David's Astronomy Pages Images - Session 1285 (2024-12-19)

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Images (S1286)

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Session Notes

AT 2022sru - CV Type Transient  (non-detection) AT 2022xao - Type QSO Transient, QSO B0647+250 AT 2023cuz - Type YSO Transient, UY Aur AT 2023ohc - CV Type Transient  (non-detection) AT 2024aboj - CV Type Transient  (non-detection)     LEDA 867006 - Galaxy with Type Ia Supernova 2024ttf LEDA 1390871 - Galaxy with Type Ia Supernova 2024xxq     UGC 604 - Spiral Galaxy with Type II Supernova 2024advj       - NGC 1832 w/AT2024bqt attempt failed (due to cloud)     Variable Stars (photometric monitoring) - RX And, TT Ari, RZ LMi, BL Lac, FU Ori, GW Ori, NV Ori     Nearby Stars (astrometric monitoring) - DX Cnc

- Attempted All-Night Session (5.0 hr) interrupted by cloud and ended early by forecast cloud     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 1.5°C (min) - CCD Temperature: -25°C - Notes from 2024-12-19 >>     -

Observing Result

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AT 2022sru - CV Type Transient (non-detection)

AT 2022sru (Cassiopeia) AT 2022sru (Type: CV) discovered 2022-08-30.587 UT by MASTER Alias: MASTER OT J031307.71+574703.2 Alerting Magnitude 16.64 (G-Gaia Filter) vs Historic Magnitude 18.02 +/- 0.35 SD  ( TNS 2023csu  )

AT 2022sru - 2024-12-19 (T+842.4d) Image below (2024-12-19.973) was taken 842.4 days after discovery of 2022sru Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.2 (Clear Filter)

Annotated CCD Image (125% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-12-19 23:23 UT (#1285104-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022sru on Transients 2022 Page

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AT 2022xao - Type QSO Transient, QSO B0647+250

AT 2022xao (Gemini) AT 2022xao (Type: QSO) discovered 2022-10-02.836 UT by Gaia Alias: Gaia22eda Alerting Magnitude 16.48 (vs Historic magnitude 15.20) Fading in known blazar QSO B0647+250  ( TNS 2022xao | Gaia22eda)

AT 2022xao - 2024-12-19 (T+809.1d) Image below (2024-12-19.929) was taken 809.1 days after discovery of 2022xao Position of QSO (faint) is shown by white cross-hairs Measured Magnitude +15.98 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-12-19 22:25 UT (#1285074-78) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022xao (QSO B0647+250) on Transients 2022 Page >>

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AT 2023cuz - Type YSO Transient, UY Aur

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AT 2023ohc - CV Type Transient (non-detection)

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AT 2024aboj - CV Type Transient (non-detection)

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LEDA 867006 - Galaxy with Type Ia Supernova 2024ttf  (non-detection)

LEDA 867006 with SN 2024ttf (Cetus) SN 2024ttf (Type: Ia) discovered 2024-08-27.582 UT by PS1 Alias: PS24ihk Discovery Magnitude 17.3 (i-P1 Filter)  ( TNS 2024ttf )

LEDA 867006 with SN 2024ttf - 2024-12-19 (T+114.3d) Image below (2024-12-19.856) was taken 114.3 days after discovery of 2024ttf Position of reported supernova (not distinguishable or no longer visible) is shown by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-12-19 20:38 UT (#1285013-15) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024ttf (in LEDA 867006) on Supernova 2024 Page >>

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LEDA 1390871 - Galaxy with Type Ia Supernova 2024xxq

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UGC 604 - Spiral Galaxy with Type II Supernova 2024advj

UGC 604 with SN 2024advj (Andromeda) SN 2024advj (Type: II) discovered 2024-12-11.191 UT by ATLAS Alias: ATLAS24riq, ZTF24abxpkhb, Gaia24dqw Discovery Magnitude 17.87 (g-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 20.20 Confirmed SN II  (Gaia) Gaia, 2024-12-13 13:08, mag 16.63  ( TNS 2024advj | Gaia24dqw )

UGC 604 with SN 2024advj - 2024-12-20 (T+8.8d) Image below (2024-12-20.035) was taken 8.8 days after discovery of 2024advj Position of earlier SN (faint, but distinct) is shown by white cross-hairs Measured Magnitude +15.58 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-12-20 01:00 UT (#1285141-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024advj (in UGC 604) on Supernova 2024 Page >>

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