David's Astronomy Pages Images - Session 1194 (2024-02-27)

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Images (S1195)

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Session Notes

12P/Pons-Brooks - Comet 13P/Olbers - Comet 103P/Hartley - Comet     AT 2023bml - Type MP Transient (non-detection) AT2023clo - CV Type Transient (V0476 Cyg) AT 2023cub - Transient AT 2023cuz - Type YSO Transient, UY Aur AT 2023cwd - CV Type Transient (non-detection) AT 2023rey - CV Type Transient (non-detection)     CGCG 119-104 - Spiral Galaxy with Type Ia Supernova 2024cdi     NGC 3690 - Spiral Galaxy with Type Ia Supernova 2023wrk NGC 3893 - Spiral Galaxy with LRN Type Transient AT 2023uhx     UGC 831 - Spiral Galaxy with Type IIb Supernova 2023wdd UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut UGC 11858 - Spiral Galaxy with Type Ia Supernova 2023rjj (non-detection) UGC 12639 - Spiral Galaxy with Type II Supernova 2023jri     Variable Stars (photometric monitoring) - AM CVn, U Gem, RZ LMi      Nearby Stars (astrometric monitoring) - None

- Evening Session (9.5hrs effective)     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 2°C (min) - CCD Temperature:   -20°C - Notes from 2024-02-27 >>     -

Observing Result

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12P/Pons-Brooks - Comet (Outburst)

12P/Pons-Brooks - 2024-02-27 (passing through  Andromeda) Sun Distance 1.24 AU (approaching) Earth Distance 1.70 AU (254.7 million km)		12P/Pons-Brooks -  2024-02-27 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 189.81 arcsec/hr, Dec -29.09 arcsec/hr)
Annotated CCD Image (50% size, log scale) 90s exposure (single frame), 3x3 binning, Clear Filter 2024-02-27 19:01 UT (#1194006) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, log root scale, cropped) 6 x 90s exposure (average combine), 3x3 binning, Clear Filter 2024-02-27 19:08 UT (#1194006-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
12P/Pons-Brooks - 2024-02-27 Detail		12P/Pons-Brooks - 2024-02-27 Detail
Annotated false-colour CCD Image (50% size, log scale) 6 x 90s exposure (average combine), 3x3 binning, Clear Filter 2024-02-27 19:08 UT (#1194006-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated false-colour CCD Image (100% size, log scale, cropped) Inverse Spectrum Image details as left
Images of 12P/Pons-Brooks on Comets 2023 Page >>
Images of 12P/Pons-Brooks on Comets 2024 Page >>

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13P/Olbers - Comet

13P/Olbers - 2024-02-27 (passing through Cetus) Sun Distance 2.11 AU (approaching) Earth Distance 2.30 AU (343.5 million km)		13P/Olbers - 2024-02-27 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 28.42 arcsec/hr, Dec 53.35 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-27 19:41 UT (#1194022-24) 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) 10 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-27 19:45 UT (#1194022-31) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 13P/Olbers on Comets 2024 Page >>

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103P/Hartley - Comet

103P/Hartley - 2024-02-27 (passing through Monoceros) Sun Distance 2.01 AU AU (receeding) Earth Distance 1.16 AU (173.9 million km)		103P/Hartley - 2024-02-27  Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 1.67 arcsec/hr, Dec 33.68 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-27 20:40 UT (#1194094-97) 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) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-27 20:40 UT (#1194094-97) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 103P/Hartley on Comets 2023 Page >>
Images of 103P/Hartley on Comets 2024 Page >>

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AT 2023bml - Type MP Transient (non-detection)

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AT2023clo - CV Type Transient (V0476 Cyg)

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AT 2023cub - Transient

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AT 2023cuz - Type YSO Transient, UY Aur

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

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

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CGCG 119-104 - Spiral Galaxy with Type Ia Supernova 2024cdi

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NGC 3690 - Spiral Galaxy with Type Ia Supernova 2023wrk

NGC 3690 with SN 2023wrk (Ursa Major) SN 2023wrk (Type: Ia) discovered 2023-11-04.229 UT by GOTO Alias: GOTO23bdo, ZTF23abpbdfm, ATLAS23vna Discovery Magnitude 18.11 (L-GOTO filter)  ( Rochester Supernova site ) ( TNS 2023wrk )

NGC 3690 with SN 2023wrk - 2024-02-27 (T+115.8d) Image below (2024-02-27.986) was taken 115.8 days after discovery of 2023wrk Position of SN (fading) is shown by white cross-hairs Measured Magnitude +16.88 (C Filter)

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-27 23:47 UT (#1194168-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023wrk (in NGC 3690) on Supernovae 2023 Page >>

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NGC 3893 - Spiral Galaxy with LRN Type Transient AT 2023uhx

NGC 3893 with AT 2023uhx (Ursa Major) AT 2023uhx (Type: LRN) discovered 2023-10-07.816 UT by Koichi Itagaki Discovery magnitude 17.2 (Clear filter) vs DSS Archival Image  Luminous Red Nova based on its peak luminosity, and narrow Balmer and Fe II emission lines.  ( TNS 2023uhx)

NGC 3893 with AT 2023uhx - 2024-02-28 (T+143.2d) Image below (2024-02-28.016) was taken 143.2 days after discovery of 2023uhx Position of reported transient (very faint & barely visible) is shown by white cross-hairs Estimated Magnitude +18.5 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-28 00:32 UT (#1194185-89) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023uhx (NGC 3893) on Transients 2023 Page >>

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UGC 831 - Spiral Galaxy with Type IIb Supernova 2023wdd

UGC 831 with SN 2023wdd (Andromeda) SN 2023wdd (Type: IIb) discovered 2023-11-01.445 UT by ATLAS Alias: ATLAS23uvt Discovery Magnitude 17.96 (orange-ATLAS Filter) (AT 2023wdd, Candidate Supernova later confirmed as Type IIb Supernova)  ( TNS 2023wdd )

UGC 831 with SN 2023wdd - 2024-02-27 (T+118.4d) Image below (2024-02-27.805) was taken 118.4 days after discovery of 2023wdd Position of reported supernova (very faint) is shown by white cross-hairs Estimated Mag +17.9 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-27 19:28 UT (#1194015-19) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023wdd (in UGC 831) on Supernova 2023 Page >>

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UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut

UGC 3174 with SN 2023mut (Orion) SN 2023mut (Type: IIb) discovered 2023-07-11.180 UT by ASAS-SN  / GOTO Group Alias: ASASSN-23fh Discovery Magnitude 15.2 (g-SLOAN Filter)  ( TNS 2023mut )

UGC 3174 with SN 2023mut - 2024-02-27 (T+231.7d) Image below (2024-02-27.879) was taken 231.7 days after discovery of 2023mut Position of reported SN (fading) is indicated by white cross-hairs. Estimated Magnitude +17.5 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-27 21:14 UT (#1194112-16) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023mut (in UGC 3174) on Supernova 2023 Page >>

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UGC 11858 - Spiral Galaxy with Type Ia Supernova 2023rjj (non-detection)

UGC 11858 with SN 2023rjj (Cygnus) SN 2023rjj (Type: Ia) discovered 2023-09-05.340 UT by ALeRCE Alias: ZTF23abaxkwq Discovery Magnitude 18.17 (g-ZTF Filter)  ( TNS 2023rjj )

UGC 11858 with SN 2023rjj - 2024-02-28 (T+175.8d) Image below (2024-02-28.168) was taken 175.8 days after discovery of 2023rjj Position of reported transient (not visible) is indicated by white cross-hairs.

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-28 04:09 UT (#1194218-21) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 11858 with SN 2023rjj - Earlier Image, 2023-09-08 (T+3.6d) Image below (2023-09-08.900) was taken 3.6 days after discovery of 2023rjj Position of reported supernova (faint but distinct) is indicated by white cross-hairs. Measured Magnitude ? (unable to differentiate SN from nucleus)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-08 21:45 UT (#1141045-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023rjj (in UGC 11858) on Supernova 2023 Page >>

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UGC 12639 - Spiral Galaxy with Type II Supernova 2023jri

UGC 12639 with SN 2023jri (Pegasus) SN 2023jri (Type: II) discovered 2023-05-29.577 UT by ATLAS Alias: ATLAS23lqb Discovery Magnitude 16.48 (orange-ATLAS Filter)  ( TNS 2023jri )

UGC 12639 with SN 2023jri - 2024-02-27 (T+274.3d) Image below (2024-02-27.833) was taken 274.3 days after discovery of 2023jri Position of reported transient (likely no longer visible) is indicated by white cross-hairs. Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-27 20:07 UT (#1194036-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023jri (in UGC 12639) on Supernova 2023 Page >>

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