David's Astronomy Pages Images - Session 1139 (2023-09-04)

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Session Notes

C/2019 T4 (ATLAS) - Comet C/2020 R7 (ATLAS) - Comet C/2022 L2 (ATLAS) - Comet C/2023 E1 (ATLAS) - Comet     Nova Per 2020 - Nova (V1112 Per) AT 2022obq - CV Type Transient AT 2022szi - Transient (Attempt) AT 2022whd - CV Type Transient AT 2023dnz - Type ulens? Transient AT 2023qoo - Afterglow Type Transient (from GRB 230818A) (Attempt) AT 2023rfq - Type YSO? Transient     LCSB S2416O - Galaxy with Type Ia Supernova 2023mtc M31 - Spiral Galaxy with Transient AT 2022acwk     NGC 1461 - Spiral Galaxy with Unconfirmed Transient AT 2023och (Unconfirmed) NGC 2326 - Spiral Galaxy with Type II Supernova 2023pgb NGC 7495 - Spiral Galaxy with Type II Supernova 2022ubb     UGC 9350 - Spiral Galaxy with Type Ib Supernova 2023nny     Variable Stars (photometric monitoring) - RX And, SS Cyg, BL Lac, X Tri      Nearby Stars (astrometric monitoring) -  HH And, Groombridge 34, Ev Lac

- Attempted all-night session (7.0 hours)     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 9°C (min) - CCD Temperature:  -10°/-15° C - Notes from 2023-09-04 >>     -

C/2019 T4 (ATLAS) - Comet

C/2019 T4 (ATLAS) - 2023-09-04 (passing through Serpens) Sun Distance 5.61 AU (receeding) Earth Distance 5.91 AU (884.6 million km)		C/2019 T4 (ATLAS) - 2023-09-04 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 20.79 arcsec/hr, Dec -9.26 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 21:18 UT (#1139014-16) 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) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 21:20 UT (#1139014-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2019 T4 (ATLAS) on Comets 2023 Page >>

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C/2020 R7 (ATLAS) - Comet

C/2020 R7 (ATLAS) - 2023-09-04  (passing through Corona Borealis) Sun Distance 4.49 AU (receeding) Earth Distance 4.80 AU (718.3 million km)		C/2020 R7 (ATLAS) - 2023-09-04 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 4.30 arcsec/hr, Dec -9.22 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 21:37 UT (#1139022-28) 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) Image details as left
Images of C/2020 R7 (ATLAS) on Comets 2023 Page >>

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C/2022 L2 (ATLAS) - Comet

C/2022 L2 (ATLAS) - 2023-09-04 (passing through Virgo) Sun Distance 3.32 AU (approaching) Earth Distance 3.64 AU (544.4 million km)		C/2022 L2 (ATLAS) - 2023-09-04 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -11.06 arcsec/hr, Dec -34.54 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 21:05 UT (#1139005-07) 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) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 21:07 UT (#1139005-11) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2022 L2 (ATLAS) on Comets 2023 Page >>

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C/2023 E1 (ATLAS) - Comet

C/2023 E1 (ATLAS) - 2023-09-04 (passing through Aquarius) Sun Distance 1.47 AU (receeding) Earth Distance 0.47 AU (70.2 million km)		C/2023 E1 (ATLAS) 2023-09-04, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 31.43 arcsec/hr, Dec -224.12 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 2 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 23:58 UT (#1139086-87) 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) 15 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-09-05 00:04 UT (#1139086-100) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2023 E1 (ATLAS) on Comets 2023 Page >>

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Nova Per 2020 - Nova (V1112 Per, AT 2020abap)

Nova Per 2020 (Perseus) Nova in Perseus discovered 2020/11/25.807 [ Novae ] Nova Per 2020 discovered independently by Seiji Ueda and Stanislav Korotkiy et al AT 2020abap (Type: CV) reported 2020/11/27.230 UT by PGIR Alias: N Per 2020 , PGIR20fbf, TCP J04291888+4354233, TCP J04291884+4354232, V1112 Per

Nova Per 2020 - 2023-09-05 (T+1013.3d) Image below (2023-09-05.115) was taken 1013.3 days after discovery of nova Nova (fading) is shown by white cross hairs.  Measured magnitude +17.74

Annotated CCD Image (100% size, linear scale, cropped) 5 x 120s exposure (average combine), 3x3 binning, Clear Filter 2023-09-05 02:51 UT (#1139170-74) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova Per 2020 on Novae Page >>

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AT 2022obq - CV Type Transient

AT 2022obq (Andromeda) AT 2022obq (Type: CV) discovered 2022-07-01.104 UT by Gaia Alias: Gaia22cti Alerting magnitude 13.15 (vs Historic magnitude 15.23)  ( TNS 2022obq | Gaia22cti )

AT 2022obq - 2023-09-05 (T+431.0d) Image below (2023-09-05.089) was taken 431.0 days after discovery of 2022obq Position of transient (fading) is shown by white cross-hairs Measured Magnitude + 16.15

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-05 02:11 UT (#1139145-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022obq on Transients 2022 Page >>

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AT 2022szi - Transient (Attempt)

AT 2022szi (Andromeda) AT 2022szi (Type: unk) discovered 2022-08-30.322 UT by ZTF Alias: ZTF22abdsaqa Discovery Magnitude 15.94 (r-ZTF Filter)  ( TNS 2022szi )

AT 2022szi - 2023-09-05 (T+370.7d) Image below (2023-09-05.026) was taken 370.7 days after discovery of 2022szi Position of earlier reported transient (no longer visible) is shown by white circle

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-05 00:46 UT (#1139109-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022szi on Transients 2022 Page >>

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AT 2022whd - CV Type Transient

AT 2022whd (Cassiopeia) AT 2022whd (Type: CV) discovered 2022-09-28.034 UT by Gaia Alias: Gaia22eba  ( TNS 2022whd , Gaia22eba )

AT 2022whd - 2023-09-05 (T+342.0d) Image below (2023-09-05.074) was taken 342.0 days after discovery of 2022whd Position of reported transient (bright) is shown by white cross-hairs Measured magnitude +12.75 (aperture 8)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-05 01:49 UT (#1139131-35) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022whd on Transients 2022 Page >>

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AT 2023dnz - Type ulens? Transient

AT 2023dnz (Cassiopeia) AT 2023dnz (Type: ulens?) discovered 2023-03-11.909 UT by Gaia Alias: Gaia23bcr Discovery Mag 13.21 (G-Gaia Filter) vs Historic Mag 13.44 Bright gal.plane source candidate microlensing event or Be-type outburst rises by 0.2 mag  ( TNS 2023sqw | Gaia23bcr )

AT 2023dnz - 2023-09-05 (T+177.1d) Image below (2023-09-05.058) was taken 177.1 days after discovery of 2023dnz Position of reported transient (likely faded again) is shown by white cross-hairs Note: Unable to separate AT 2023dnz  and adjacent star

Annotated CCD Image (175% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-05 01:32 UT (#1139124-28) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023dnz on Transients 2023 Page >>

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AT 2023qoo - Afterglow Type Transient (from GRB 230818A)  (attempted observation)

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AT 2023rfq - Type YSO? Transient

AT 2023rfq (Cygnus) AT 2023rfq (Type: YSO?) discovered 2023-08-24.114 UT by Gaia Alias: Gaia23cbk Discovery Mag 13.19 (G-Gaia Filter)  (vs Historic Mag 13.49) Brightening in candidate YSO  ( TNS 2023rfq | Gaia23cbk )

AT 2023rfq - 2023-09-04 (T+11.9d) Image below (2023-09-04.977) was taken 11.9 days after discovery of 2023rfq Position of reported transient (distinct) is shown by white cross-hairs Measured magnitude ? (unable to insert WCS)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 23:35 UT (#1139075-79) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023rfq on Transients 2023 Page >>

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LCSB S2416O - Galaxy with Type Ia Supernova 2023mtc

LCSB S2416O with SN 2023mtc (Lyra) SN 2023mtc (Type: Ia, z=0.01) discovered 2023-07-09.374 UT by ZTF Alias: ZTF18aawlfnj Discovery Magnitude 17.44 ( r-ZTF)  ( TNS 2023pgb )

LCSB S2416O - Galaxy Low Surface Brightness Galaxy Alias: 2MASX J18571374+3011219

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 22:04 UT (#1139047-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

LCSB S2416O with SN 2023mtc - 2023-09-04 (T+57.5d) Image below (2023-09-04.913) was taken 57.5 days after discovery of 2023mtc Position of reported SN (not separately distinguishable) is shown by white cross-hairs

Annotated CCD Image (175% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 22:04 UT (#1139047-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023mtc (in LCSB S2416O) on Supernova 2023 Page >>

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M31 - Spiral Galaxy with Transient AT 2022acwk

M31 with AT 2022acwk (Andromeda) AT 2022acwk (Type: unk) discovered 2022-12-13.332 UT by ATLAS Alias: ATLAS22bnqb, Gaia23afx Discovery Mag 16.38 (orange-ATLAS filter) Apparently hostless Gaia transient, possibly strong emission lines Gaia Mag 18.86 (2023-01-11) Gaia Mag 20.38 (2023-03-04)  ( TNS 2022acwk | Gaia23afx )

M31 with AT 2022acwk Image taking with secondary scope showing position of reported transient (blue circle) relative to outline of M31 galaxy (white ellipse). Transient has a very large offset from M31 Galaxy centre (outside of FOV) and may not be associated with M31.

CMOS Image (16% size) 10s exposure (stacked), 1x1 binning 2023-09-05 01:57 UT (#Cam2_Ref) TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2022acwk (T+265.7d) Position of reported transient is shown by white circle

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-05 01:09 UT (#1139116-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2022acwk - 2023-09-05 (T+265.7d) Image below (2023-09-05.042) was taken 265.7 days after discovery of 2022acwk Position of reported transient (apparently faded & no longer visible) is shown by white circle Star object lying within circle (but offset from centre) is probably not the source object

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-05 01:09 UT (#1139116-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 1461 - Spiral Galaxy with Unconfirmed Transient AT 2023och (Unconfirmed)

NGC 1461 with AT 2023och (Eridanus) AT 2023och (Type: unconf) discovered 2023-07-26.789 UT by Seiichiro Naito Discovery Magnitude 18.21 (g-ZTF Filter)  ( TNS 2023och )

NGC 1461 with AT 2023och - 2023-09-05 (T+40.4d) Image below (2023-09-05.148) was taken 40.4 days after discovery of 2023och Position of reported transient (not visible) is indicated by white cross-hairs.

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-05 03:42 UT (#1139213-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of  AT 2023och (in NGC 1461) on Transients 2023 Page >>

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NGC 2326 - Spiral Galaxy with Type II Supernova 2023pgb

NGC 2326 with SN 2023pgb (Lynx) SN 2023pgb (Type: II) discovered 2023-08-12.496 UT by ZTF Alias: ZTF23aaxdfya Discovery Magnitude 17.44 ( r-ZTF)  ( TNS 2023pgb )

NGC 2326 with SN 2023pgb - 2023-09-04 (T+23.4d) Image below (2023-09-04.945) was taken 23.4 days after discovery of 2023pgb Position of reported SN (faint) is indicated by white cross-hairs. Measured Magnitude +18.08 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 22:50 UT (#1139061-65) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023pgb (in NGC 2326) on Supernova 2023 Page >>

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NGC 7495 - Spiral Galaxy with Type II Supernova 2022ubb

NGC 7495 with SN 2022ubb (Pegasus) SN 2022ubb (Type: II, z=0.01628) discovered 2022-09-13.498 UT by ATLAS Alias: ATLAS22bekt Discovery Magnitude +18.125 ABMag  ( TNS 2022ubb )

NGC 7495 with SN 2022ubb - 2023-09-05 (T+356.5d) Image below (2023-09-05.013) was taken 356.5 days after discovery of 2022ubb Position of earlier SN (faded & no longer visible) shown by white cross-hairs

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-05 00:26 UT (#1139104-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 7495 with SN 2022ubb - Earlier Image 2022-09-18 (T+5.5d) Image below (2022-09-18.975) was taken 5.5 days after discovery of 2022ubb Position of SN (faint) shown by white cross-hairs Measured magnitude ? (unable to isolate in SExtractor)

Annotated CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2022-09-18 23:35 UT (#1039146-47) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2022ubb (NGC 7495) on Supernova 2022 Page >>

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UGC 9350 - Spiral Galaxy with Type Ib Supernova 2023nny

UGC 9350 with SN 2023nny (Bootes) SN 2023nny (Type: Ib) discovered 2023-07-20.221 UT by ALeRCE Alias: ZTF23aaszwst Discovery Magnitude 17.72 ( g-ZTF Filter) vs Last Non Detection 20.49 limiting mag  ( TNS 2023nny )

UGC 9350 with SN 2023nny - 2023-09-04 (T+46.7d) Image below (2023-09-04.961) was taken 46.7 days after discovery of 2023nny Position of reported SN (not separatably distinguishable) is indicated by white cross-hairs. Measured Magnitude +15.07 (nucleus + SN)

Annotated CCD Image (175% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-04 23:12 UT (#1139068-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023nny (in UGC 9350) on Supernova 2023 Page >>

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