David's Astronomy Pages Images - Session 1233 (2024-08-27)

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Session Notes

AT 2023twq - Transient AT 2023yyz - Type YSO Transient AT 2023abtv - CV Type Transient AT 2024efg - CV Type Transient AT 2024rwq - CV Type Transient AT 2024rzx - CV Type Transient     LEDA 1675358 - Galaxy with Type Ia Supernova 2024rxa M31 - Spiral Galaxy with EGN Transient AT 2024ssq M33 - Spiral Galaxy with Transient AT 2024sgd (Nova M33 2024-08a?) M33 - Spiral Galaxy with Nova M33 2024-08a?     NGC 251 - Spiral Galaxy with Type II Supernova 2023rky NGC 6384 - Spiral Galaxy with Type Ia-02cx Supernova 2024pxl     UGC 1595 - Spiral Galaxy with Type IIP Supernova 2024kcu UGC 6265 - Spiral Galaxy with Type Ia-91T Supernova 2023wcw UGC 12308 - Spiral Galaxy with Type II Supernova 2023hlu         Variable Stars (photometric monitoring) - None     Nearby Stars (astrometric monitoring) - None

- All Night Session (5.9 hrs)     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 13.5°C (min) - CCD Temperature:   -10° C - Notes from 2024-08-27 >>     - Aurora Images/Video from night, 2024-08-27 >> North -

Observing Result

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AT 2023twq - Transient

AT 2023twq (Delphinus) AT 2023twq (Type: unk) discovered 2023-09-30.538 UT by Gaia Alias: Gaia23crv Discovery Magnitude 16.56 (g-Gaia Filter) ( vs historic Non-Detection) Apparently hostless blue transient  ( TNS 2023twq, Gaia23crv)

AT 2023twq - 2024-08-27 (T+332.4d) Image below (2024-08-27.987) was taken 332.4 days after discovery of 2023twq Position of earlier transient (finat) is shown by white cross-hairs Measured magnitude +17.07 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-27 23:50 UT (#1233054-58) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023twq on Transients 2023 Page >>

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AT 2023yyz - Type YSO 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 - 2024-08-27 (T+245.0d) Image below (2024-08-27.941) was taken 245.0 days after discovery of 2023abtv Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +12.08 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-27 22:38 UT (#1233027-31) 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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AT 2024efg - CV Type Transient

AT 2024efg (Cygnus) AT 2024efg (Type: CV) discovered 2024-03-10.301 UT by Gaia Alias: Gaia24axs Alerting Magnitude 16.62 (G-Gaia Filter) vs Historic Magnitude 18.65 +/- 1.08 (SD) Outburst in candidate CV MGAB-V305  ( TNS 2024efg | Gaia23duv )

AT 2024efg - 2024-08-28 (T+170.7d) Image below (2024-08-28.002) was taken 170.7 days after discovery of 2024efg Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 00:06 UT (#1233062-66) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024efg on Transients 2024 Page >>

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AT 2024rwq - CV Type Transient

AT 2024rwq (Lyra) AT 2024rwq (Type: CV) discovered 2024-08-07.328 UT by ATLAS Alias: ATLAS24mrh Discovery magnitude 13.50 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.56  ( TNS 2024rwq )

AT 2024rwq - 2024-08-27 (T+20.6d) Image below (2024-08-27.918) was taken 20.6 days after discovery of 2024rwq Position of reported transient (fading) is shown by white cross-hairs Measured Magnitude +15.19 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-27 22:04 UT (#1233014-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024rwq - Reference Image Position of reported transient is shown by mauve cross-hairs The detailed Insert shows a very faint star at the position of AT 2024rwq

PanSTARRs colour image captured using Aladin

Images of AT 2024rwq on Transients 2024 Page >>

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AT 2024rzx - CV Type Transient

AT 2024rzx (Bootes) AT 2024rzx (Type: CV) discovered 2024-08-11.747 UT by MASTER Alias: MASTER OT J144401.19+220053.8 Discovery magnitude 12.5 (Clear Filter) vs Prior Non-Detection Limiting Magnitude 19.6  ( TNS 2024rzx )

AT 2024rzx - 2024-08-27 (T+16.2d) Image below (2024-08-27.908) was taken 16.2 days after discovery of 2024rzx Position of reported transient (distinct but fading) is shown by white cross-hairs Measured Magnitude +16.04 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-08-27 21:52 UT (#1233006-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024rzx on Transients 2024 Page >>

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LEDA 1675358 - Galaxy with Type Ia Supernova 2024rxa

LEDA 1675358 with SN 2024rxa (Pegasus) SN 2024rxa (Type: Ia) discovered 2024-08-07.325 UT by ZTF Alias: ZTF22abbgyvi Discovery magnitude 20.08 (g-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 20.45  ( TNS 2024rxa )

LEDA 1675358 - Galaxy

Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 01:49 UT (#1233098-101) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

LEDA 1675358 with SN 2024rxa - 2024-08-28 (T+20.7d) Image below (2024-08-28.071) was taken 20.7 days after discovery of 2024rxa Position of reported transient (distinct but fading) is shown by white cross-hairs Measured Magnitude (SN + Galaxy) +15.46 (Clear Filter)

Annotated CCD Image (175% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 01:49 UT (#1233098-101) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024rxa (in LEDA 1675358 ) on Supernova 2024 Page >>

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M31 - Spiral Galaxy with EGN Transient AT 2024ssq

M31 with AT 2024ssq (Andromeda) AT 2024ssq (Type: Nova) discovered 2024-08-24.996 UT by Italian Supernovae Search Project Discovery Mag 16.4 (L_ filter)  ( TNS 2023ttu )

M31 - Spiral Galaxy with AT 2024ssq Cam2 Reference Image, Position of AT 2024ssq is shown by blue circle Limits of M31 Spiral Galaxy shown by white arc

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2024-08-28 00:53 UT (01:53 LT) TS 80mm APO, ZWO ASI178MC

M31 - Spiral Galaxy with AT 2024ssq (T+3.0d) Position of reported transient (very faint) is shown by white circle

Annotated CCD Image (70% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 01:06 UT (#1233083-87) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2024ssq - 2024-08-28 (T+3.0d) Image below (2024-08-28.039) was taken 3.0 days after discovery of 2024ssq Position of reported transient (very faint) is shown by white cross-hairs Estimated Magnitude +18.1 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 01:06 UT (#1233083-87) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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

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M33 - Spiral Galaxy with Transient AT 2024sgd (alias Nova M33 2024-08a?)

M33 with AT 2024sgd (Triangulum) Alias: Nova M33 2024-08a? AT 2024sgd (Type: unk) discovered 2024-08-15.373 UT by GEOTS Alias: Nova M33 2024-08a?, GEOTS-Balaji-2024-018, PNV J01340281+3042406 Discovery Magnitude 17.2 (Clear Filter)  ( TNS 2024sgd )

M33 - Spiral Galaxy with AT 2024sgd Cam2 Reference Image, Position of AT 2024sgd is shown by blue circle Limits of M34 Spiral Galaxy shown by white/pale blue ellipse

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2024-08-28 02:00 UT (03:00 LT) TS 80mm APO, ZWO ASI178MC

M33 - Spiral Galaxy with AT 2024sgd (T+12.7d) Position of reported transient (very faint) is shown by white cross-hairs

Annotated CCD Image (70% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 02:12 UT (#1233104-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M33 with AT 2024sgd - 2024-08-28 (T+12.7d) Image below (2024-08-28.086) was taken 12.7 days after discovery of 2024sgd Position of reported transient (very faint) is shown by white cross-hairs Measured Magnitude +17.95 (Clear Filter) Equivalence of transient position indicates that AT 2024sgd = Nova M33 2024-08a?

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 02:12 UT (#1233104-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova M33 2024-08a? - 2024-08-27 (T+12.6d) Image below (2024-08-27.972) was taken 12.6 days after discovery of Nova M33 2024-08a? Position of reported transient (very faint) is shown by white cross-hairs  Measured Magnitude +18.15 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-27 23:28 UT (#1233047-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024sgd (in M33) on Transients 2024 Page >>

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

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NGC 251 - Spiral Galaxy with Type II Supernova 2023rky

NGC 251 with SN 2023rky (Pisces) SN 2023rky (Type: II) discovered 2023-09-06.336 UT by ATLAS Alias: ZTF23abbccir Discovery Magnitude 18.66 (g-ZTF Filter)  ( TNS 2023rky )

NGC 251 with SN 2023rky - 2024-08-27 (T+356.6d) Image below (2024-08-27.956) was taken 356.6 days after discovery of 2023rky Position of earlier SN (faded & no longer visible) is indicated by white cross-hairs.

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-27 23:05 UT (#1233040-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 251 with SN 2023rky - Detail

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

Images of SN 2023rky (in NGC 251) on Supernova 2023 Page >>

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NGC 6384 - Spiral Galaxy with Type Ia-02cx Supernova 2024pxl

NGC 6384 with SN 2024pxl (Ophiuchus) SN 2024pxl (Type: Ia-02cx) discovered 2024-07-23.274 UT by ATLAS Alias: ATLAS24lpk, ZTF24aawrofs Discovery Magnitude 14.58 (L-GOTO Filter) vs Prior Non-Detection Limiting Magnitude 19.5  ( TNS 2024pxl )

NGC 6384 with SN 2024pxl - 2024-08-27 (T+35.7d) Image below (2024-08-27.926) was taken 35.7 days after discovery of 2024pxl Position of reported SN (faint, fading) is indicated by white cross-hairs. Measured Magnitude +16.32 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-27 22:22 UT (#1233020-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024pxl (in NGC 6384) on Supernova 2024 Page >>

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UGC 1595 - Spiral Galaxy with Type IIP Supernova 2024kcu

UGC 1595 with SN 2024kcu (Aries) SN 2024kcu (Type: IIP, z = 0.02) discovered 2024-06-01.482 UT by ZTF Alias: ZTF24aaqajjb Discovery Magnitude 16.97 (r-ZTF Filter)  ( TNS 2024kcu )

UGC 1595 with AT 2024kcu - 2024-08-28 (T+87.6d) Image below (2024-08-28.055) was taken 87.6 days after discovery of 2024kcu Position of earlier supernova (faded & no longer visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +19.0 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 01:28 UT (#1233090-94) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024kcu (in UGC 1595) on Supernova 2024 Page >>

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UGC 6265 - Spiral Galaxy with Type Ia-91T Supernova 2023wcw

UGC 6265 with SN 2023wcw (Ursa Major) SN 2023wcw (Type: Ia-91T, z= 0.032834) discovered 2023-11-01.491 UT by ZTF Alias: ZTF23abnoilr Discovery Magnitude 17.14 (r-ZTF Filter)  ( TNS 2023wcw )

UGC 6265 with SN 2023wcw - 2024-08-28 (T+300.6d) Image below (2024-08-28.130) was taken 300.6 days after discovery of 2023wcw Position of earlier supernova (not visible) is shown by white cross-hairs Poor quality image (poor S/N)

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 03:17 UT (#1233121-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023wcw (in UGC 6265) on Supernova 2023 Page >>

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UGC 12308 - Spiral Galaxy with Type II Supernova 2023hlu

UGC 12308 with SN 2023hlu (Pegasus) SN 2023hlu (Type: II) discovered 2023-05-01.410 UT by ASAS-SN Alias: ASASSN-23dn, ATLAS23jys Discovery Magnitude 16.0 (g-Sloan Filter) z (redshift) = 0.0136  ( TNS 2023hlu )

UGC 12308 with SN 2023hlu - 2024-08-28 (T+484.6d) Image below (2024-08-28.024) was taken 484.6 days after discovery of 2023hlu Position of earlier SN (faded & no longer visible) is indicated by white cross-hairs. Non-Detection Limiting Magnitude +19.0 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-08-28 00:43 UT (#1233076-80) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023hlu (in UGC 12308) on Supernova 2023 Page >>

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