David's Astronomy Pages Images - Session 1267 (2024-11-12)

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Session Notes

C/2023 A3 (Tsuchinshan-ATLAS) - Comet     AT 2022hqz - CV Type Transient  (non-detection) AT 2022qct - Type YSO Transient  (non-detection) AT 2023cns - CV Type Transient AT 2023ctk - Type YSO Transient AT2023pmd - Transient  (non-detection) AT 2023qou - CV Type Transient (non-detection) AT 2023abtv - CV Type Transient     AT 2024xf - Transient  (non-detection) AT 2024eiy - CV Type Transient AT 2024eqz - Transient AT 2024woc - Transient  (non-detection) AT 2024xdo - Type YSO Transient AT 2024xpy - Type BL Transient AT 2024xvi - Transient  (non-detection) AT 2024aafw - Type CV? Transient  (non-detection) AT 2024aasc - CV Type Transient     EGB 6 - Planetary Nebula (Ellis Grayson Bond 6) M31 - Spiral Galaxy with Transient AT 2024dya     NGC 3524 - Spiral Galaxy with Type Ia Supernova 2024inv NGC 5162 - Spiral Galaxy with Type II Supernova 2024aawh NGC 6685 - Elliptical Galaxy with Type Ia Supernova 2023ndu     SN 2023ufx - Type II/FBOT Supernova in SDSS Galaxy  (non-detection) SN 2024dgy - Type II Supernova       - NGC 1832 w/AT2024bqt, NGC 2440 (Pl.Neb), NGC 5235 w/SN2024grb & UGC 5426 w/SN2024aanq attempts failed (due to cloud)      Variable Stars (photometric monitoring) - RX And, S Cyg, BL Lac, T CrB     Nearby Stars (astrometric monitoring) - Barnards Star

- All-Night Session (11.7 hrs). Cloud towards end of session     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 3.5°C (min) climbing later to 6-7°C - CCD Temperature: -15°/-20°C - Notes from 2024-11-12 >>     -

Observing Result

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C/2023 A3 (Tsuchinshan-ATLAS) - Comet

C/2023 A3 (Tsuchinshan-ATLAS) - 2024-11-12 (passing through Serpens) Sun Distance 1.15 AU (receeding) Earth Distance 1.38 AU (207.0 million km)		C/2023 A3 (Tsuchinshan-ATLAS) - 2024-11-12 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 85.28 arcsec/hr, Dec 2.82 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 45s exposure (single frame), 3x3 binning, V Filter 2024-11-12 18:39 UT (#1267021) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, log scale, cropped) 45s exposure (single frame), 3x3 binning, V Filter 2024-11-12 18:39 UT (#1267021) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
C/2023 A3 (Tsuchinshan-ATLAS) - 2024-11-12		C/2023 A3 (Tsuchinshan-ATLAS) - 2024-11-12
False Color CCD Image (50% size, log scale) 45s exposure (single frame), 3x3 binning, V Filter 2024-11-12 18:39 UT (#1267021) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		False Color CCD Image (100% size, log scale, cropped) Image details as left
Images of C/2023 A3 Tsuchinshan-ATLAS on Comets 2024 Page >>

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

AT 2022hqz (Perseus) AT 2022hqz (Type: CV) discovered 2022-04-12.817 UT by Gaia Alias: Gaia22bop Alerting Magnitude 15.53 (G-Gaia Filter) vs Historic Magnitude 20.45 +/- 0.26 SD ~5 mag outburst in Gaia source, candidate CV  ( TNS 2022hqz , Gaia22bop )

AT 2022hqz - 2024-11-12 (T+945.2d) Image below (2024-11-12.977) was taken 945.2 days after discovery of 2022hqz Position of earlier transient (not visible or barely visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.6 (Clear FIlter) Star has likely returned to its normal (very dim) state

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-11-12 23:30 UT (#1267140-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022hqz on Transients 2022 Page >>

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AT 2022qct - Type YSO Transient (non-detection)

AT 2022qct (Orion) AT 2022qct (Type: YSO) discovered 2022-07-22.721 UT by Gaia Alias: Gaia22dbe Alerting Magnitude 16.69 (G-Gaia Filter) vs Historic Magnitude 18.71 +/- 0.34 SD More than 2 mag brightening in YSO  ( TNS 2022qct | Gaia22dbe )

AT 2022qct - 2024-11-12 (T+844.3d) Image below (2024-11-12.990) was taken 844.3 days after discovery of 2022qct Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.5 (Clear FIlter) Star has likely returned to its normal (very dim) state Nebulosity on right hand side of image is part of M42

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-12 23:54 UT (#1267164-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2022qct - 2024-11-12 (T+844.3d) Image below (2024-11-12.990) was taken 844.3 days after discovery of 2022qct Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.5 (Clear FIlter)

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-12 23:54 UT (#1267164-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022qct on Transients 2022 Page >>

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AT 2023cns - CV Type Transient

AT 2023cns (Cygnus) AT 2023cns (Type: CV) discovered 2023-02-23.753 UT by Gaia Alias: Gaia23avm Alerting Magnitude 15.12 (G-Gaia Filter) vs Historic Magnitude 15.38 +/- 0.06 SD Bright gal.plane source rises by 0.3 mag  ( TNS 2023cns , Gaia23avm )

AT 2023cns - 2024-11-12 (T+628.1d) Image below (2024-11-12.849) was taken 628.1 days after discovery of 2023cns Position of earlier transient (not visible or barely visible) is shown by white cross-hairs Measured Magnitude +15.08 (Clear FIlter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-11-12 20:25 UT (#1267062-66) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023cns on Transients 2023 Page >>

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AT 2023ctk - Type YSO Transient

AT 2023ctk (Orion) AT 2023ctk (Type: YSO) discovered 2023-03-03.857 UT by Gaia Alias: Gaia23azb, EM* LkHA 294 Discovery Mag 16.3 (G-Gaia Filter) vs Historic Mag 15.05 Dimming in known YSO (Young Stellar Object) ( TNS 2023ctk | Gaia23azb )

AT 2023ctk - 2024-11-13 (T+620.1d) Image below (2024-11-13.003) was taken 620.1 days after discovery of 2023ctk Position of earlier transient (distinct, brightening ?) is shown by white cross-hairs Measured Magnitude +15.21 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-13 00:14 UT (#1267172-76) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023ctk on Transients 2023 Page >>

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AT2023pmd - Transient  (non-detection)

AT 2023pmd (Cepheus) AT 2023pmd (Type: unk) discovered 2023-08-13.916 UT by MASTER Alias: MASTER OT J215626.22+570457.7 Discovery Mag 16.1 (Clear Filter) ( TNS 2023pmd )

AT 2023pmd - 2024-11-12 (T+457.0d) Image below (2024-11-12.914) was taken 457.0 days after discovery of 2023pmd Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.7 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-12 22:05 UT (#1267105-09) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023pmd on Transients 2023 Page >>

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

AT 2023qou (Cygnus) AT 2023qou (Type: CV) discovered 2023-08-20.117 UT by XOSS Alias: KATS23Q001, Gaia23cao Discovery Mag 15.6 (Clear Filter) vs Prior Non-Detection limiting mag 18.0 UG candidate classified by XOSS Source not visible on PanSTARRS or DSS2 plate images in Aladin Gaia,                   2023-08-20 02:48   15.11 KATS23Q001     2023 08 23.82        16.2CV  ( TNS 2023qou | Gaia23cao )

AT 2023qou - 2024-11-12 (T+450.8d) Image below (2024-11-12.959) was taken 450.8 days after discovery of 2023qou Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +17.9 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-11-12 23:04 UT (#1267126-30) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023qou on Transients 2023 Page >>

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AT 2023abtv - CV Type Transient

AT 2023abtv (Pegasus) AT 2023abtv (Type: CV) discovered 2023-12-26.986 UT by Gaia Alias: Gaia23duv Discovery magnitude 12.07 (G-Gaia Filter) vs Historic Magnitude 13.38 +/- 0.57 (SD) Gaia and WISE source brightens by 2 mag  ( TNS 2023abtv | Gaia23duv )

AT 2023abtv - 2024-11-12 (T+321.8d) Image below (2024-11-12.824) was taken 321.8 days after discovery of 2023abtv Position of reported transient (distinct, fading again) is shown by white cross-hairs Measured Magnitude +12.32 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-11-12 19:49 UT (#1267048-52) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023abtv on Transients 2023 Page >>

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AT 2024xf - Transient (non-detection)

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AT 2024eiy - CV Type Transient

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AT 2024eqz - Transient

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AT 2024woc - Transient (non-detection)

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AT 2024xdo - Type YSO Transient

AT 2024xdo (Orion) AT 2024xdo (Type: YSO) discovered 2024-09-30.030 UT by Gaia Alias: Gaia24cts Alerting Magnitude 16.38 (G-Gaia Filter) vs Historic Magnitude 16.68 +/- 0.02 SD [ TNS 2024xdo ] [ Gaia24cts ]

AT 2024xdo - 2024-11-13 (T+44.0d) Image below (2024-11-13.067) was taken 44.0 days after discovery of 2024xdo Position of reported transient (very faint) is shown by white cross hairs.   Measured Magnitude +16.43 (Clear Filter) Poor quality image (single frame)

Annotated CCD Image (100% size, linear scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2024-11-13 01:36 UT (#1267200) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024xdo on Transients 2024 Page >>

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AT 2024xpy - Type BL Transient

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AT 2024xvi - Transient (non-detection)

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

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AT 2024aasc - CV Type Transient

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EGB 6 - Planetary Nebula (Ellis Grayson Bond 6)

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M31 - Spiral Galaxy with Transient AT 2024dya (non-detection)

M31 with AT 2024dya (Andromeda) AT 2024dya (Type: unk) discovered 2024-03-05.432 UT by MASTER Alias: MASTER OT J004520.34+413426.8, Gaia24ayt Discovery Magnitude 17.72 (Clear Filter)  ( TNS 2024dya | Gaia24ayt )

M31 - Spiral Galaxy with AT 2024dya (T+252.5d) Cam2 Reference Image Position of AT 2024dya (not visible in this exposure) is shown by blue circle Limits of M31 Spiral Galaxy is shown by white ellipse

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2024-11-12 21:28 UT TS 80mm APO, ZWO ASI178MC

M31 -Spiral Galaxy with AT 2024dya - 2024-11-12 (T+252.5d)

Annotated CCD Image (70% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-12 21:42 UT (#1267098-102) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2024dya - 2024-11-12 (T+252.5d) Image below (2024-11-12.898) was taken 252.5 days after discovery of 2024dya Position of reported transient (not visible) is shown by white cross-hairs  Non-Detection Limiting Magnitude +18.4 (Clear Filter)

Annotated CCD Image (125% size, log scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-11-12 21:42 UT (#1267098-102) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024dya (in M31) on Transients 2024 Page >>

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NGC 3524 - Spiral Galaxy with Type Ia Supernova 2024inv

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NGC 5162 - Spiral Galaxy with Type II Supernova 2024aawh

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NGC 6685 - Elliptical Galaxy with Type Ia Supernova 2023ndu

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SN 2023ufx - Type II/FBOT Supernova in SDSS Galaxy (non-detection)

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SN 2024dgy - Type II Supernova

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