David's Astronomy Pages CCD Images - Session 1192 (2024-02-25)

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Session Notes

12P/Pons-Brooks - Comet 65P/Gunn - Comet (non-detection) 103P/Hartley - Comet C/2017 K2 (PANSTARRS) - Comet C/2021 F1 (Lemmon-PANSTARRS) - Comet (non-detection)     YZ Cnc - Cataclysmic Variable Star UGSU     AT 2023ati - Transient (non-detection) AT2023cxz - CV Type Transient (non-detection) AT 2023tsk - Type BL Transient AT 2023abtv - CV Type Transient     CGCG 119-104 - Spiral Galaxy with Type Ia Supernova 2024cdi IC 4305 - Elliptical Galaxy with Type Ia Supernova 2023edc (non-detection)     NGC 3893 - Spiral Galaxy with LRN Type Transient AT 2023uhx     PGC 23705 - Spiral Galaxy SN 2023iy - Type Ia Supernova in WISEA Galaxy (non-detection)     UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut UGC 11858 - Spiral Galaxy with Type Ia Supernova 2023rjj (non-detection)       - UGC 12639 w/SN 2023jri attempt  failed (due to cloud)     Variable Stars (photometric monitoring) - YZ Cnc, GW Ori      Nearby Stars (astrometric monitoring) - HH And

- Attempted All Night Session (10.1 hrs) with several interruptions by cloud & rain showers     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 0.5°C (min) - CCD Temperature:   -20°/25°C - Notes from 2024-02-25 >>     -

12P/Pons-Brooks - Comet (Outburst)

12P/Pons-Brooks - 2024-02-25 (passing through  Andromeda) Sun Distance 1.26 AU (approaching) Earth Distance 1.71 AU (256.4 million km)		12P/Pons-Brooks -  2024-02-25 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 188.59 arcsec/hr, Dec -25.83 arcsec/hr)
Annotated CCD Image (50% size, log scale) 90s exposure (single frame), 3x3 binning, Clear Filter 2024-02-25 19:37 UT (#1192012) 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) 3 x 90s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 19:40 UT (#1192012-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
12P/Pons-Brooks - 2024-02-25 Detail		12P/Pons-Brooks - 2024-02-25 Detail
Annotated false-colour CCD Image (50% size, log scale) 3 x 90s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 19:40 UT (#1192012-14) 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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65P/Gunn - Comet (non-detection)

65P/Gunn - 2024-02-26 (passing through Virgo) Sun Distance 3.64 AU Earth Distance 2.84 AU (424.7 million km) Expected position of comet (not visible) is indicated by white circle Poor quality image (due to bright uneven sky background)		65P/Gunn - 2024-02-26 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -9.69 arcsec/hr, Dec 6.99 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2024-02-26 00:19 UT (#1192117-21) 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 65P/Gunn on Comets 2024 Page >>

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103P/Hartley - Comet

103P/Hartley - 2024-02-25 (passing through Monoceros) Sun Distance 1.99 AU AU (receeding) Earth Distance 1.13 AU (169.8 million km)		103P/Hartley - 2024-02-25  Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -0.75 arcsec/hr, Dec 34.53 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 21:13 UT (#1192064-66) 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) 8 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 21:17 UT (#1192064-72) 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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C/2017 K2 (PANSTARRS) - Comet

C/2017 K2 (PANSTARRS) -  2024-02-25 (passing through Orion) Sun Distance 5.10 AU (receeding) Earth Distance 4.85 AU (725.6 million km)		C/2017 K2 (PANSTARRS) -  2024-02-25 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -3.47 arcsec/hr, Dec 20.28 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 19:53 UT (#1192026-28) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, square root scale, cropped) 7 x 45s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 19:55 UT (#1192026-34) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C2017 K2 (PANSTARRS) on Comets 2021 Page >>
Images of C2017 K2 (PANSTARRS) on Comets 2022 Page >>
Images of C2017 K2 (PANSTARRS) on Comets 2023 Page >>
Images of C2017 K2 (PANSTARRS) on Comets 2024 Page >>

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C/2021 F1 (Lemmon-PANSTARRS) - Comet (non-detection)

C/2021 F1 (Lemmon-PANSTARRS) - 2024-02-25 (passing through Octans)  - bug ! Sun Distance 7.69 AU Earth Distance 7.78 AU (1,164.4 million km) Expected position of comet (not visible) is indicated by white circle Comet is too far to be seen even if sky quality was better		C/2021 F1 (Lemmon-PANSTARRS) - 2024-02-25 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -9.69 arcsec/hr, Dec 6.99 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 21:43 UT (#1192087-91) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Negative CCD Image (100% size, square root scale, cropped) Image details as left
Images of C/2021 F1 (Lemmon-PANSTARRS) on Comets 2024 Page >>

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YZ Cnc - Cataclysmic Variable Star UGSU

YZ Cnc (Cancer) GCVS Variable Star Period 11-12d, mag +10.5 to +16 range

YZ Cnc Position of GCVS YZ Cnc is shown by white cross-hairs

Annotated CCD Image (70% size, linear scale) 5 x 30s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 21:29 UT (#1192075-79) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

YZ Cnc - 2024-02-25 Position of GCVS YZ Cnc is shown by white cross-hairs Measured Magnitude +13.7 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 30s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 21:29 UT (#1192075-79) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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AT 2023ati - Transient (non-detection)

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

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AT 2023tsk - Type BL Transient

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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 - 2024-02-26 (T+61.2d) Image below (2024-02-26.201) was taken 61.2 days after discovery of 2023abtv Position of reported transient (bright) is shown by white cross-hairs Measured Magnitude +11.91 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-26 04:52 UT (#1192152-56) 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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CGCG 119-104 - Spiral Galaxy with Type Ia Supernova 2024cdi

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IC 4305 - Elliptical Galaxy with Type Ia Supernova 2023edc (non-detection)

IC 4305 with SN 2023edc (Canes Venatici) SN 2023edc (Type: Ia) discovered 2023-03-28.518 UT by PS1 Alias: PS23bcb Discovery Mag 18.12 (w-PI Filter)  ( Rochester Supernova site | TNS 2023edc )

IC 4305 with SN 2023edc - 2024-02-26 (T+334.5d) Image below (2024-02-26.019) was taken 334.5 days after discovery of 2023edc Position of earlier SN (no longer visible) is shown by white cross-hairs

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-26 00:34 UT (#1192124-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

IC 4305 with SN 2023edc - Earlier Image 2023-04-02 (T+5.5d) Image below (2023-04-02.980) was taken 5.5 days after discovery of 2023edc Position of reported SN (distinct) is shown by white cross-hairs

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-04-02 23:38 UT (#1110096-99) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023edc (IC 4305) on Supernova 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 - 2024-02-26 (T+141.2d) Image below (2024-02-26.049) was taken 141.2 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) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-26 01:13 UT (#1192138-39) 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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SN 2023iy - Type Ia Supernova in WISEA J075804.09+562628.0 (non-detection)

SN 2023iy in WISEA Galaxy (Lynx) In WISEA J075804.09+562628.0 SN 2023iy (Type: Ia) discovered 2023-01-12.885 UT by XOSS Alias: PSP23A, ZTF23aaaasoh Discovery Mag 18.12 (w-PI Filter)  ( TNS 2023iy )

WISEA J075804.09+562628.0 - Galaxy WISEA Galaxy J075804.09+562628.0 is at centre of image Other galaxies in FOV are NGC 2468 (catalog mag +15.0) & PGC 2536730 (catalog mag +17.2)

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-26 00:01 UT (#1192110-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2023iy - 2024-02-25 (T+409.1d) Image below (2024-02-25.994) was taken 409.1 days after discovery of 2023iy Position of earlier SN (no longer visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.0 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-26 00:01 UT (#1192110-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023iy (in WISEA Galaxy) on Supernova 2023 Page >>

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PGC 23705 - Spiral Galaxy

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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 - 2024-02-25 (T+229.7d) Image below (2024-02-25.838) was taken 229.7 days after discovery of 2023mut Position of reported SN (fading) is indicated by white cross-hairs. Estimated Magnitude +17.4 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-25 20:13 UT (#1192037-40) 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 - 2024-02-26 (T+173.8d) Image below (2024-02-26.181) was taken 173.8 days after discovery of 2023rjj Position of reported transient (not visible) is indicated by white cross-hairs. Poor quality image (bright moonlit skies, single frame)

Annotated CCD Image (150% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2024-02-26 04:20 UT (#1192148) 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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