David's Astronomy Pages Images - Session 1153 (2023-10-03)

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Session Notes

237P/LINEAR - Comet     AT 2022wic - Transient (Attempt)     M31 2023-10a? - Extragalactic Nova in M31 M31 AT 2023trk - Extragalactic Nova in M31 M33 - Spiral Galaxy with Transient AT 2023nou     NGC 2326 - Spiral Galaxy with Type II Supernova 2023pgb     - C/2023 E1 (ATLAS) attempt failed (due to cloud)     Variable Stars (photometric monitoring) - None      Nearby Stars (astrometric monitoring) - None     - Groombridge 34 attempt failed (due to cloud/too few stars) -

- Attempted all-night session (3.3 hrs) impacted by and finally cut short by development of cloud     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 9°C (min) - CCD Temperature:   -15° C - Notes from 2023-10-03 >>     -

237P/LINEAR - Comet

237P/LINEAR - 2023-10-03 (passing through Aquila) Sun Distance 2.28 AU (receeding) Earth Distance 1.75 AU (262.1 million km) Expected position of comet (not visible) is shown by white circle		237P/LINEAR) - 2023-10-03 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 38.98 arcsec/hr, Dec -7.04 arcsec/hr) Expected position of comet (not visible) is shown by white circle
Annotated CCD Image (50% size, square root scale) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-10-03 23:16 UT (#1153067-68) 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 237P/LINEAR on Comets 2023 Page >>

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AT 2022wic - Transient (attempt)

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Nova M31 2023-10a? - Extragalactic Nova in M31

Nova M31 2023-10a? (Andromeda) Nova M31 2023-10a? (Type: unk) discovered 2023-10-01.757 UT by Gianluca Masi Alias: PNV J00402967+4051414 Located 1522".9 west and 1467".1 south of the center of M31 Discovery Mag 17.9 The new source is not visible on Panstarrs DR1 and not visible of SDSS9, as available via Aladin. This new source is not visible on images taken on 2023-09-24 with the same setup.  ( Rochester, Extragalactic Novae - 2023 )

Nova M31 AT 2023trk Cam2 Reference Image, Position of Nova M31 2023-10a? (not visible in this exposure) is shown by blue circle Limits of M31 Spiral Galaxy is shown by white ellipse Image also captures the elliptical galaxy M32 (NCC 221) on left hand side

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2022-10-03 20:39 UT (21:39 LT) TS 80mm APO, ZWO ASI178MC

Nova M31 2023-10a? - 2023-10-03 (T+2.1d) Image below (2023-10-03.863) was taken 2.1 days after discovery of Nova M31 2023-10a? Position of reported nova (faint but distinct) is shown by white cross-hairs Measured Magnitude +17.64 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-10-03 20:51 UT (#1153013-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova M31 2023-10a? (in M31) on Transients 2023 Page >>

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Nova AT 2023trk - Extragalactic Nova in M31

Nova AT 2023trk in M31 (Andromeda) AT 2023trk (Type: EGN) discovered 2023-09-26.461 UT by ATLAS Alias: ATLAS23tfn, PNV J00441143+4120239 Discovery Mag 17.38 (orange-ATLAS filter)  ( TNS 2023trk )

Nova M31 AT 2023trk - 2023-10-03 (T+7.5d) Image below (2023-10-03.922) was taken 7.5 days after discovery of 2023trk Position of reported transient (very faint) is shown by white cross-hairs Measured Magnitude ? Poor quality image (single frame due to developing cloud)

Annotated CCD Image (100% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2023-10-03 22:08 UT (#1153052) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova AT 2023trk (in M31) on Transients 2023 Page >>

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M33 - Spiral Galaxy with Transient AT 2023nou

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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 - 2023-10-03 (T+52.4d) Image below (2023-10-03.849) was taken 52.4 days after discovery of 2023pgb Position of reported SN (very faint) is indicated by white cross-hairs. Measured Magnitude ? (unable to extract) Poor quality image (bright moonlit sky background)

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-10-03 20:30 UT (#1153007-10) 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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