David's Astronomy Pages Images - Session 1241 (2024-09-11)

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Images (S1242)

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Session Notes

237P/LINEAR - Comet     AT 2022aeeo - CV Type Transient AT 2023exh - Transient AT 2023rbs - Type HPM Transient AT 2024xf - Transient AT 2024koe - Transient in M31  (non-detection) AT 2024ugc - Transient AT 2024uvv - CV Type Transient     PAV78 - H II Region (in M31) M31 - Spiral Galaxy with Type EGN Transient AT 2023veq M33 - Spiral Galaxy with Nova M33 2024-08a?     NGC 797 - Spiral Galaxy with Type II Supernova 2024jjc     SN 2023sfl - Type Ia-91T Supernova in SDSS Galaxy         Variable Stars (photometric monitoring) - BL Lac     Nearby Stars (astrometric monitoring) - None

- Attempted All-Night Session (5.4 hr) interrupted by and ended early by rain , threat of rain & cloud     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 6.5°C (min) - CCD Temperature:   -15°/-20°C - Notes from 2024-09-11 >>

Observing Result

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237P/LINEAR - Comet

237P/LINEAR - 2024-09-12 (passing through Aries) Sun Distance 3.71 AU (receeding) Earth Distance 3.08 AU (460.5 million km) Expected position of comet (not visible) is shown by white circle		237P/LINEAR) - 2024-09-12 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -8.59 arcsec/hr, Dec -1.68 arcsec/hr) Expected position of comet (not visible) is shown by white circle
Annotated CCD Image (50% size, square root scale) 8 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-09-12 02:07 UT (#1241073-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) Image details as left
Images of 237P/LINEAR on Comets 2024 Page >>

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AT 2022aeeo - CV Type Transient

AT 2022aeeo (Pegasus) AT 2022aeeo (Type: CV) discovered 2022-12-30.681 UT by Gaia Alias: Gaia22epj Discovery magnitude 14.35 (G-Gaia filter) vs Historic Magnitude 14.68 +/- 0.09 SD Brightening in Gaia and wise source  ( TNS 2022aeeo | Gaia22epj )

AT 2022aeeo - 2024-09-11 (T+621.3d) Image below (2024-09-11.970) was taken 621.3 days after discovery of 2022aeeo Position of earlier transient (distinct) is shown by white cross-hairs Measured Magnitude +14.57 (Clear Filter) Star is within its normal magnitude range

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-09-11 23:20 UT (#1241034-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022aeeo on Transients 2022 Page >>

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AT 2023exh - Transient

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AT 2023rbs - Type HPM Transient

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AT 2024xf - Transient

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AT 2024koe - Transient  in M31 (non-detection)

AT 2024koe (Andromeda) AT 2024koe (Type: unk) discovered 2024-06-08.412 UT by GEOTS Alias: GEOTS-Balaji-2024-008 Discovery Magnitude 16.8 (Other Filter)  ( TNS 2024koe )

AT 2024koe - 2024-09-11 (T+95.6d) Image below (2024-09-11.978) was taken 95.6 days after discovery of 2024koe Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.7 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2024-09-11 23:28 UT (#1241041) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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

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AT 2024ugc - Transient

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AT 2024uvv - CV Type Transient

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PAV78 - H II Region (in M31)

PAV78 - H II Region (in M31)  (Andromeda)

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 22:16 UT (#1171117-21) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

PAV78 - H II Region (in M31) - Detail

Annotated CCD Image (175% size, square root scale, cropped) Image details as above

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M31 - Spiral Galaxy with Type EGN Transient AT 2023veq

Nova M31 AT 2023veq (Andromeda) AT 2023veq (Type: EGN) discovered 2023-10-16.987 UT by Robert Fidrich Alias: Vend55, PNV J00433237+4138211, MASTER OT J004332.34+413821.4 Discovery Mag 18.6 (Clear Filter) ( TNS 2023veq )

Nova M31 AT 2023veq - 2023-12-02 (T+46.9d) Image below (2023-12-02.922) was taken 46.9 days after discovery of 2023veq Position of reported transient (no longer visible) is shown by white cross-hairs

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 22:16 UT (#1171117-21) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023veq (in M31) on Transients 2023 Page >>

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M33 - Spiral Galaxy with EGN Transient Nova M33 2024-08a?

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NGC 797 - Spiral Galaxy with Type II Supernova 2024jjc

NGC 797 with SN 2024jjc (Andromeda) AT 2024jjc (Type: II) discovered 2024-05-26.481 UT by ZTF Alias: ZTF24aaoupov Discovery Magnitude 17.19 (r-ZTF Filter)  ( TNS 2024epz )

NGC 797 with SN 2024jjc - 2024-09-12 (T+108.6d) Image below (2024-09-12.052) was taken 108.6 days after discovery of 2024jjc Position of earlier supernova (very faint/ barely visible) is indicated by white cross-hairs Estimated Magnitude +19.3 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-12 01:18 UT (#1241063-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024jjc (in NGC 797) on Supernova 2024 Page >>

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SN 2023sfl - Type Ia-91T Supernova in SDSS Galaxy

SN 2023sfl (Pisces) Alias: In SDSS J012038.93+321416.15 SN 2023sfl (Type: Ia-91T) discovered 2023-09-13.450 UT by ZTF Alias: ZTF23abcvqkd Discovery Magnitude 19.89 (r-ZTF Filter)  ( TNS 2023sfl )

SN 2023sfl - 2024-09-12 (T+364.6d) Image below (2024-09-12.009) was taken 364.6 days after discovery of 2023sfl Position of earlier SN (no longer visible) is indicated by white cross-hairs. Non-Detection Limiting Magnitude +19.5 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-09-12 00:16 UT (#1241052-53) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2023sfl - Earlier Image 2023-11-08 (T+56.4d) Image below (2023-11-08.833) was taken 56.4 days after discovery of 2023sfl Position of earlier reported SN (faint SN or nucleus ?) is indicated by white cross-hairs. Measured Magnitude +18.05  (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-11-08 20:08 UT (#1163043-47) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023sfl (in SDSS Galaxy) on Supernova 2023 Page >>

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