455264.5398 +/- 0.0001

CCD+CV; exp 10s;

Hugo 265/1360mm + Meade DSI Pro + DPV

Comp= TYC3881-00421-1, V=10.08, B-V=1.12

JD geocentric, V-C magnitudes

. . .

New observation 9/29/2009

CM Dra

Pavol A. Dubovsky, AO Kolonica

PÚPAVA RL 280/1500

PÚPAVA RL 280/1500
TminHJD = 2455100.2822 +/- 0.0001; secondary minimum

CCD+R; exp 30s;

Pupava 280/1500 + Starlight Express SXVF-H9 + DPV

Comp: TYC3081-01028-1, V=11.35, B-V=0.88 (Henden)

JD geocentric, V-C magnitudes

. . .

New observation 9/22/2009

CM Dra

Pavol A. Dubovsky, AO Kolonica

HUGO RL 265/1360

HUGO RL 265/1360
TminHJD = 2455093.3070 +/- 0.0001

CCD+CV; exp 10s;

Hugo 265/1360mm + Meade DSI Pro + DPV

Comp= TYC3881-00421-1, V=10.08, B-V=1.12

JD geocentric, V-C magnitudes

. . .

New observation 8/13/2009

CM Dra

Pavol A. Dubovsky, AO Kolonica

HUGO RL 265/1360

HUGO RL 265/1360
TminHJD = 2455051.4502 +/- 0.0001

CCD+CV; exp 10s;

Hugo 265/1360mm + Meade + DPV

Comp= TYC3881-00421-1, V=10.08, B-V=1.12

JD geocentric, V-C magnitudes

. . .

New observation 4/15/2009

CM Dra

Pavol A. Dubovsky, AO Kolonica

Hugo RL 265/1360

Hugo RL 265/1360
CCD+CV; exp 20s;

Hugo 265/1360mm + Meade DSI Pro + DPV

Comp= GSC 3881-1146

JD geocentric, V-C magnitudes

. . .

New observation 7/17/2008

CM Dra

Pavol A. Dubovsky, AO Kolonica

Hugo RL 265/1360

Hugo RL 265/1360
CCD+CV; exp 20s;

Hugo 265/1360mm + Meade + DPV

JD geocentric, V-C magnitudes

. . .

New observation 6/5/2008

CM Dra

Pavol A. Dubovsky, AO Kolonica

Hugo RL 265/1360

Hugo RL 265/1360
TminHJD = 2454621.4660 +/- 0.0001

CCD+CV; exp 20s;

Hugo 265/1360mm + Meade + DPV

JD geocentric, V-C magnitudes

. . .

New observation 1/30/2008

CM Dra

Pavol A. Dubovsky, AO Kolonica

HUGO RL 265/1360

HUGO RL 265/1360
CCD+V; exp 20s;

Hugo 265/1360mm + Meade + DPV

Interrumped by clouds

. . .

New observation 1/22/2008

CM Dra

Luboš Brát, ALTAN.Observatory

RF Vixen GP 80/910mm + ST-8

RF Vixen GP 80/910mm + ST-8
TminHJD=2453386.6867 +/- 0.0001
CCD+Clear

. . .

New observation 1/21/2008

CM Dra

Pavol A. Dubovsky, AO Kolonica

HUGO RL 265/1360

HUGO RL 265/1360
TminHJD = 2454309.4420 +/- 0.0002

CCD+V; exp 20s;

Hugo + Meade DSI Pro + DPV

. . .

New observation 1/21/2008

CM Dra

Pavol A. Dubovsky, AO Kolonica

HUGO RL 265/1360

HUGO RL 265/1360
TminHJD = 2453997.4177 +/- 0.0005

CCD+Clear; exp 30s

Hugo + Meade DSI Pro + DPV

. . .

New observation 1/21/2008

CM Dra

Pavol A. Dubovsky, AO Kolonica

HUGO RL 265/1360

HUGO RL 265/1360
TminHJD = 2454191.4819 +/- 0.0001

CCD+V; exp 30s;

Hugo 256/1360 mm + Meade DSI Pro + DPV

. . .

New observation 1/21/2008

CM Dra

Pavol A. Dubovsky, AO Kolonica

HUGO RL 265/1360

HUGO RL 265/1360
TminHJD = 2454020.2491 +/- 0.0001

CCD+V; exp 30s

Hugo 265/1360mm + Meade DSI Pro + DPV

. . .

New minimum 5/29/2007

CM Dra

Radek Kocián, HaP J.Palisy Ostrava

Meade 305/3050 LX200GPS + SBIG ST-8XME + R

Meade 305/3050 LX200GPS + SBIG ST-8XME + R
Z počátku mléčný zákal, postupně vyjasnění s přecházející oblačností, fáze Měsíce 25 %.
Omylem použito červeného fotografického filtru.

. . .

New star 6/1/1996

CM Dra

admin

RA: 16h 34m 20.33s, DE: +57° 09' 44.39", MAG (max): 12.870 (V)

. . .