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PI / Source Observation Overview


This table lists all sources observed by the EHT at 230 GHz, along with the corresponding year, PI, and author information. For details such as u-v coverage, data path, and specific calibration status, please use the query system available on the Home page to search the full data summary. If you see 🤔 in the table, it means that the PI has not yet been assigned to the data.


Calibration Status :
Fully Calibrated
Minor Issue
Major Issue
Uncalibrated
Source 2017 2018 2021 2022 2023 2024 2025
Sgr A*
PI: Doeleman

Observed:

Calibrated:
PI: Doeleman

Observed:

Calibrated:
PI: Doeleman

Observed:

Calibrated:
PI: Bower

Observed:

Calibrated:
PI: Bower

Observed:

Calibrated:
PI: Moriyama

Observed:

Calibrated:
PI: Nagai

Observed:

Calibrated:
M87
PI: Doeleman

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Doeleman

Observed:

Calibrated:
PI: Bower

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Dahale

Observed:

Calibrated:
PI: Nagai

Observed:

Calibrated:
3C 273
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Savolainen

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
3C 279
PI: Krichbaum

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
OJ 287
PI: JL Gomez

Observed:

Calibrated:
PI: JL Gomez

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: JL Gomez

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
Cen A
PI: C Müller

Observed:

Calibrated:
PI: C Müller

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Wielgus

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1924-2914
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
NRAO 530
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
1749+096
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
1055+018
PI: Alberdi/Ros

Observed:

Calibrated:
PI: Alberdi/Ros

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
BL Lac
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: DW Kim

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
3C 84
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Paraschos

Observed:

Calibrated:
PI: Paraschos

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
3C 454.3
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Traianou

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
CTA 102
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J0132-1654
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J0006-0623
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
NGC 1052
PI: Kadler

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
Cyg X-3
PI: XRB

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
Mrk 501
PI: 🤔

Observed:

Calibrated:
PI: Koyama

Observed:

Calibrated:
PI: ?

Observed:

Calibrated:
PI: Koyama

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
1510-089
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: MacDonald

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
NGC 4261
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Nagar

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
Cyg A
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Kino

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1555+1111
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Eppel

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1743-0350
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
1313-333
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
3C 345
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
NGC 315
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Park

Observed:

Calibrated:
3C 120
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: ?

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Hada

Observed:

Calibrated:
VXSGR
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Commission

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
WHYA
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Commission

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
VYCMA
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
RLEO
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
CHICYG
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1337-1257
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J0423-0120/0420-014
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
J0510+1800
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Calibrator

Observed:

Calibrated:
J0725-0054
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J0741+3112
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J0909+0121
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J0956+2515
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J0112+3208
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1014+2301
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
1156+295
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1146+3958
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1159+2914
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1224+0330
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1224+2122
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1225+1253
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1230+2518
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1246-0730
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1336-3357
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1407+2827
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1427+2348
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1504+1029
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1512-0905
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1517-2422
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1549+0237
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1800+7828
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J1820+0711
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J2015+3710
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J2232+1143
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J2253+1608
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
J2257-3627
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
NGC 4278
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
NGC 4374 (M84)
PI: 🤔

Observed:

Calibrated:
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Observed:

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PI: 🤔

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PI: 🤔

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PI: 🤔

Observed:

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PI: Nair

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Calibrated:
PI: Nagar

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Calibrated:
NGC 4594 (Somb)
PI: 🤔

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PI: 🤔

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PI: 🤔

Observed:

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PI: Nair

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PI: 🤔

Observed:

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NGC 5232
PI: 🤔

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PI: 🤔

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PI: 🤔

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PI: 🤔

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PI: 🤔

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PI: 🤔

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NGC 6500
PI: 🤔

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PI: 🤔

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PI: 🤔

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PI: 🤔

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PI: 🤔

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Shadows
PI: 🤔

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PI: 🤔

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PI: 🤔

Observed:

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PI: 🤔

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated:
PI: Nagar

Observed:

Calibrated:
PI: 🤔

Observed:

Calibrated: