David's Astronomy Pages Images - Session 1273 (2024-11-20)

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Images (S1274)

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Session Notes

AT 2022xpa - Transient  (non-detection) AT 2023abqd - CV Type Transient  (non-detection) AT 2024epb - CV Type Transient  (non-detection) AT 2024ycs - Type CV? Transient  (non-detection) AT 2024zys - CV Type Transient AT 2024aaxw - Type CV? Transient     IC 2163 - Spiral Galaxy (UGCA 125) LEDA 1021768 - Galaxy with Type Ia Supernova 2022zue  (non-detection) LEDA 2078778 - Galaxy with Type Ia Supernova 2024xqe M31 - Spiral Galaxy with Nova M31 2024-11b? (not distinguishable)     NGC 1275 - Spiral Galaxy with Type IIP Supernova 2024xav NGC 1964 - Spiral Galaxy (Herschel IV-21)     UGC 1596 - Spiral Galaxy with Type Ia-91bg Supernova 2024yhg     Variable Stars (photometric monitoring) - UN Mon, CN Ori, GK Per     Nearby Stars (astrometric monitoring) - None

- Attempted all night session (7 hrs), Started late due to snow showers ended early due to cloud     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -2°C (min) - CCD Temperature: -25°C - Notes from 2024-11-20 >>     -

Observing Result

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AT 2022xpa - Transient  (non-detection)

AT 2022xpa (Lepus) AT 2022xpa (Type: unk) discovered 2022-10-13.440 UT by ZTF Alias: ZTF22abmyiwz, Gaia22eir Discovery Magnitude 16.05 (g-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 19.4 Candidate SN on the top of PS1 source Gaia, 2022-10-14 08:44, Mag 16.33 Gaia, 2023-08-17 16:48, Mag 17.22 Gaia, 2023-08-17 18:34, Mag 17.18 Gaia, 2023-09-22 10:13, Mag 20.61  ( TNS 2022qnv , Gaia22eir )

AT 2022xpa - 2024-11-21 (T+769.6d) Image below (2024-11-21.057) was taken 769.6 days after discovery of 2022xpa Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +17.6 (Clear Filter) (object has likely returned to its normal (non-dimmed) state)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-21 01:30 UT (#1273086-90) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022xpa on Transients 2022 Page >>

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

AT 2023abqd (Lynx) AT 2023abqd (Type: CV) discovered 2023-12-25.397 UT by Gaia Alias: Gaia23dul Alerting Magnitude 16.72 (G-Gaia Filter) vs Historic Magnitude 19.70 +/- 0.31 SD Outburst in candidate CV NSV 18230  ( TNS 2023abqd , Gaia23dul )

AT 2023abqd - 2024-11-21 (T+331.8d) Image below (2024-11-21.163) was taken 331.8 days after discovery of 2023abqd Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.7 (Clear Filter) (star has likely returned to its normal (non-dimmed) state)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-11-21 03:58 UT (#1273123-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023abqd on Transients 2023 Page >>

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

AT 2024epb (Canis Major) AT 2024epb (Type: CV) discovered 2024-03-15.142 UT by Gaia Alias: Gaia24azu Alerting Magnitude 16.66 (G-Gaia Filter) vs Historic Magnitude 17.16 +/- 0.09 SD ~0.6 mag rise in Gaia source, becomes bluer  ( TNS 2024epb , Gaia24azu )

AT 2024epb - 2024-11-21 (T+251.0d) Image below (2024-11-21.113) was taken 251.0 days after discovery of 2024epb Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +16.8 (Clear Filter) (star has likely returned to its normal (non-dimmed) state, Mag 16.9-17.3,  G-Gaia)

Annotated CCD Image (100% size, linear scale, cropped) 60s exposure (single frame), 3x3 binning, Clear Filter 2024-11-21 02:43 UT (#1273116) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024epb on Transients 2024 Page >>

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

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AT 2024zys - CV Type Transient

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AT 2024aaxw - Type CV? Transient

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IC 2163 - Spiral Galaxy (UGCA 125)

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LEDA 1021768 - Galaxy with Type Ia Supernova 2022zue  (non-detection)

LEDA 1021768 with SN 2022zue (Sextans) SN 2022zue (Type: Ia) discovered 2022-11-08.338 UT by ATLAS Alias: ATLAS22blmj Discovery Magnitude 16.43 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 18.63  ( TNS 2022zue  )

LEDA 1021768 with SN 2022zue - 2024-11-21 (T+743.8d) Image below (2024-11-21.178) was taken 743.8 days after discovery of 2022zue Position of earlier supernova (no longer visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.0 (Clear Filter) Poor quality image (single frame, poor s/n) Altitude: 18.8°, Airmass: 3.103

Annotated CCD Image (125% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2024-11-21 04:17 UT (#1273143) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2022zue on Supernovae 2022 Page >>

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LEDA 2078778 - Galaxy with Type Ia Supernova 2024xqe

LEDA 2078778 with SN 2024xqe (Triangulum) SN 2024xqe (Type: Ia) discovered 2024-10-09.466 UT by PS1 Alias: PS24jlp, ZTF24ablssfw Discovery Magnitude 19.93 (g-P1 Filter) Type: SN Ia,  Redshift: z=0.034  ( TNS 2024xqe )

LEDA 2078778 with SN 2024xqe - 2024-11-20 (T+42.5d) Image below (2024-11-20.922) was taken 42.5 days after discovery of 2024xqe Position of reported supernova (faint) is shown by white cross-hairs Measured Magnitude +15.49 (Clear Filter) - SN + Nucleus

Annotated CCD Image (175% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-20 22:16 UT (#1273013-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

LEDA 2078778 with SN 2024xqe - Earlier Image, 2024-10-24 (T+15.5d) Image below (2024-10-24.996) was taken 15.5 days after discovery of 2024xqe Position of reported supernova (distinct) is shown by white cross-hairs Measured Magnitude +15.43 (Clear Filter)

Annotated CCD Image (175% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-10-25 00:01 UT (#1259097-101) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024xqe (in LEDA 2078778) on Supernova 2024 Page >>

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M31 - Spiral Galaxy with Nova M31 2024-11b? (not distinguishable)

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NGC 1275 - Spiral Galaxy with Type IIP Supernova 2024xav

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NGC 1964 - Spiral Galaxy (H IV-21)

NGC 1964 (Lepus) Alias: H IV-21  [ Herschel 400 Objects ]

Annotated CCD Image (50% size, square root scale) 7 x 120s exposure (average combine), 3x3 binning, Clear Filter 2024-11-21 00:52 UT (#1273070-76) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 1964 - Detail Altitude: 10.1°, Airmass: 5.57

Annotated CCD Image (125% size, square root scale, cropped) Image details as above

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Dual Band (DB) Filter 2024-11-21 01:08 UT (#1273077-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 1964 / H IV-21 - Earlier Image (Jan 2020) Altitude 10.8°, Airmass 5.3

CCD Image (100% size, log scale, cropped) 6 x 120s exposure (average combine), 3x3 binning, C Filter 2020-01-18 22:09 UT (#742042-48) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGC 1596 - Spiral Galaxy with Type Ia-91bg Supernova 2024yhg

UGC 1596 with SN 2024yhg (Triangulum) SN 2024yhg (Type: Ia-91bg) discovered 2024-10-15.147 UT by CRTS Alias: SNhunt469 Discovery Magnitude 16.3 ( Clear Filter)  ( TNS 2024yhg )

UGC 1596 with SN 2024yhg - 2024-11-10 (T+26.8d) Image below (2024-11-10.953) was taken 26.8 days after discovery of 2024yhg Position of reported SN (very faint/barely visible) is indicated by white cross-hairs.

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-20 23:02 UT (#1273035-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024yhg (in UGC 1596) on Supernova 2024 Page >>

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