David's Astronomy Pages Images - Session 1290 (2025-01-04)

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Session Notes

C/2023 A3 (Tsuchinshan-ATLAS) - Comet     Nova Vul 2024 - Nova (V615 Vul)  (non-detection)     AT 2024acem - CV Type Transient (non-detection)     LEDA 1762640 - Galaxy with Transient AT 2024ety (non-detection) LEDA 2078778 - Galaxy with Type Ia Supernova 2024xqe M31 - Spiral Galaxy with Nova M31 2024-04c?  (? AT2024eis)  (non-detection) M33 - Spiral Galaxy with EGN Candidate  AT 2024afyi  (non-detection)     UGC 1325 - Elliptical Galaxy with Type Ia Supernova 2024aedt       - NGC 2170, WHL0137-08 attempts failed (cloud/poor transparency)     Variable Stars (photometric monitoring) - RX And, TT Ari, BL Lac     Nearby Stars (astrometric monitoring) - Gliese 65, Teegardens Star

- Attempted all night session (5 hr). Session ended early due to cloud. Very cold night (-6°C).     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -6°C (min) - CCD Temperature: -30°C - Notes from 2025-01-04 >>     - Aurora Images from 2025-01-04  >>

Observing Result

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C/2023 A3 (Tsuchinshan-ATLAS) - Comet

C/2023 A3 (Tsuchinshan-ATLAS) - 2025-01-04 (passing through Aquila) Sun Distance 2.03 AU (receeding) Earth Distance 2.81 AU (420.6 million km)		C/2023 A3 (Tsuchinshan-ATLAS) - 2025-01-04 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 33.29 arcsec/hr, Dec 13.04 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-01-04 17:37 UT (#1290007-09) 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) 10 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-01-04 17:38 UT (#1290005-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2023 A3 Tsuchinshan-ATLAS on Comets 2024 Page >>
Images of C/2023 A3 Tsuchinshan-ATLAS on Comets 2025 Page >>

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Nova Vul 2024 - Nova (V615 Vul)  (non-detection)

Nova Vul 2024 (Vulpecula) Alias: N Vul 2024, V615 Vul, PNV J19430751+2100204 Nova Vul 2024 (Type: Nova) discovered 2024-07-29.832 UT by New Milky Way survey Discovery Magnitude 11.2 Maximum Magnitude 9.8 [ Novae ]

Nova Vul 2024 - 2025-01-04 (T+159.0d) Image below (2025-01-04.795) was taken 159.0 days after discovery of Nova Vul 2024 Positon of Nova (faded & no longer visible) is shown by white cross hairs.   Non-Detection Limiting Magnitude +17.0 (Clear Filter) Poor quality image (poor sky transparency)

Annotated CCD Image (100% size, linear scale, cropped) 3 x 30s exposure (average combine), 3x3 binning, Clear Filter 2025-01-04 19:06 UT (#1290045-48) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Vul 2024 - Earlier Image, 2024-09-10 (T+43.0d) Image below (2024-09-10.867) was taken 43.0 days after discovery of nova Nova (distinct) is shown by white cross hairs.   Measured magnitude +13.10 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 30s exposure (average combine), 3x3 binning, Clear Filter 2024-09-10 20:49 UT (#1240006-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova Vul 2024 on Novae 2024 Page >>

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

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LEDA 1762640 - Galaxy with Transient AT 2024ety (non-detection)

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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 - 2025-01-04 (T+87.4d) Image below (2025-01-04.856) was taken 87.4 days after discovery of 2024xqe Position of reported supernova (faint) is shown by white cross-hairs Measured Magnitude +15.68 (Clear Filter) - SN + Nucleus Poor quality image (poor S/N)

Annotated CCD Image (175% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-04 20:40 UT (#1290093-97) 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 2024-04c?  (? AT2024eis)  (non-detection)

M31 with Nova M31 2024-04c? (Andromeda) Nova M31 2024-04c? (Type: unk) discovered 2024-04-28.047 UT by Kamil Hornoch et al. Alias: PNV J00411379+4105499,  ? AT2024eis Discovery Magnitude 16.4 (R Filter)  ( Discovery Image )

Nova M31 2025-04a? - 2025-01-04 (T+251.7d) Cam2 Reference Image Position of Nova M31 2025-04a? (not visible ) is shown by blue circle Limits of M31 Spiral Galaxy is shown by white ellipse

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2025-01-04 17:45 UT TS 80mm APO, ZWO ASI178MC

M31 -Spiral Galaxy with Nova M31 2024-04c? - 2025-01-04 (T+251.7d) Transient position (faded & no longer visible) is shown by white circle

Annotated CCD Image (70% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-04 17:58 UT (#1290018-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M31 2024-04c? - 2025-01-04 (T+251.7d) Image below (2025-01-04.742) was taken 251.7 days after discovery of Nova M31 2024-04c? Position of earlier transient (faded & no longer visible) is shown by white cross-hairs

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-04 17:58 UT (#1290018-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova M31 2024-04c? (in M31) on Transients 2024 Page >>

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

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UGC 1325 - Elliptical Galaxy with Type Ia Supernova 2024aedt

UGC 1325 with SN 2024aedt (Pisces) SN 2024aedt (Type: Ia) discovered 2024-12-16.375 UT by ATLAS Alias: ATLAS24rks, ZTF24abxzhim Discovery Magnitude 18.55 (orange-ATLAS Filter)  ( TNS 2024aedt )

UGC 1325 with SN 2024aedt - 2025-01-04 (T+19.4d) Image below (2025-01-04.756) was taken 19.4 days after discovery of 2024aedt Position of earlier SN (faint) is shown by white cross-hairs Measured Magnitude +16.64 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-01-04 18:12 UT (#1290025-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024aedt (in UGC 1325) on Supernova 2024 Page >>

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