David's Astronomy Pages Images - Session 1341 (2025-07-11)

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Session Notes

AT 2023acib - Type YSO? Transient AT 2024wys - CV Type Transient AT 2025kej - CV Type Transient  (non-detection)     SN 2024aeey - Type Ia Supernova     UGC 10058 - Spiral Galaxy with Type II Supernova 2025gvs UGC 12793 - Spiral Galaxy with Type Ia Supernova 2025kjx (non-detection)     Variable Stars (photometric monitoring) - T CrB, BL Lac, Tabby's Star (KIC 8462852)         Nearby Stars (astrometric monitoring) - None

- Short session (2.9 hr).  Short summer night. Clear skies     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature : 15°C (min) - CCD Temperature: -5°/-10°C - Notes from 2025-07-11 >>     -

Observing Result

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AT 2023acib - Type YSO? Transient

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AT 2024wys - CV Type Transient

AT 2024wys (Sagittarius) AT 2024wys (Type: CV) discovered 2024-09-26.821 UT by Gaia Alias: Gaia24csp Alerting magnitude 16.26 (G-Gaia Filter) vs Historic Magnitude 14.70 +/- 0.23 SD 1.6 mag dimming in erratic red source  ( TNS 2024wys | Gaia24csp )

AT 2024wys - 2025-07-11 (T+288.2d) Image below (2025-07-11.997) was taken 288.2 days after discovery of 2024wys Position of earlier transient (faint, brightening slightly ?) is shown by white cross-hairs Measured Magnitude +15.61 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-07-11 23:57 UT (#1341029-31) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024wys on Transients 2024 Page >>

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AT 2025kej - CV Type Transient  (non-detection)

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SN 2024aeey - Type Ia Supernova

SN 2024aeey (Draco) SN 2024aeey (Type: Ia) discovered 2024-12-15.090 UT by Gaia Alias: Gaia24dri, GOTO25fy, ATLAS25ake Discovery Magnitude 15.56 (G-Gaia Filter) Candidate SN near PanSTARRS galaxy  ( TNS 2024aeey | Gaia24dri )

SN 2024aeey - 2025-07-11 (T+208.9d) Image below (2025-07-11.987) was taken 208.9 days after discovery of 2024aeey Position of earlier supernova (very faint / barely visible) is shown by white cross-hairs Estimated Magnitude +18.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-07-11 23:44 UT (#1341025-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2024aeey - Detail 2025-07-11 (T+208.9d) Position of earlier supernova (very faint) is shown by white cross-hairs

Annotated CCD Image (150% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-07-11 23:44 UT (#1341025-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2024aeey - Earlier Image, 2024-12-24 (T+9.7d) Image below (2024-12-24.831) was taken 9.7 days after discovery of 2024aeey Position of reported supernova (distinct) is shown by white cross-hairs  Measured Magnitude +15.62 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-12-24 20:05 UT (#1287045-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024aeey on Supernovae 2024 Page >>

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UGC 10058 - Spiral Galaxy with Type II Supernova 2025gvs

UGC 10058 with SN 2025gvs (Corona Borealis) SN 2025gvs (Type: II) discovered 2025-04-05.502 UT by ATLAS Alias: ATLAS25dpm Discovery magnitude 17.59 (cyan-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 17.7  ( TNS 2025gvs)

UGC 10058 with SN 2025gvs - 2025-07-11 (T+97.5d) Image below (2025-07-11.958) was taken 97.5 days after discovery of 2025gvs Position of reported supernova (faint fading slowly) is shown by white cross-hairs Measured Magnitude +16.85 (Clear Filter)

Annotated CCD Image (175% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-07-11 23:08 UT (#1341006-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 10058 with SN 2025gvs - Earlier Image, 2025-04-10 (T+4.6d) Image below (2025-04-10.069) was taken 4.6 days after discovery of 2025gvs Position of reported supernova (distinct, brightening) is shown by white cross-hairs Measured Magnitude +15.86 (Clear Filter)

Annotated CCD Image (175% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 01:47 UT (#1313110-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025gvs (in UGC 10058) on Supernova 2025 Page >>

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UGC 12793 - Spiral Galaxy with Type Ia Supernova 2025kjx  (non-detection)

UGC 12793 with AT 2025kjx (Pegasus) AT 2025kjx (Type: Ia) discovered 2025-05-13.593 UT by ATLAS using ATLAS Haleakala Telescope Alias: ATLAS25eyh Discovery Magnitude 18.00 (orange-ATLAS Filter vs Prior Non-Detection Limiting Magnitude 19.22 Candidate SN near galaxy IC 1496  ( TNS 2025kjx )

UGC 12793 with SN 2025kjx - 2025-07-12 (T+59.4d) Image below (2025-07-12.010) was taken 59.4 days after discovery of 2025kjx Position of reported supernova (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-07-12 00:24 UT (#1341040-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025kjx (in UGC 12793) on Supernova 2025 Page >>

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