David's Astronomy Pages Images - Session 1176 (2023-12-19)

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Images (S1177)

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Session Notes

AT 2023tdi - Type BL Transient (QSO B1028+511) AT 2023aaky - CV Type Transient (Near NGC 957)     CGCG 182-071 - Galaxy with Type Ia Supernova 2023emd M33 - Spiral Galaxy with EGN Type Transient AT 2023ypg M98 - Spiral Galaxy     NGC 5853 - Spiral Galaxy NGC 6745 - Spiral Galaxy with Transient AT 2023ucy     UGC 530 - Spiral Galaxy with Type Ia Supernova 2023yma UGC 5764 - Irregular Galaxy (ARP 267) UGC 6265 - Spiral Galaxy with Type Ia-91T Supernova 2023wcw       - AT2023ud attempt failed (single frame/bad guiding)     Variable Stars (photometric monitoring) - RX And, RR Leo      Nearby Stars (astrometric monitoring) - None

- Attempted All-Night Session (13.5 hrs)     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 3.5°C (min) - CCD Temperature:   -20° C - Notes from 2023-12-19 >>     -

AT 2023tdi - Type BL Transient (QSO B1028+511)

AT 2023tdi (Ursa Major) AT 2023tdi (Type: BL) discovered 2023-09-15.424 UT by Gaia Alias: Gaia23ckv,  QSO B1028+511 Discovery Mag 16.34 (G-Gaia Filter) vs Historic Mag 14.06 Known BL Lac type object (QSO B1028+511) brightens by 0.5 mag ( TNS 2023tdi | Gaia23ckv )

AT 2023tdi - 2023-12-20 (T+95.6d) Image below (2023-12-20.065) was taken 95.6 days after discovery of 2023tdi Position of reported transient (faint, stable) is shown by white cross-hairs Measured Magnitude +15.60 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-20 01:43 UT (#1176040-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023tdi on Transients 2023 Page >>

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AT 2023aaky - CV Type Transient (Near NGC 957)

AT 2023aaky (Perseus) AT 2023aaky (Type: CV) discovered 2023-12-15.096 UT by Gaia Alias: Gaia23dql Discovery magnitude 11.62 (G-Gaia Filter)  vs Historic Magnitude 11.97 +/- 0.07 SD Bright Gaia source brightens by 0.4 mag, previous events seen  ( TNS 2023aaky | Gaia23dql )

AT 2023aaky - 2023-12-19 (T+4.7d) Image below (2023-12-19.824) was taken 4.7 days after discovery of 2023aaky Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +11.80 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-19 19:49 UT (#1176027-31) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023aaky on Transients 2023 Page >>

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CGCG 182-071 - Galaxy (PGC 29248) with Type Ia Supernova 2023emd

CGCG 182-071 with SN 2023emd (Leo Minor) SN 2023emd (Type: Ia) discovered 2023-04-02.259 UT by ZTF Alias: ZTF23aaeeawl, Gaia23bkm Discovery Magnitude 18.32 (r-ZTF filter) SN in galaxy MCG+06-22-068 Gaia, 2023-04-05 03:17:30, Mag +17.60  ( TNS 2023emd | Gaia23bkm )

CGCG 182-071 - Galaxy  CGCG 182-071 (alias: MCG+06-22-068 / PGC 29248, catalog mag +14.9)

Annotated CCD Image (60% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-20 05:18 UT (#1176065-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

CGCG 182-071 with SN 2023emd - 2023-12-20 (T+262.0d) Image below (2023-12-20.216) was taken 262.0 days after discovery of 2023emd Position of earlier SN (no longer visible) is indicated by white cross-hairs.

Annotated CCD Image (175% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-20 05:18 UT (#1176065-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023emd (in CGCG 182-071) on Supernova 2023 Page >>

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M33 - Spiral Galaxy with EGN Type Transient AT 2023ypg

M33 with Nova M33 AT 2023ypg (Triangulum) AT 2023ypg (Type: EGN) discovered 2023-11-29.609 UT by XOSS Alias: PSP23O, PNV J01325400+3021387, Gaia23dnw Discovery Magnitude 18.2 (Clear filter) Confirmed Nova Gaia, 2023-12-06 23:55, Mag +18.59 Gaia, 2023-12-07 07:42 , Mag +18.71 Gaia, 2023-12-12 05:59 , Mag +18.42 Gaia, 2024-01-20 18:52, Mag +19.50  ( TNS 2023ypg | Gaia23dnw )

M33 with Nova AT 2023ypg Image taking with secondary scope showing position of reported EGN (blue circle) relative to M33 Galaxy centre (labelled) and outline of M33 (white ellipse)

CMOS Image (16% size) 10s exposure (stacked), 1x1 binning 2023-12-19  19:21 UT (#Cam2_Ref) TS 80mm APO, ZWO ASI178MC & PHD2

M33 with Nova AT 2023ypg (T+20.2d)

Annotated CCD Image (50% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-19 19:33 UT (#1176021-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M33 with Nova AT 2023ypg - 2023-12-19 (T+20.2d) Image below (2023-12-19.809) was taken 20.2 days after discovery of 2023ypg Position of reported Transient (faint) is indicated by white cross-hairs. Measured Magnitude +18.57 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-12-19 19:33 UT (#1176021-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023ypg (in M33) on Transients 2023 Page >>

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M98 - Spiral Galaxy

M98 (Coma Berenices) [ Messier Objects ] Poor quality image (single frame only)

Annotated CCD Image (70% size, square root scale) 180s exposure (single frame), 3x3 binning, Clear Filter 2023-12-20 05:40 UT (#1176081) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M98 - Earlier Image (Dec 2022)

Annotated CCD Image (70% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2022-12-20 04:54 UT (#1073112-16) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M98 - Earlier Image (Mar 2007)

CCD Image 7 x 180s exposure (average combine), 2x2 binning, C filter 2007-03-13  00:25h UT (#182297-303) 8" LX200 Classic + ST-7E

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NGC 5853 - Spiral Galaxy

NGC 5853 (Bootes) Poor quality image (single frame only)

Annotated CCD Image 50% size, square root scale) 180s exposure (single frame), 3x3 binning, Clear Filter 2023-12-20 06:15 UT (#1176086) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 5853 - Detail

Annotated CCD Image (125% size, square root scale, copped) Image details as above

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NGC 6745 - Spiral Galaxy with Type II Supernova 2023ucy

NGC 6745 with SN 2023ucy (Lyra) SN 2023ucy (Type: II) discovered 2023-10-05.151 UT by ZTF Alias: ZTF23abhzxwm Discovery Mag +17.9 (r-ZTF filter) vs last non-detection image with 19.91 limiting mag It is noted that SN 2022prr (19:01:41.897, +40:45:03.67) occurred in Jul 2022 at approximately the same location as this newly reported transient 2023ucy (19:01:41.992, +40:45:05.89) (are they possibly related ?)  ( TNS 2023ucy ) ( TNS 2022prr )

NGC 6745 with SN 2023ucy - 2023-12-20 (T+76.1d) Image below (2023-12-20.276) was taken 76.1 days after discovery of 2023ucy Position of SN (faint) is shown by white cross-hairs Measured magnitude +14.79 Poor quality image (single frame only)

Annotated CCD Image (150% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2023-12-20 06:38 UT (#1176090) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023ucy (NGC 6745) on Supernovae 2023 Page >>

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UGC 530 - Spiral Galaxy with Type Ia Supernova 2023yma

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UGC 5764 - Irregular Galaxy (ARP 267)

UGC 5764 (Leo Minor) Alias: ARP 267 [ ARP Galaxies ]   [ Irregular Galaxies ]

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2022-03-25 21:54 UT (#995041-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 5764 - Detail

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

UGC 5764 - Earlier Detail

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2022-03-25 21:54 UT (#995041-45) 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

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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 - 2023-12-20 (T+48.7d) Image below (2023-12-20.146) was taken 48.7 days after discovery of 2023wcw Position of reported supernova (faint) is shown by white cross-hairs Estimated Mag 17.1 (Clear filter) Poor quality image (single frame)

Annotated CCD Image (150% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2023-12-20 03:30 UT (#1176057) 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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