David's Astronomy Pages Images - Session 1128 (2023-08-13)

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Images (S1129)

Objects	Session Notes
C/2019 T4 (ATLAS) - Comet C/2023 E1 (ATLAS) - Comet     M101 - Spiral Galaxy with Type IIL Supernova 2023ixf NGC 5297 - Spiral Galaxy with Transient AT 2023mlt (Unconfirmed)     UGC 9350 - Spiral Galaxy with Type Ib Supernova 2023nny     -  xx attempt failed (due to cloud)     Variable Stars (photometric monitoring) - None      Nearby Stars (astrometric monitoring) -  None   -	- Attempted all night session (2.2 hrs),  ended early due to cloud.     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 13°C (min) - CCD Temperature:  -10° / -15° C - Notes from 2023-08-13 >>     -

C/2019 T4 (ATLAS) - Comet

C/2019 T4 (ATLAS) - 2023-08-14 (passing through Serpens) Sun Distance 5.50 AU (receeding) Earth Distance 5.55 AU (830.5 million km)		C/2019 T4 (ATLAS) - 2023-08-14 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 10.72 arcsec/hr, Dec -8.61 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-08-14 00:14 UT (#1128054-57) 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) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-08-14 00:14 UT (#1128054-57) 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/2023 E1 (ATLAS) - Comet

C/2023 E1 (ATLAS) - 2023-08-13 (passing through Cygnus) Sun Distance 1.25 AU (receeding) Earth Distance 0.38 AU (56.7 million km)		C/2023 E1 (ATLAS) 2023-08-13, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 78.55 arcsec/hr, Dec -297.30 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 45s exposure (single frame), 3x3 binning, Clear Filter 2023-08-13 23:52 UT (#1128036) 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) 13 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-08-13 23:59 UT (#1128036-49) 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 >>

C/2023 E1 (ATLAS) - 2023-08-13 showing motion over a 13 minute period Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 78.55 arcsec/hr, Dec -297.30 arcsec/hr)

Annotated CCD Image (70% size, square root scale) 13 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-08-13 23:59 UT (#1128036-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Frames aligned on stars in CCDSoft and then Stacked using Sigma Beta 10's Maximum function

Annotated CCD Image (70% size, square root scale) Images details as above

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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 )

M101 - Spiral Galaxy

Annotated CCD Image (70% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-08-13 23:00 UT (#1128015-19) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M101 - Detail

Negative CCD Image (70% size, log scale) Image details as above

False Colour CCD Image (70% size, square root scale) Inverse Spectrum, Softened (noise reduction) Image details as above

M101 with SN 2023ixf - 2023-08-13 (T+86.2d) Image below (2023-08-13.952) was taken 86.2 days after discovery of 2023ixf Position of supernova (still distinct but fading) is shown by white cross-hairs Measured Magnitude +12.99

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-08-13 23:00 UT (#1128015-19) 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 5297 - Spiral Galaxy with Transient AT 2023mlt (Unconfirmed)

NGC 5297 with AT 2023mlt (Canes Venatici) AT 2023mlt (Type: unconf) discovered 2023-07-06.821 UT by Mohammad Odeh Discovery Magnitude 11.8 ( I-Cousins Filter) vs Last Non Detection 16.5 limiting mag TNS note "This is not a real object. Please ignore"  ( TNS 2023mlt | Gaia23bay)

NGC 5297 with AT 2023mlt - 2023-08-13 (T+38.1d) Image below (2023-08-13.938) was taken 38.1 days after discovery of 2023mlt Position of reported transient (not visible ?) is indicated by white cross-hairs. This is adjacent to mag 9.5 star SAO 44745 (GSC 3032:258) TNS Report for AT 2023mlt shows  "This is not a real object. Please ignore"

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-08-13 22:40 UT (#1128007-11) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023mlt (in NGC 5297) on Transients 2023 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 - 2023-08-13 (T+24.7d) Image below (2023-08-13.968) was taken 24.7 days after discovery of 2023nny Position of reported transient (not distinguishable) is indicated by white cross-hairs. Measured Magnitude +14.98 (nucleus + SN)

Annotated CCD Image (175% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-08-13 23:22 UT (#1128023-27) 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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