David's Astronomy Pages CCD Images - Session 1174 (2023-12-17)

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Session Notes

12P/Pons-Brooks - Comet 103P/Hartley - Comet C/2017 K2 (PANSTARRS) - Comet     Nova Cas 2021 - Nova (V1405 Cas)     AT 2023tjz - Transient / Carbon Star AT 2023ttx - CV Type Transient AT 2023yyz - Type YSO Transient AT 2023zzs - CV Type Transient AT2023aaiv - GRB Afterglow Transient (Attempt)     M31 - Spiral Galaxy with Type EGN Transient AT 2023yij M101 - Spiral Galaxy with Type IIL Supernova 2023ixf     NGC 1232 - Spiral Galaxy (ARP 41) NGC 2642 - Spiral Galaxy with Type Ic Supernova 2023aaby NGC 3690 - Spiral Galaxy with Type Ia Supernova 2023wrk     UGC 68 - Spiral Galaxy with Type Ia Supernova 2023xqn UGC 4582 - Spiral Galaxy with Type II Supernova 2023twg       - AT2023twu attempt failed (due to cloud/bad guiding)     Variable Stars (photometric monitoring) - BL Lac      Nearby Stars (astrometric monitoring) - DX Cnc

- Attempted All-Night Session (8.8 hrs)     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 5°C (min) - CCD Temperature:   -10°/-15° C - Notes from 2023-12-17 >>     -

12P/Pons-Brooks - Comet (Outburst)

12P/Pons-Brooks - 2023-12-18 (passing through Lyra) Sun Distance 2.18 AU (approaching) Earth Distance 2.42 AU (361.6 million km)		12P/Pons-Brooks - 2023-12-18 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 86.93 arcsec/hr, Dec -3.66 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 90s exposure (single frame), 3x3 binning, Clear Filter 2023-12-18 05:11 UT (#1174171) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, log cale, cropped) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 05:16 UT (#1174171-76) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
12P/Pons-Brooks - 2023-12-18 Detail		12P/Pons-Brooks - 2023-12-18 Detail
Annotated false-colour CCD Image (50% size, log scale) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 05:16 UT (#1174171-76) 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) Image details as left
Images of 12P/Pons-Brooks on Comets 2023 Page >>

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103P/Hartley - Comet

103P/Hartley - 2023-12-18 (passing through Hydra) Sun Distance 1.39 AU AU (receeding) Earth Distance 0.61 AU (91.8 million km)		103P/Hartley - 2023-12-18  Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -24.55 arcsec/hr, Dec -24.64 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 01:48 UT (#1174120-21) 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) 9 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 01:52 UT (#1174120-28) 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 >>

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C/2017 K2 (PANSTARRS) - Comet

C/2017 K2 (PANSTARRS) - 2023-12-18 (passing through Orion) Sun Distance 4.49 AU (receeding) Earth Distance 3.60 AU (538.3 million km)		C/2017 K2 (PANSTARRS) - 2023-12-18 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -41.62 arcsec/hr, Dec 18.11 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 00:12 UT (#1174053-55) 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) 9 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 00:16 UT (#1174053-61) 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 >>

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Nova Cas 2021 - Nova (V1405 Cas)

Nova Cas 2021 (Cassiopeia) Nova in Cassiopeia discovered 2021-03-18.4236,  by Yuji Nakamura (Japan) Magnitude at discovery +9.6 (unfiltered CCD) AT2021hkn (Type: Nova) reported by 2021/03/30.055 UT by Gaia Alias: Gaia21bpe, AT2021hkn, V1405 Cas

Nova Cas 2021 - 2023-12-18 (T+1004.6d) Image below (2023-12-18.025) was taken 1004.6 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +12.14 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 30s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 00:37 UT (#1174068-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Cas 2021 (V1405 Cas) Spectra - 2023-12-18 (T+1004.6d)

Spectra produced in AstroMain using Image taken with Star Analyser 200 5 x 90s exposure (average combine), 2x2 binning, S Filter 2023-12-18 00:43 UT (#1174073-77) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova Cas 2021 on Novae Page >>

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AT 2023tjz - Transient / Carbon Star

AT 2023tjz (Orion) AT 2023tjz (Type: unk) discovered 2023-09-17.895 UT by Gaia Alias: Gaia23cnk Discovery magnitude 12.44 (G-Gaia filter) vs Historic Mag 10.71 Known Carbon star fades by 1.5 mag  ( TNS 2023tjz | Gaia23cnk )

AT 2023tjz - 2023-12-18 (T+91.2d) Image below (2023-12-18.051) was taken 91.2 days after discovery of 2023tjz Position of earlier reported transient (distinct, fading ?) is shown by white cross-hairs Measured magnitude +12.73 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 01:15 UT (#1174087-88) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023tjz on Transients 2023 Page >>

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AT 2023ttx - CV Type Transient

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AT 2023yyz - Type YSO Transient

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AT 2023zzs - CV Type Transient

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AT2023aaiv - GRB Afterglow Transient (Attempted Observation)

AT 2023aaiv (Cassiopeia) AT 2023aaiv (Type: Afterglow) discovered 2023-12-15.437 UT by MASTER Alias: MASTER OT J003857.42+573849.6, GRB 231215A Discovery Magnitude 16.5 (Clear Filter) Optical counterpart to GRB 231215A  ( TNS 2023aaiv )

AT 2023aaiv - 2023-12-17 (T+2.5d) Image below (2023-12-17.954) was taken 2.5 days after discovery of 2023aaiv Position of earlier reported transient (no longer visible) is shown by white circle

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-17 23:03 UT (#1174023-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2023aaiv - 2023-12-17 Detail (T+2.5d)

Annotated Negative CCD Image (250% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-17 23:03 UT (#1174023-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023aaiv on Transients 2023 Page >>

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M31 - Spiral Galaxy with Type EGN Transient AT 2023yij

M31 with Nova AT 2023yij (Andromeda) AT 2023yij (Type: EGN) discovered 2023-11-23.799 UT by Castellani Flavio Alias: OMB-PNV21, PNV J00424587+4121379, Gaia23dnb Discovery Mag 19.1 (Clear Filter) Gaia,  2023-12-04 00:05  18.12 (T+10.2d) Gaia,  2023-12-18 06:09  19.31 (T+24.5d) ( TNS 2023yij | Gaia23dnb)

Nova M31 AT 2023yij - 2023-12-17 (T+24.1d) Image below (2023-12-17.938) was taken 24.1 days after discovery of 2023yij Position of reported transient (not visible) is shown by white cross-hairs Non Detection, limiting magnitude +17.2 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-17 22:35 UT (#1174012-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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

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M101 - Spiral Galaxy with Type IIL Supernova 2023ixf

M101 with SN 2023ixf (Ursa Major) SN 2023ixf (Type: IIL) discovered 2023-05-19.727 UT by Koichi Itagaki Alias: ZTF23aaklqou, AT2023iyi, AT2023jgd, AT2023jfz, PSN J14033858+5418421, PS23dij Discoverer Mag 14.9 (Clear filter)  ( Rochester Supernova site | TNS 2023ixf ) SN 2023ixf (Type: IIL) discovered 2023-05-19.727 UT by Koichi Itagaki at Mag 14.9 is located near M101's prominant star-forming region NGC 5461.  The supernova resulted from a exploding red supergiant and lies just 21 million light years away.  It's the closest core-collapse supernova to us since SN 1993J which lit up M81 (some 12 million ly away) in Spring 1993. The SN is designated of type II-L (L for 'linear') , which is characterised by a rapid rise to maximum brightness  followed by a slow and gradual decrease, that is thought to be brought about by ejection of the dead stars' outer hydrogen shell. (from Article "Summer's Super Supernova", AstNow Magazine, Sep 2023, pp 36-39)

M101 with SN 2023ixf - 2023-12-17 (T+212.2d) Image below (2023-12-17.970) was taken 212.2 days after discovery of 2023ixf Position of supernova (distinct) is shown by white cross-hairs Measured Magnitude +14.71 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-17 23:25 UT (#1174032-35) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023ixf (M101) on Supernova 2023 Page

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NGC 1232 - Spiral Galaxy (ARP 41)

NGC 1232 / ARP 41 (Eridanus) Alias: Hidden Treasures 11, Eye of God Galaxy  [ ARP Galaxies ] [ Hidden Treasures ]

NGC 1232 / ARP 41- Wide View NGC 1232 (PGC 11819 catalog mag +10.7) NGC 1232A (PGC 11834 catalog mag +15.3)

Annotated CCD Image (50% size, square root scale) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-17 22:13 UT (#1174006-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Negative CCD Image (50% size, square root scale) Image details as above

NGC 1232 / ARP 41- Detail

Annotated CCD Image (100% size, square root scale, cropped) Image details as above

False Colour CCD Image (100% size, square root scale, cropped) Inverse Spectrum Image details as above

Negative CCD Image (100% size, square root scale, cropped) Image details as above

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NGC 2642 - Spiral Galaxy with Type Ic Supernova 2023aaby

NGC 2642 with SN 2023aaby (Hydra) SN 2023aaby (Type: Ic) discovered 2023-12-14.540 UT by ATLAS Alias: ATLAS23xjl Discovery Magnitude 17.94 (cyan-ATLAS filter)  ( TNS 2023aaby )

NGC 2642 - Spiral Galaxy with SN 2023aaby (T+3.6d)

Annotated CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 02:20 UT (#1174139-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 2642 - Spiral Galaxy, detail

Negative CCD Image (150% size, square root scale, cropped) Image details as above

NGC 2642 with SN 2023aaby - 2023-12-18 (T+3.6d) Image below (2023-12-18.094) was taken 3.6 days after discovery of 2023aaby Position of reported SN (distinct) is indicated by white cross-hairs. Measured Magnitude +15.17 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 02:20 UT (#1174139-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Negative CCD Image (125% size, square root scale, cropped) Image details as above

Images of SN 2023aaby (in NGC 2642) on Supernova 2023 Page >>

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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 - 2023-12-18 (T+43.9d) Image below (2023-12-18.124) was taken 43.9 days after discovery of 2023wrk Position of SN (distinct, fading) is shown by white cross-hairs Measured Magnitude +14.48 (C Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 03:07 UT (#1174153-57) 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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UGC 68 - Spiral Galaxy with Type Ia Supernova 2023xqn

UGC 68 with SN 2023xqn (Pegasus) SN 2023xqn (Type: Ia) discovered 2023-11-13.222 UT by ATLAS Alias: ATLAS23vno Discovery magnitude 18.17 (cyan-ATLAS Filter)  ( TNS 2023xqn )

UGC 68 with SN 2023xqn - 2023-12-17 (T+34.8d) Image below (2023-12-17.987) was taken 34.8 days after discovery of 2023xqn Position of reported SN (not clearly distinguishable) is shown by white cross-hairs Measure Magnitude +14.90 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-17 23:47 UT (#1174039-42) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023xqn (in UGC 68) on Supernova 2023 Page >>

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UGC 4582 - Spiral Galaxy with Type II Supernova 2023twg

UGC 4582 with SN 2023twg (Cancer) SN 2023twg (Type: II) discovered 2023-10-02.237 UT by GOTO Alias: GOTO23aon, Gaia23cwy Discovery Magnitude 18.22 (L-GOTO Filter)  ( TNS 2023twg | Gaia23cwy )

UGC 4582 with SN 2023twg - 2023-12-18 (T+76.9d) Image below (2023-12-18.108) was taken 76.9 days after discovery of 2023twg Position of reported supernova (faint but distinct) is shown by white cross-hairs Estimated Mag  +18.1 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-18 02:45 UT (#1174146-50) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Annotated CCD Image (200% size, square root scale, cropped) Image details as above

Images of SN 2023twg (in UGC 4582) on Supernova 2023 Page >>

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