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Images - Session 1159 (2023-10-31)
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12P/Pons-Brooks - Comet C/2023 H2 (Lemmon) - Comet AT 2022obq - CV Type Transient AT 2023tdi - Type BL Transient (QSO B1028+511) AT 2023txn - CV Type Transient M31 - Spiral Galaxy with Type EGN Transient AT 2023veq M101 - Spiral Galaxy with Type IIL Supernova 2023ixf NGC 3893 - Spiral Galaxy with LRN Type Transient AT 2023uhx SN 2023sfl - Type Ia-91T Supernova in WISEA Galaxy Variable Stars (photometric monitoring) - None Nearby Stars (astrometric monitoring) - None
- Attempted Late Evening and Early morning session (5.1 hrs), badly affected by passing cloud and occasional rain showers - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 4°C (min) - CCD Temperature: -20° C - Notes from 2023-10-31 >> -
| 12P/Pons-Brooks - 2023-10-22 (passing through Hercules) Sun Distance 2.75 AU (approaching) Earth Distance 2.88 AU (431.2 million km) Poor quality image |
12P/Pons-Brooks - 2023-10-22 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 41.33 arcsec/hr, Dec -20.80 arcsec/hr) Poor quality image |
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| Annotated CCD Image (50% size, square root scale) 3 x 90s exposure (average combine), 3x3 binning, Clear Filter 2023-11-01 00:41 UT (#1159022-24) 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 |
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| Images of 12P/Pons-Brooks on Comets 2023 Page >> |
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| C/2023 H2 (Lemmon) - 2023-11-01 (passing through Ursa Major)) Sun Distance 0.90 AU (approaching/ turning ?) Earth Distance 0.41 AU (61.0 million km) |
C/2023 H2 (Lemmon) - 2023-11-01 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 564.76 arcsec/hr, Dec -15.62 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 2 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-11-01 01:24 UT (#1159044-45) 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) 14 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-11-01 01:30 UT (#1159044-57) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of C/2023 H2 (Lemmon) on Comets 2023 Page >> |
| C/2023 H2 (Lemmon) - False Colour, 2023-11-01 |
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| False Colour CCD Image (70% size, square root scale) Inverse Spectrum 14 x 45s exposure (average combine), 3x3 binning, Clear Filter 2023-11-01 01:30 UT (#1159044-57) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| 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) Outburst in known CV - LX And ( TNS 2022obq | Gaia22cti ) |
| AT 2022obq - 2023-11-01 (T+488.0d) Image below (2023-11-01.151) was taken 488.0 days after discovery of 2022obq Position of transient (fading) is shown by white cross-hairs Measured Magnitude + 14.84 |
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| Annotated CCD Image (100% size, linear scale, cropped) 60s exposure (single frame), 3x3 binning, Clear Filter 2023-11-01 03:38 UT (#1159077) 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 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 - 2023-11-01 (T+46.6d) Image below (2023-11-01.006) was taken 46.6 days after discovery of 2023tdi Position of reported transient (faint, stable) is shown by white cross-hairs Measured Magnitude +15.61 (Clear Filter) |
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| Annotated CCD Image (100% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2023-11-01 00:08 UT (#1159011) 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 2023txn (Cygnus) AT 2023txn (Type: CV) discovered 2023-09-29.797 UT by Gaia Alias: Gaia23cse Discovery magnitude 11.83 (G-Gaia) vs Historic Mag 13.14 Red Galactic plane source brightens erratically by 2 mag & becomes bluer ( TNS 2023txn | Gaia23cse ) |
| AT 2023txn - 2023-11-01 (T+32.2d) Image below (2023-11-01.035) was taken 32.2 days after discovery of 2023txn Position of reported transient (distinct, stable ?) is shown by white cross-hairs Measured magntitude +12.24 (Clear Filter) |
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| Annotated CCD Image (100% size, linear scale, cropped) 60s exposure (single frame), 3x3 binning, Clear Filter 2023-11-01 00:51 UT (#1159030) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2023txn on Transients 2023 Page >> |
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| Nova M31 AT 2023veq (Andromeda) AT 2023veq (Type: EGN) discovered 2023-10-16.987 UT by Robert Fidrich Alias: Vend55, PNV J00433237+4138211, MASTER OT J004332.34+413821.4 Discovery Mag 18.6 (Clear Filter) ( TNS 2023veq ) |
| Nova M31 AT 2023veq Cam2 Reference Image, Position of AT 2023veq (not visible in this exposure) is shown by blue circle Limits of M31 Spiral Galaxy is shown by white ellipse |
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| Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2023-11-01 00:14 LT TS 80mm APO, ZWO ASI178MC |
| Nova M31 AT 2023veq - 2023-11-01 (T+15.0d) Image below (2023-11-01.014) was taken 15.0 days after discovery of 2023veq Position of reported transient (faint) is shown by white cross-hairs Measured Magnitude ? (Unable to isolate in SExtractor) |
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| Annotated CCD Image (100% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2023-11-01 00:20 UT (#1159015) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2023veq (in M31) on Transients 2023 Page >> |
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| 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 ) SN 2023ixf (Type: IIL) discovered 2023-05-19.727 UT by Koichi Itagaki at Mag 14.9 is located near M101's prominant star-forming region NGC 5461. The supernova resulted from a exploding red supergiant and lies just 21 million light years away. It's the closest core-collapse supernova to us since SN 1993J which lit up M81 (some 12 million ly away) in Spring 1993. The SN is designated of type II-L (L for 'linear') , which is characterised by a rapid rise to maximum brightness followed by a slow and gradual decrease, that is thought to be brought about by ejection of the dead stars' outer hydrogen shell. (from Article "Summer's Super Supernova", AstNow Magazine, Sep 2023, pp 36-39) |
| M101 with SN 2023ixf - 2023-11-01 (T+165.3d) Image below (2023-11-01.069) was taken 165.3 days after discovery of 2023ixf Position of supernova (distinct) is shown by white cross-hairs Measured Magnitude +13.99 (Clear Filter) |
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| Annotated CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-11-01 01:43 UT (#1159061-62) 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 3893 with AT 2023uhx (Ursa Major) AT 2023uhx (Type: LRN) discovered 2023-10-07.816 UT by Koichi Itagaki Discovery magnitude 17.2 (Clear filter) vs DSS Archival Image Luminous Red Nova based on its peak luminosity, and narrow Balmer and Fe II emission lines. ( TNS 2023uhx) |
| NGC 3893 with AT 2023uhx - 2023-11-01 (T+24.2d) Image below (2023-11-01.044) was taken 24.2 days after discovery of 2023uhx Position of reported transient (faint but still distinct) is shown by white cross-hairs Measured magnitude ? (unable to extract in SExtractor |
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| Annotated CCD Image (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-11-01 01:09 UT (#1159036-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2023uhx (NGC 3893) on Transients 2023 Page >> |
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| SN 2023sfl (Pisces) Alias: In SDSS J012038.93+321416.15 SN 2023sfl (Type: Ia-91T) discovered 2023-09-13.450 UT by ZTF Alias: ZTF23abcvqkd Discoverer Mag 14.9 (Clear filter) Appears to be associated with WISEA J012038.92+321415.2 ( Rochester Supernova site | TNS 2023sf ) |
| SN 2023sfl - 2023-11-01 (T+48.7d) Image below (2023-11-01.136) was taken 48.7 days after discovery of 2023sfl Position of supernova (faint but distinct) is shown by white cross-hairs Measured Magnitude +17.40 (Clear Filter) |
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| Annotated CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-11-01 03:21 UT (#1159068-70) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2023sfl (in WISEA Galaxy) on Supernova 2023 Page |
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| This Web Page: | Images - Session 1159 (2023-10-31) |
| Last Updated : | 2024-06-15 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
