David's Astronomy Pages Images - Session 1201 (2024-03-27)

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Session Notes

62P/Tsuchinshan - Comet     AT 2023tsk - Type BL Transient AT 2024dsj - CV Type Transient     CGCG 217-021 - Spiral Galaxy with Type MP Transient AT 2023clc  (Attempt)     M101 - Spiral Galaxy with Type IIL Supernova 2023ixf     NGC 3206 - Spiral Galaxy with Type IIn Supernova 2024bch NGC 3443 - Spiral Galaxy with Type II Supernova 2024ehs NGC 4192A - Spiral Galaxy with Type II Supernova 2024exw NGC 4619 - Spiral Galaxy with Type II Supernova 2024drt NGC 6433 - Spiral Galaxy with Type Ia Supernova 2024efn     UGC 5886 - Spiral Galaxy with Type IIn Supernova 2024hw UGC 8630 - Spiral Galaxy with Type II Supernova 2024drv     Variable Stars (photometric monitoring) - R CrB, BL Lac      Nearby Stars (astrometric monitoring) - Groombridge 34

- Attempted all-night Session (5.6 hrs) . Session started after early evening cloud had cleared.     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 5.5°C (min) - CCD Temperature:   -15°/-20°C - Notes from 2024-03-27 >>     -

Observing Result

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62P/Tsuchinshan - Comet

62P/Tsuchinshan - 2024-03-28 (passing through Virgo) Sun Distance 1.67 AU (receeding) Earth Distance 0.68 AU (101.7 million km)		62P/Tsuchinshan - 2024-03-28 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -28.08 arcsec/hr, Dec -7.77 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 2 x 90s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 00:08 UT (#1201027-28) 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) 6 x 90s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 00:12 UT (#1201027-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 62P/Tsuchinshan on Comets 2023 Page >>
Images of 62P/Tsuchinshan on Comets 2024 Page >>

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AT 2023tsk - Type BL Transient

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AT 2024dsj - CV Type Transient

AT 2024dsj (Cassiopeia) AT 2024dsj (Type: CV) discovered 2024-02-28.787 UT by Gaia Alias: Gaia24ath Discovery Magnitude 15.25 (G-Gaia Filter) vs Historic Magnitude 15.03 +/- 0.02 SD  Gaia source fades by 0.2 mag TNS discovery report on TNS says Prior Non-Detection Limiting Mag 21.5 (2024-01-25 17:32) but Gaia data for the same date gives mag 15.26)  ( TNS 2024dsj | Gaia24ath )

AT 2024dsj - 2024-03-28 (T+28.3d) Image below (2024-03-28.085) was taken 28.3 days after discovery of 2024dsj Position of reported transient (faint) is shown by white cross-hairs Measured Magnitude +14.46 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 02:05 UT (#1201069-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024dsj on Transients 2024 Page >>

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CGCG 217-021 - Spiral Galaxy with Type MP Transient AT 2023clc (Attempt)

CGCG 217-021 with AT 2023clc (Canes Venatici) AT 2023clc (Type: MP) discovered 2023-02-22.276 UT by ATLAS Alias: ATLAS23cmd Discovery Magnitude 15.68 (cyan-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.06  ( TNS 2023clc )

CGCG 217-021 / PGC 46002 - Spiral Galaxy Alias : LEDA 46002

Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 03:40 UT (#1201095-98) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

CGCG 217-021 / PGC 46002 - Detail

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

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

CGCG 217-021 with AT 2023clc - 2024-03-28 (T+399.9d) Image below (2024-03-28.148) was taken 399.9 days after discovery of 2023clc Position of earlier transient (likely faded & no longer visible) 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 2024-03-28 03:40 UT (#1201095-98) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023clc (in CGCG 217-021) 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 - 2024-03-28 (T+313.3d) Image below (2024-03-28.030) was taken 313.3 days after discovery of 2023ixf Position of supernova (faint) is shown by white cross-hairs Measured Magnitude +15.93 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 00:51 UT (#1201043-47) 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 3206 - Spiral Galaxy with Type IIn Supernova 2024bch

NGC 3206 with SN 2024bch (Ursa Major) SN 2024bch (Type: IIn) discovered 2024-01-29.252 UT by Patrick Wiggins Alias: ATLAS24bmx, PS24aap, GOTO24hm Discovery Magnitude 15.5 ( Clear Filter)  ( TNS 2024bch )

NGC 3206 with SN 2024bch - 2024-03-28 (T+58.9d) Image below (2024-03-28.127) was taken 58.9 days after discovery of 2024bch Position of reported SN (distinct but fading slowly) is indicated by white cross-hairs. Measured Magnitude +14.23 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 03:12 UT (#1201079-83) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024bch (in NGC 3206) on Supernova 2024 Page >>

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NGC 3443 - Spiral Galaxy with Type II Supernova 2024ehs

NGC 3443 with SN 2024ehs (Leo) SN 2024ehs (Type: II) discovered 2024-03-15.470 UT by ATLAS Alias: ATLAS24dqq Discovery Magnitude 18.10 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.53   ( TNS 2024ehs )

NGC 3443 - Spiral Galaxy with SN 2024ehs (T+12.6d)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 01:36 UT (#1201057-61) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3443 with SN 2024ehs - 2024-03-28 (T+12.6d) Image below (2024-03-28.060) was taken 12.6 days after discovery of 2024ehs Position of reported supernova (distinct) is shown by white cross-hairs Measured Magnitude +14.89 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 01:36 UT (#1201057-61) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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

Images of SN 2024ehs (in NGC 3443) on Supernova 2024 Page >>

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NGC 4192A - Spiral Galaxy with Type II Supernova 2024exw

NGC 4192A with SN 2024exw (Coma Berenices) AT 2024exw (Type: II, z=0.007) discovered 2024-03-24.674 UT by Koichi Itagaki Alias: ATLAS24ekc Discovery Magnitude 15.9 (Clear Filter) vs Prior Non-Detection in DSS Image  ( TNS 2024exw )

NGC 4192A - Spiral Galaxy with SN 2024exw (T+3.3d)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-27 23:54 UT (#1201021-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4192A with SN 2024exw - 2024-03-27 (T+3.3d) Image below (2024-03-27.990) was taken 3.3 days after discovery of 2024exw Position of reported supernova (distinct) is shown by white cross-hairs Measured Magnitude +15.09 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-27 23:54 UT (#1201021-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024exw (in NGC 4192A) on Supernova 2024 Page >>

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NGC 4619 - Spiral Galaxy with Type II Supernova 2024drt

NGC 4619 with SN 2024drt (Canes Venatici) SN 2024drt (Type: II) discovered 2024-03-02.486 UT by ATLAS Alias: ATLAS24dcr, ZTF24aagmhtq Discovery Magnitude 17.93 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Mag 18.46 (g-ZTF Filter)  ( TNS 2024drt )

NGC 4619 with SN 2024drt - 2024-03-28 (T+25.5d) Image below (2024-03-28.016) was taken 25.5 days after discovery of 2024drt Position of reported SN (fairly distinct but fading) is indicated by white cross-hairs. Estimated Magnitude +15.8 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 00:32 UT (#1201036-40) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024drt (in NGC 4619) on Supernova 2024 Page >>

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NGC 6433 - Spiral Galaxy with Type Ia Supernova 2024efn

NGC 6433 with SN 2024efn (Hercules) SN 2024efn (Type: Ia) discovered 2024-03-12.496 UT by CRTS Alias: SNhunt463 Discovery Magnitude 19.0 (V-crts-CRTS Filter) vs Prior Non-Detection Limiting Magnitude 21.0  ( TNS 2024efn )

NGC 6433 - Spiral Galaxy with SN 2024efn (T+15.5d)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-27 23:33 UT (#1201012-16) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 6433 with SN 2024efn - 2024-03-27 (T+15.5d) Image below (2024-03-27.975) was taken 15.5 days after discovery of 2024efn Position of reported supernova (faint but distinct) is shown by white cross-hairs Measured Magnitude +15.70 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-27 23:33 UT (#1201012-16) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024efn (in NGC 6433) on Supernova 2024 Page >>

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UGC 5886 - Spiral Galaxy with Type IIn Supernova 2024hw

UGC 5886 with AT 2024hw (Sextans) AT 2024hw (Type: unk) discovered 2024-01-05.357 UT by ZTF Alias: ZTF24aaaibep Discovery Magnitude 17.394 (i-ZTF Filter)  ( TNS 2024hw )

UGC 5886 with SN 2024hw - 2024-03-28 (T+82.7d) Image below (2024-03-28.052) was taken 82.7 days after discovery of 2024hw Position of reported transient (faint) is indicated by white cross-hairs. Estimated Magnitude +17.0 (Clear Filter) Poor quality image (poor sky transparency / bright background)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 01:20 UT (#1201052-54) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024hw (in UGC 5886) on Supernova 2024 Page >>

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UGC 8630 - Spiral Galaxy with Type II Supernova 2024drv

UGC 8630 with SN 2024drv (Canes Venatici) SN 2024drv (Type: II) discovered 2024-03-02.513 UT by ATLAS Alias: ATLAS24dct Discovery Magnitude 16.56 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Mag 18.86  ( TNS 2024drv )

UGC 8630 with SN 2024drv - 2024-03-28 (T+25.6d) Image below (2024-03-28.163) was taken 25.6 days after discovery of 2024drv Position of reported SN (distinct) is indicated by white cross-hairs. Measured Magnitude +15.23 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-03-28 04:03 UT (#1201102-06) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024drv (in UGC 8630) on Supernova 2024 Page >>

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