David's Astronomy Pages Images - Session 1291 (2025-01-08)

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Images (S1292)

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Session Notes

29P/Schwassmann-Wachmann - Comet     AT2022uqw - Transient near 2MASX Galaxy AT 2024cva - Transient  (non-detection) AT 2024sje - Type YSO Transient  (near B33) AT 2024wpc - Type AGN Transient in PGC 1875557 AT 2024wqf - Type AGN Transient (4C 27.50) AT 2024aaaj - Type YSO? Transient AT 2024accj - Type AGN Transient AT 2024adzo - Transient  (non-detection) AT 2024aeik - Type CV? Transient  (non-detection) AT 2024aelh - CV Type Transient AT 2024aezd - Transient  (non-detection) AT 2024afou - Type CV? Transient  (non-detection) AT 2024afqn - Type CV? Transient     CGCG 116-017 - Galaxy with Type Ia Supernova 2024aegm IC 1231 - Spiral Galaxy with Type II Supernova 2024aeds IC 1496 - Spiral Galaxy with Type IIn Supernova 2025X LEDA 1846725 - Galaxy with Type II Supernova 2024iss M33 - Spiral Galaxy with EGN Candidate  AT 2024afyi  (non-detection)     NGC 3443 - Spiral Galaxy with Type II Supernova 2024ehs NGC 3521 - Spiral Galaxy with Type Ic Supernova 2024aecx  (non-detection)     SN 2024xqt - Type Ia Supernova SN 2024adhf - Type Ia Supernova SN 2024aeey - Type Ia Supernova     Variable Stars (photometric monitoring) - U And, SY Cnc, YZ Cnc, GK Per, T CrB     Nearby Stars (astrometric monitoring) - HH And (Ross 248), Groombridge 34, CN Leo

- Attempted all night session (11.0 hr). Cold night (-1.5°C).     - 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 2025-01-08 >>     -

Observing Result

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29P/Schwassmann-Wachmann - Comet

29P/Schwassmann-Wachmann - 2025-01-09 (passing through Leo) Sun Distance 6.25 AU Earth Distance 5.49 AU (822.0 million km)		29P/Schwassmann-Wachmann - 2025-01-09 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -10.12 arcsec/hr, Dec 1.22 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-01-09 00:22 UT (#1291168-76) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (125% size, square root scale, cropped) Image details as left
Images of 29P/Schwassmann-Wachmann on Comets 2023 Page >>
Images of 29P/Schwassmann-Wachmann on Comets 2024 Page >>
Images of 29P/Schwassmann-Wachmann on Comets 2025 Page >>

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AT2022uqw - Transient near 2MASX Galaxy (non-detection)

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AT 2024cva - Transient (non-detection)

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AT 2024sje - Type YSO Transient  (near B33)

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AT 2024wpc - Type AGN Transient in PGC 1875557

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AT 2024wqf - Type AGN Transient (4C 27.50)

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AT 2024aaaj - Type YSO? Transient

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AT 2024accj - Type AGN Transient

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AT 2024adzo - Transient (non-detection)

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AT 2024aeik - Type CV? Transient (non-detection)

AT 2024aeik (Orion) AT 2024aeik (Type: CV?) discovered 2024-12-19.807 UT by XOSS Alias: KATS24Y003, TCP J05060907+0838026 Discovery Magnitude 16.32 (Clear Filter) CV candidate classified by XOSS.  ( TNS 2024aeik )

AT 2024aeik - 2025-01-08 (T+20.0d) Image below (2025-01-08.853) was taken 20.0 days after discovery of 2024aeik Position of earlier transient (not visible) is shown by white cross-hairs  Non-Detection Limiting Magnitude +18.6 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-08 20:35 UT (#1291090-94) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024aeik on Transients 2024 Page >>

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AT 2024aelh - CV Type Transient

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AT 2024aezd - Transient (non-detection)

AT 2024aezd (Auriga) AT 2024aezd (Type: unk) discovered 2024-12-23.415 UT by LAST Discovery Magnitude 16.32 (Clear Filter) CV candidate classified by XOSS.  ( TNS 2024aezd )

AT 2024aeik - 2025-01-08 (T+20.0d) Image below (2025-01-08.853) was taken 20.0 days after discovery of 2024aeik Position of earlier transient (not visible) is shown by white cross-hairs  Non-Detection Limiting Magnitude +19.0 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-08 20:59 UT (#1291097-101) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024aezd on Transients 2024 Page >>

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AT 2024afou - Type CV? Transient (non-detection)

AT 2024afou (Cancer) AT 2024afou (Type: CV?) discovered 2024-12-27.903 UT by MASTER Alias: MASTER OT J090508.05+185511.3 Discovery Magnitude 14.3 (Clear Filter) vs Prior Non-Detection Limiting Magnitude 20.2 (Clear Filter)  ( TNS 2024afou )

AT 2024afou - 2025-01-08 (T+12.1d) Image below (2025-01-08.976) was taken 12.1 days after discovery of 2024afou Position of earlier transient (not visible) is shown by white cross-hairs  Non-Detection Limiting Magnitude +19.0 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-08 23:33 UT (#1291152-55) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024afou on Transients 2024 Page >>

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AT 2024afqn - Type CV? Transient

AT 2024afqn (Auriga) AT 2024afqn (Type: CV?) discovered 2024-12-29.682 UT by XOSS Alias: KATS24Y013, TCP J05172240+4831042 Discovery Magnitude 16.03 (Clear Filter) CV candidate classified by XOSS  ( TNS 2024afqn )

AT 2024afqn - 2025-01-08 (T+10.2d) Image below (2025-01-08.883) was taken 10.2 days after discovery of 2024afqn Position of reported transient (very faint) is shown by white cross-hairs  Measured Magnitude +17.32 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-08 21:21 UT (#1291103-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024afqn on Transients 2024 Page >>

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CGCG 116-017 - Galaxy with Type Ia Supernova 2024aegm

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IC 1231 - Spiral Galaxy with Type II Supernova 2024aeds

IC 1231 with SN 2024aeds (Draco) SN 2024aeds (Type: II) discovered 2024-12-16.688 UT by Giancarlo Cortini Discovery Magnitude 18.0 (Clear Filter)  ( TNS 2024aeds )

IC 1231 with SN 2024aeds - 2025-01-09 (T+23.4d) Image below (2025-01-09.106) was taken 23.4 days after discovery of 2024aeds Position of reported supernova (very faint) is shown by white cross-hairs Measured Magnitude +17.34 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-09 02:41 UT (#1291234-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024aeds (in IC 1231) on Supernova 2024 Page >>

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IC 1496 - Spiral Galaxy with Type IIn Supernova 2025X

IC 1496 with SN 2025X (Pisces) SN 2025X (Type: IIn) discovered 2024-12-31.008 UT by Koichi Itagaki Alias: PSN J23305120-0256341, Gaia25aaf Alerting Magnitude 18.49 (G Gaia Filter Candidate SN near galaxy IC 1496  ( TNS 2025X (not found in TNS) | Gaia25aaf )

IC 1496 - Spiral Galaxy with SN 2025X (T+8.8d)

Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-08 19:42 UT (#1291068-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

IC 1496 - Sub Frame ruined by Satellite tracks The bright star like object in left hand side of image is actually a satellite flash

Annotated CCD Image (50% size, square root scale) 180s exposure (single frame), 3x3 binning, Clear Filter 2025-01-08 19:36 UT (#1291069) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

IC 1496 with SN 2025X - 2025-01-08 (T+8.8d) Image below (2025-01-08.817) was taken 8.8 days after discovery of 2025X Position of reported supernova (very faint) is shown by white cross-hairs Measured Magnitude +15.94 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-08 19:42 UT (#1291068-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025X (in IC 1496) on Supernova 2025 Page >>

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LEDA 1846725 - Galaxy with Type II Supernova 2024iss

LEDA 1846725 with SN 2024iss (Coma Berenices) SN 2024iss (Type: II) discovered 2024-05-12.901 UT by GOTO Alias: GOTO24bmf, ZTF24aankvcy, ATLAS24hhy Discovery Magnitude 14.58 (L-GOTO Filter) vs Prior Non-Detection Limiting Magnitude 19.5  ( TNS 2024iss )

LEDA 1846725 with SN 2024iss - 2025-01-09 (T+241.2d) Image below (2025-01-09.149) was taken 241.2 days after discovery of 2024iss Position of reported SN (faint, likely fading) is indicated by white cross-hairs. Measured Magnitude +16.96 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-09 03:43 UT (#1291256-60) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

LEDA 1846725 with SN 2024iss - Earlier Image 2024-08-31 (T+111.0d) Image below (2024-08-31.888) was taken 111.0 days after discovery of 2024iss Position of reported SN (fading) is indicated by white cross-hairs. Measured Magnitude +15.66 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-31 21:26 UT (#1237023-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024iss (in LEDA 1846725) on Supernova 2024 Page >>

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M33 - Spiral Galaxy with EGN Candidate AT 2024afyi  (non-detection)

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NGC 3443 - Spiral Galaxy with Type II Supernova 2024ehs

NGC 3443 with SN 2024ehs (Leo) SN 2024ehs (Type: II) discovered 2024-03-15.470 UT by ATLAS Alias: ATLAS24dqq Discovery Magnitude 18.10 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.53   ( TNS 2024ehs )

NGC 3443 with SN 2024ehs - 2025-01-09 (T+299.6d) Image below (2025-01-09.040) was taken 299.6 days after discovery of 2024ehs Position of reported supernova (not visible ?) is shown by white cross-hairs Poor quality image (poor S/N)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-09 01:06 UT (#1291186-90) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3443 with SN 2024ehs - Earlier Image, 2024-03-28 (T+12.6d) Image below (2024-03-28.060) was taken 12.6 days after discovery of 2024ehs Position of reported supernova (distinct) is shown by white cross-hairs Measured Magnitude +14.89 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 01:36 UT (#1201057-61) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024ehs (in NGC 3443) on Supernova 2024 Page >>

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NGC 3521 - Spiral Galaxy with Type Ic Supernova 2024aecx

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SN 2024xqt - Type Ia Supernova

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SN 2024adhf - Type Ia Supernova

SN 2024adhf (Crater) Alias: In WISEA J113009.86-134449.7 SN 2024adhf (Type: Ia) discovered 2024-12-01.269 UT by GOTO Alias: GOTO24iqy, ZTF24abuvknk, Gaia25aao Discovery Magnitude 14.9 (L-GOTO Filter) vs Prior Non-Detection Limiting Magnitude 18.9 Confirmed SN Ia Gaia, 2024-12-04 09:47, mag 14.08 Gaia, 2025-01-01 11:19, mag 14.45  ( TNS 2024acnr | Gaia25aao )

SN 2024adhf - 2025-01-09 (T+38.9d) Image below (2025-01-09.123) was taken 38.9 days after discovery of 2024adhf Position of reported supernova (distinct, fading) is shown by white cross-hairs Estimated Magnitude +14.4 (Clear Filter) Not sufficiently separable from adjacent object for making a magnitude measurement in CCDSoft.

Annotated CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-09 03:04 UT (#1291242-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2024adhf - Detail, 2025-01-09 (T+38.9d) Position of reported supernova (distinct, fading) is shown by white cross-hairs

Annotated CCD Image (250% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-09 03:04 UT (#1291242-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2024adhf - Earlier Detail, 2024-12-13 (T+12.0d) Image below (2024-12-13.235) was taken 12.0 days after discovery of 2024adhf Position of reported supernova (distinct) is shown by white cross-hairs Adjacent object is GSC 5515:838 (UCAC2 26890101) as possible star, but this also corresponds to catalog location of WISEA J113009.86-134449.7 (a galaxy)

Annotated CCD Image (250% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-12-13 05:45 UT (#1282124-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2024adhf - Later Detail 2025-03-20 (T+108.8d) Image below (2025-03-20.059) was taken 108.8 days after discovery of 2024adhf Position of reported supernova (very faint) is shown by white cross-hairs Adjacent object is GSC 5515:838 (UCAC2 26890101) as possible star, but this also corresponds to catalog location of WISEA J113009.86-134449.7 (a galaxy)

Annotated CCD Image (250% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-03-20 01:34 UT (#1304145-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2024adhf - Reference Image PanSTARRS image shows presence of a faint spiral galaxy at location of SN 2024adhf Unclear if SN is associated with this faint galaxy or with galaxy  WISEA J113009.86-134449.7 (sitting at same position as GSC 5515:838)

PanSTARRS DR1 Color image displayed & captured in Aladin

Images of SN 2024adhf on Supernova 2024 Page >>

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SN 2024aeey - Type Ia Supernova

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