Recent

New transit 7/31/2025

Qatar-4 b

143

Antonino Brosio, ABObservatory, 7/30/2025

300 mm F/4 Newtonian Reflector + ATIK 383 L

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New observation 7/31/2025

Qatar-4

143

Antonino Brosio, ABObservatory, 7/30/2025

300 mm F/4 Newtonian Reflector + ATIK 383 L

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New transit 4/18/2025

Qatar-4 b

143

BSU Experimental Astrophysics Research Team - Miya Gagne, Bridgewater State University Observatory, 11/2/2019

14" Edge HD, Apogee Alta U47

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New observation 4/18/2025

Qatar-4

143

BSU Experimental Astrophysics Research Team - Miya Gagne, Bridgewater State University Observatory, 11/2/2019

14" Edge HD, Apogee Alta U47

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New transit 11/4/2024

Qatar-4 b

143

Kryštof Macek, Nemojany, 11/3/2024

Celestron C9.25 .63x reducer, 294MM Pro Optolong Red filter

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New observation 11/4/2024

Qatar-4

143

Kryštof Macek, Nemojany, 11/3/2024

Celestron C9.25 .63x reducer, 294MM Pro Optolong Red filter

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New transit 10/19/2024

Qatar-4 b

143

Yves Jongen, Rasteau Observatory

Planewave CDK 17" & SBIG STXL 11002

Planewave CDK 17" & SBIG STXL 11002
120 sec pics on IR-UV filter.

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New transit 9/19/2024

Qatar-4 b

143

John Collins, Wrexham

10inch SCT @F4 / ASI290m

10inch SCT @F4 / ASI290m
Target approx 50deg from full moon.
Sloan r filter.
4x15sec images per "frame" in track and stack.
Clouds arrived just after transit egress.

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New transit 8/23/2024

Qatar-4 b

143

Matthieu BACHSCHMIDT, Gonachon

C11 f/6.7 + SBIG ST8XME

C11 f/6.7 + SBIG ST8XME
Astrodon BB exo filter, 120s exposure

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New transit 8/13/2024

Qatar-4 b

143

Claudio Lopresti, GAD Observatory - SP

Mak-Newton 180mm F/4 - Sbig ST10xme

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New transit 8/11/2024

Qatar-4 b

143

Alberto García Sánchez, Rio Cofio Observatory

MEADE LX200 S/C 10" + SBIG ST8-XME

MEADE LX200 S/C 10" + SBIG ST8-XME
160 segundos

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New transit 8/2/2024

Qatar-4 b

143

Esteban Reina Lorenz, Masquefa Observatory

SC 250 mm f6,3 + ASI 294 MM Pro

SC 250 mm f6,3 + ASI 294 MM Pro
120 sec.

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New transit 7/15/2024

Qatar-4 b

143

Nikola Antonov, Meshtitsa, Pernik, Bulgaria

250 mm F/4.7 Newtonian, CMOS ASI533MM Pro, Johnson B&V

250 mm F/4.7 Newtonian, CMOS ASI533MM Pro, Johnson B&V
Poor seeing. Noisy data

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New transit 7/14/2024

Qatar-4 b

143

Yves Jongen, Rasteau Observatory

Planewave CDK 17" & SBIG STXL 11002

Planewave CDK 17" & SBIG STXL 11002
180 sec pics on IR-UV filter.

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New transit 1/16/2024

Qatar-4 b

143

Ivo Peretto, MarSEC Marana Space Explorer Center

R-C 14", CCD Moravian G2-1600 MkII

R-C 14", CCD Moravian G2-1600 MkII
Co-obs: Stefano Lora, Giovani Furlato

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New transit 1/4/2024

Qatar-4 b

143

Snaevarr Gudmundsson, Nes Observatory

406 mm LX200 SCT/SBIG STL11k CCD

406 mm LX200 SCT/SBIG STL11k CCD
120 sec, R filter, 2x2 bin. Guiding impacted by cloud near ingress.

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New transit 12/27/2023

Qatar-4 b

143

Giuseppe Marino, Gruppo Astrofili Catanesi

Newton 25cm f/4.8 + coma corrector + SBIG ST-7XME

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New transit 12/26/2023

Qatar-4 b

143

Manfred Raetz, Privatsternwarte Herges-Hallenberg

SCT 280 / 1850 + CCD MI G2-1600

SCT 280 / 1850 + CCD MI G2-1600
filter : Astrodon ExoPlanet-BB (V to IR)

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New transit 12/17/2023

Qatar-4 b

143

Yves Jongen, Rasteau Observatory

Planewave CDK 17" & SBIG STXL 11002

Planewave CDK 17" & SBIG STXL 11002
120 sec pics on IR-UV filter.

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New transit 12/9/2023

Qatar-4 b

143

Snaevarr Gudmundsson, Nes Observatory

406 mm LX200 SCT/SBIG STL11k CCD

406 mm LX200 SCT/SBIG STL11k CCD
120 sec, Meridian flip before ingress.

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New transit 11/27/2023

Qatar-4 b

143

N. Thomas & A. Smith, Lookout Observatory

11" SCT, Hyperstar, ASI 1600

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New transit 11/26/2023

Qatar-4 b

143

N. Thomas & A. Smith, Lookout Observatory

11" SCT, Hyperstar, ASI 1600

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New transit 11/26/2023

Qatar-4 b

143

N. Thomas & A. Smith, Lookout Observatory

11" SCT, Hyperstar, ASI 1600

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New transit 11/26/2023

Qatar-4 b

143

N. Thomas & A. Smith, Lookout Observatory

11" SCT, Hyperstar, ASI 1600

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New transit 11/25/2023

Qatar-4 b

143

N. Thomas & A. Smith, Lookout Observatory

11" SCT, Hyperstar, ASI 1600

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New transit 11/18/2023

Qatar-4 b

143

Claudio Lopresti, GAD Observatory - SP

LX 200 12" - ccd Sbig ST9xe

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New transit 11/18/2023

Qatar-4 b

143

Germán Nieto, Observatory 7 Ager (Lleida)

Newt 200 F/4+KAF8300

Newt 200 F/4+KAF8300
92x240" R filter

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New transit 11/9/2023

Qatar-4 b

143

Penko Jordanov, Dimitrovgrad, Bulgaria

Bresser 150/750, Altair Hipercam 183M Pro TEC, Exos-2-OnStep, Johnson V

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New transit 10/31/2023

Qatar-4 b

143

Nikola Antonov, Meshtitsa, Pernik, Bulgaria

Sky-Watcher Explorer 250PDS F/4.8, CMOS ASI533MM Pro, B&V Photometric Filters

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New transit 10/19/2023

Qatar-4 b

143

Germán Nieto, Observatory 7 Ager (Lleida)

Newt 200 F/4+KAF8300

Newt 200 F/4+KAF8300
199 x 100s Filter V

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New transit 9/30/2023

Qatar-4 b

143

Mark Salisbury, Private Observatory

400mm f6.8, ST10XME, AO8 guider.

400mm f6.8, ST10XME, AO8 guider.
240 second exposure unfiltered with CCD operated at 1x1 binning.

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New transit 9/5/2023

Qatar-4 b

143

Petr Dvořák, MUO Brno, Kraví hora

Newton 600/2780 + G4-16000

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New transit 8/25/2023

Qatar-4 b

143

Samuel Diaz Lopez, AstroCamp (Spain)

NAG 8 + ASI533MM

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New transit 8/25/2023

Qatar-4 b

143

Ramon Naves Nogues, Montcabrer

Lx200 12" ACF Moravian G4-9000

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New transit 8/18/2023

Qatar-4 b

143

Martin Tylšar, Sutiny

WO 72/432, MII C1+5000A

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New transit 8/18/2023

Qatar-4 b

143

Expediční CCD skupina, Sutiny

NWT 200/1000 + MII G2-1600 + Lacerta M-Gen

NWT 200/1000 + MII G2-1600 + Lacerta M-Gen
Expa 23
Pozorovatelé: Vojtěch Dienstbier, Jindřich Jelínek

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New transit 1/27/2023

Qatar-4 b

143

Snaevarr Gudmundsson, Nes Observatory

406 mm LX200 SCT/SBIG STL11k CCD

406 mm LX200 SCT/SBIG STL11k CCD
120 sec, clouded up during end. Airmass corrected, 6 comp. stars.

. . .

New transit 1/25/2023

Qatar-4 b

143

Snaevarr Gudmundsson, Nes Observatory

406 mm LX200 SCT/SBIG STL11k CCD

406 mm LX200 SCT/SBIG STL11k CCD
120 sec

. . .

New transit 12/21/2022

Qatar-4 b

143

CREUX Philippe, Observatoire des Baronnies provencales

T200/800

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New transit 12/1/2022

Qatar-4 b

143

Hubert Boussier, K21

C8 f/D 5.7+ST8XME Ioptron GEM45

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New transit 11/20/2022

Qatar-4 b

143

Yves Jongen, Rasteau Observatory

Plane-Wave CDK 17" & SBIG STXL 11002

Plane-Wave CDK 17" & SBIG STXL 11002
180 sec pics on IR-UV filter.

. . .

New transit 11/20/2022

Qatar-4 b

143

Martin Tylšar, Martin Bartošík, FTP

NWT250/1200,G2-8300

NWT250/1200,G2-8300
90sec,

. . .

New transit 10/25/2022

Qatar-4 b

143

Veli-Pekka Hentunen, Taurus Hill Observatory (A95), Varkaus, Finland

C-14, Paramount MEII, SBIG ST-8XME

C-14, Paramount MEII, SBIG ST-8XME
120 sec exposures, ten comparison stars, temperature -5 C

. . .

New transit 10/15/2022

Qatar-4 b

143

Yves Jongen, Rasteau Observatory

Plane-Wave CDK 17" & SBIG STXL 11002

Plane-Wave CDK 17" & SBIG STXL 11002
180 sec pics on IR-UV filter.

. . .

New transit 9/7/2022

Qatar-4 b

143

Giovanni Calapai, Home Astronomical Observatory

Celestron SCT 280/2800 + Atik 314L+ reducer 0,63x

Celestron SCT 280/2800 + Atik 314L+ reducer 0,63x
Moon phase = 75%

. . .

New transit 8/30/2022

Qatar-4 b

143

David Molina, AnunakiObservatory MPC-Z51

S/C 355mm + CCD ST9xe

S/C 355mm + CCD ST9xe
120",bin 1x1,filter clear

. . .

New transit 8/24/2022

Qatar-4 b

143

Philip Langill, Rothney Astrophysical Observatory https://science.ucalgary.ca/rothney-observatory

0.5m f/1 Baker-Nunn

0.5m f/1 Baker-Nunn
Average conditions. Waning Gibbous Moon. occasional thin clouds.
Note: Qatar-4 is star#1 in attached map.

. . .

New transit 8/9/2022

Qatar-4 b

143

David Molina, AnunakiObservatory MPC-Z51 | Miraflores de la Sierra

S/C 355mm + CCD ST9xe

S/C 355mm + CCD ST9xe
120",bin 1x1,filter clear,4 comparison stars.

. . .

New transit 7/31/2022

Qatar-4 b

143

etienne bertrand, Vaux sur Mer - FRANCE

RC8 - F/8 - Atik314L+

RC8 - F/8 - Atik314L+
RC8 - Jean-Jacques Hillairet Teleskopce

. . .

New transit 7/4/2022

Qatar-4 b

143

Blois Sologne Astronomie, Obsevatory Fontaines en Sologne France

Newton d=300/F1365 QSI683WS

Newton d=300/F1365 QSI683WS
Exposure 180s bining 1X1 filter clear Transit 2h earlier compare to prediction high cloud wawing
Eric MINY

. . .

New transit 4/19/2022

Qatar-4 b

143

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

Newton 410/1710 ccd Audine KAF1600 ME

Newton 410/1710 ccd Audine KAF1600 ME
exposure 120"

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New transit 1/21/2022

Qatar-4 b

143

Dominique DANIEL, La Montjoie - Carpentras FRANCE

C8 SCT 203/1500 ZWO ASI 294 MCS

. . .

New transit 12/28/2021

Qatar-4 b

143

Jacques Michelet, Claix

RC 304mm + QSI-632

. . .

New transit 12/14/2021

Qatar-4 b

143

Yves Jongen, Rasteau Observatory

Plane Wave CDK 17" & SBIG STXL11002

Plane Wave CDK 17" & SBIG STXL11002
120 sec pics on IR-UV filter.

. . .

New transit 11/28/2021

Qatar-4 b

143

Thomas MOLLIER, Observatoire Tomastro

Newton 300 mm, EQ8, ASI1600MMC

Newton 300 mm, EQ8, ASI1600MMC
High clouds present.

. . .

New transit 11/15/2021

Qatar-4 b

143

Jesus Rodriguez, NTO2 Observatorio Pozuelo

RC14 // QHY268M

RC14 // QHY268M
120 sec

. . .

New transit 10/31/2021

Qatar-4 b

143

Snaevarr Gudmundsson, Nes Observatory

406 mm LX200 SCT/SBIG STL11k CCD

406 mm LX200 SCT/SBIG STL11k CCD
120 sec, high altitude clouds in the end. 7 comparison stars.

. . .

New transit 10/17/2021

Qatar-4 b

143

Yves Jongen, Rasteau Observatory

Plane Wave CDK 17" & SBIG STXL11002

Plane Wave CDK 17" & SBIG STXL11002
120 sec pics on IR-UV filter.

. . .

New transit 10/17/2021

Qatar-4 b

143

Giorgio Baj, Observatory M57, cod:MPC K38

Ritchey-Chretien 0.35-m, Sbig STT1603, RVBC (Bessel)

Ritchey-Chretien 0.35-m, Sbig STT1603, RVBC (Bessel)
Exp.180sec good seeing moon 87%

. . .

New transit 10/10/2021

Qatar-4 b

143

SW johny, Backyard

254mm Reflector f4 / ASI174mm

254mm Reflector f4 / ASI174mm
180x1min

. . .

New transit 8/22/2021

Qatar-4 b

143

Paolo Bacci, 104 San Marcello Pistoiese

0.60-m F4 ccd 1024x1024

0.60-m F4 ccd 1024x1024
P.Bacci, M. Maestripieri

. . .

New transit 3/18/2021

Qatar-4 b

143

Ferran Grau Horta, Ca l Ou (MPC-C71)

Meade 16 + FLI PL1001

. . .

New transit 2/21/2021

Qatar-4 b

143

Pere Guerra, Observatori Astronòmic Albanyà

16" Meade ACF F8, 10 Micron GM3000 HPS, Moravian G4-9000

16" Meade ACF F8, 10 Micron GM3000 HPS, Moravian G4-9000
CBB Filter, 2x2 binning, focused observation.

. . .

New transit 2/2/2021

Qatar-4 b

143

Snaevarr Gudmundsson, Nes Observatory

406 mm LX200 SCT/SBIG STL11k CCD

406 mm LX200 SCT/SBIG STL11k CCD
120 sec

. . .

New transit 1/13/2021

Qatar-4 b

143

Jordi Lopesino, Observatori Sant Pere, Mataró

S/C 305 mm

S/C 305 mm
120 s exp filter R

. . .

New transit 12/21/2020

Qatar-4 b

143

Nicholas Dahlke, Johanna Hipp, Annalotta Hipp, Sternwarte Gersbach: https://staernwarten.de/

10 micron GM3000 HPS Mount, CDK 17 reflecting telescope, ZWO ASI 1600mm Pro CMOS camera

. . .

New transit 12/21/2020

Qatar-4 b

143

Nicholas Dahlke, Johanna Hipp, Annalotta Hipp, Sternwarte Gersbach: https://staernwarten.de/

10 micron GM3000 HPS Mount, CDK 17 reflecting telescope, ZWO ASI 1600mm Pro CMOS camera

. . .

New transit 11/22/2020

Qatar-4 b

143

Snaevarr Gudmundsson, Nes Observatory

406 mm LX200 SCT/SBIG STL11k CCD

406 mm LX200 SCT/SBIG STL11k CCD
120 sec, XOP-CBB filter

. . .

New transit 11/21/2020

Qatar-4 b

143

Vicenç Ferrando (AAS), tresmall de estels

RC 0.304 mt SBIG ST8 xme

RC 0.304 mt SBIG ST8 xme
180''

. . .

New transit 11/19/2020

Qatar-4 b

143

Marc Bretton, UAI B10 Baronnies Provençales Observatory

RC 82 cm - FLI PL230

RC 82 cm - FLI PL230
60 sec exposure filter clear no defocus one comparison star

. . .

New transit 11/19/2020

Qatar-4 b

143

Yves Jongen, Rasteau Observatory

Plane Wave CDK 17" & SBIG STXL11002

Plane Wave CDK 17" & SBIG STXL11002
120 sec. pics on IR-UV filter.

. . .

New transit 10/25/2020

Qatar-4 b

143

Snaevarr Gudmundsson, Nes Observatory

406 mm LX200 SCT/SBIG STL11k CCD

406 mm LX200 SCT/SBIG STL11k CCD
XOP-CBB, 150 sec

. . .

New transit 10/3/2020

Qatar-4 b

143

Daniel Bertesteanu, Astroclubul Bucuresti

Skywatcher 130/650+QHY 163 M

Skywatcher 130/650+QHY 163 M
60 sec exposure, bin 1x1, thin clouds, Full Moon

. . .

New transit 9/18/2020

Qatar-4 b

143

Manfred Raetz, Privatsternwarte Herges-Hallenberg

SCT 280 / 1790 + CCD MI G2-1600

. . .

New transit 9/15/2020

Qatar-4 b

143

Yves Jongen, Rasteau Observatory

Plane Wave CDK 17" & SBIG STXL11002

Plane Wave CDK 17" & SBIG STXL11002
120 sec pics on IR-UV filter.
15 minutes early vs. ETD

. . .

New observation 8/30/2020

Qatar-4

143

Vojtěch Školník, Broumov NMO

Sct 200/2000 + Meade DSI

. . .

New observation 8/26/2020

Qatar-4

143

Tommaso Dittadi, Tommaso Dittadi Observatory

RC 10 f/8 camera Moravian G2-1600

RC 10 f/8 camera Moravian G2-1600
Pose 120s

. . .

New transit 8/26/2020

Qatar-4 b

143

Tommaso Dittadi, Tommaso Dittadi Observatory

RC 10 f/8 camera Moravian G2-1600

RC 10 f/8 camera Moravian G2-1600
Pose 120s

. . .

New transit 8/26/2020

Qatar-4 b

143

Vojtěch Školník, Broumov NMO

Sct 200/2000 + Meade DSI

. . .

New transit 8/26/2020

Qatar-4 b

143

jean plazas, Ribot Observatory

C14 F/7+ camera sbig 10xme

C14 F/7+ camera sbig 10xme
exposure 180s
CLS filter

. . .

New transit 8/26/2020

Qatar-4 b

143

Yves Jongen, Rasteau observatory

PlaneWave CDK 17 SBIG STLX11002

PlaneWave CDK 17 SBIG STLX11002
120 sec pics on IR-UV filter.
10 minutes early vs. ETD.

. . .

New transit 8/26/2020

Qatar-4 b

143

JuanJo Salamero, Observatorio astronómico de Guirguillano

SCT 14" + CCD Moravian G4-9000

. . .

New transit 8/26/2020

Qatar-4 b

143

Anaël Wünsche, UAI B10 Baronnies Provençales Observatory

RC 82 cm - CMOS 6200 MM ASI-ZWO

RC 82 cm - CMOS 6200 MM ASI-ZWO
120s exposures. Clear filter. Seeing 2". Photometry defocus. Multicomparison stars. No moon. -15°C Camera temp.

. . .

New transit 8/18/2020

Qatar-4 b

143

Luis Tremosa, Observatorio E Sueño MPC C90

WO 130 f/7 + ccd + AO

. . .

New transit 8/18/2020

Qatar-4 b

143

Luis Tremosa, Observatorio E Sueño MPC C90

WO 130 f/7 + ccd + AO

. . .

New transit 7/30/2020

Qatar-4 b

143

Gianluca Rossi, private telescope

Newton 6" f/4 - Atik 383L+

Newton 6" f/4 - Atik 383L+
200 secs exposures

. . .

New transit 7/28/2020

Qatar-4 b

143

Francois Regembal, HRTobs

RC360 / 10Micron / STX16803 / ACP

RC360 / 10Micron / STX16803 / ACP
bin2 60sec

. . .

New transit 7/10/2020

Qatar-4 b

143

Yves Jongen, Rasteau observatory

PlaneWave CDK 17 SBIG STLX11002

PlaneWave CDK 17 SBIG STLX11002
120 sec pics on IR-UV filter.
1 minute late vs. ETD

. . .

New transit 7/10/2020

Qatar-4 b

143

Marc Bretton, UAI B10 Baronnies Provençales Observatory

RC 82 cm - CMOS 6200 MM ASI-ZWO

RC 82 cm - CMOS 6200 MM ASI-ZWO
120 sec exposure filter clear binning 3x3 no defocus multi comparison stars

. . .

New transit 7/3/2020

Qatar-4 b

143

Gährken Bernd, Bavarian Public Observatory

80cm Cassegrain, ASI1600 no Filter

. . .

New transit 7/2/2020

Qatar-4 b

143

Gährken Bernd, Bavarian Public Observatory

80cm Cassegrain , ATI 314L

. . .

New transit 5/30/2020

Qatar-4 b

143

Ferran Grau Horta, Ca l Ou (MPC-C71)

Meade 16

. . .

New transit 3/11/2020

Qatar-4 b

143

Truman State Observer, Truman State - Lowell

31-inch

. . .

New transit 1/10/2020

Qatar-4 b

143

Yves Jongen, Rasteau observatory

PlaneWave CDK 17 SBIG STLX11002

PlaneWave CDK 17 SBIG STLX11002
120 sec pics on IR-UV filter
8 minutes early vs. ETD

. . .

New transit 12/31/2019

Qatar-4 b

143

Javier Ruiz, Observatorio de Cantabria

RC-0.4m f/6.3, ST8

. . .

New transit 11/14/2019

Qatar-4 b

143

Alberto Tomatis, Alto-Observatory - Canino (VT) Italy

RC 16

. . .