David's Astronomy Pages Images - Session 1186 (2024-02-16)

Images (S1185)

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Images (S1186)

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Session Notes

12P/Pons-Brooks - Comet 13P/Olbers - Comet 207P/NEAT - Comet C/2022 E2 (ATLAS) - Comet     AT 2023elx - CV Type Transient (in NGC 2345) AT 2023rrr - Type QSO Transient (QSO J0136+4751) AT 2023xvv - CV Type Transient AT 2023xzr - Type YSO Transient AT 2024vf - CV Type Transient     IC 564 - Spiral Galaxy with Type Ia Supernova 2023abqf     NGC 2345 - Open Cluster NGC 4216 - Spiral Galaxy with Type Ia Supernova 2024gy NGC 7735 - Elliptical Galaxy with Type Ia Supernova 2024we     UGC 4269 - Spiral Galaxy with Type Ia-91T Supernova 2023dxb     Variable Stars (photometric monitoring) - BL Lac      Nearby Stars (astrometric monitoring) - None

- Attempted All Night Session (10.9 hrs) interrupted by cloud in second half of night     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 1.0°C (min) , climbing later to 8°C - CCD Temperature:   -20° /-25°C - Notes from 2024-02-16 >>     -

Observing Result

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12P/Pons-Brooks - Comet (Outburst)

12P/Pons-Brooks - 2024-02-17 (passing through Lacerta) Sun Distance 1.38 AU (approaching) Earth Distance 1.77 AU (265.3 million km)		12P/Pons-Brooks -  2024-02-17 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 179.92 arcsec/hr, Dec -13.52 arcsec/hr)
Annotated CCD Image (50% size, log scale) 90s exposure (single frame), 3x3 binning, Clear Filter 2024-02-17 05:33 UT (#1186135) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, log root scale, cropped) Image details as left
12P/Pons-Brooks - 2024-02-17 Detail		12P/Pons-Brooks - 2024-02-17 Detail
Annotated false-colour CCD Image (50% size, log scale) 90s exposure (single frame), 3x3 binning, Clear Filter 2024-02-17 05:33 UT (#1186135) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated false-colour CCD Image (100% size, log scale, cropped) Inverse Spectrum Image details as left
Images of 12P/Pons-Brooks on Comets 2023 Page >>
Images of 12P/Pons-Brooks on Comets 2024 Page >>

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13P/Olbers - Comet

13P/Olbers - 2024-02-16 (passing through Cetus) Sun Distance 2.23 AU (approaching) Earth Distance 2.27 AU (339.6 million km)		13P/Olbers - 2024-02-16 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 18.41 arcsec/hr, Dec 52.43 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 19:03 UT (#1186006-08) 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) 10 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 19:07 UT (#1186006-15) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 13P/Olbers on Comets 2024 Page >>

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207P/NEAT - Comet

207P/NEAT - 2024-02-16 (passing through Eridanus) Sun Distance 0.97 AU (receeding) Earth Distance 0.27 AU (41.1 million km)		207P/NEAT - 2024-02-16 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 267.54 arcsec/hr, Dec 3.44 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 19:18 UT (#1186018-19) 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 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 19:25 UT (#1186018-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 207P/NEAT on Comets 2024 Page >>

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C/2022 E2 (ATLAS) - Comet

C/2022 E2 (ATLAS) - 2024-02-16 (passing through Gemini) Sun Distance 4.12 AU (approaching) Earth Distance 3.24 AU (485.0 million km)		C/2022 E2 (ATLAS) - 2024-02-16 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -63.39 arcsec/hr, Dec 30.80 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 60s exposure (single frame), 3x3 binning, Clear Filter 2024-02-16 22:36 UT (#1186107) 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 2024-02-16 22:34 UT (#1186101-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2022 E2 (ATLAS) on Comets 2023 Page >>
Images of C/2022 E2 (ATLAS) on Comets 2024 Page >>

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AT 2023elx - CV Type Transient (in NGC 2345)

AT 2023elx (Canis Major) AT 2023elx (Type: CV) discovered 2023-03-30.837 UT by Gaia Alias: Gaia23bir Discovery Magnitude 13.26 (G-Gaia Filter) vs Historic Mag 13.65 +/- 0.08 SD ~0.3 mag rise in Be star Gaia, 2022-03-15 19:07, mag 13.65 Gaia, 2022-10-07 22:28, mag 13.56 Gaia, 2022-11-07 04:11, mag 13.32 Gaia, 2023-03-04 20:14, mag 13.26 Gaia, 2023-11-18 05:22, mag 13.28  ( TNS 2023elx | Gaia23bir )

AT 2023elx - 2024-02-16 (T+323.0d) Image below (2024-02-16.837) was taken 323.0 days after discovery of 2023elx Position of reported transient (distinct) is shown by white cross-hairs Measured Mag +13.43 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 20:08 UT (#1186043-47) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023elx on Transients 2023 Page >>

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AT 2023rrr - Type QSO Transient (QSO J0136+4751)

AT 2023rrr (Andromeda) AT 2023rrr (Type: QSO) discovered 2023-09-02.139 UT by Gaia Alias: Gaia23cfc Discovery Magnitude 16.04 (G-Gaia Filter) vs Historic Mag 18.43 +/- 0.778 SD Brightening in known QSO  (QSO J0136+4751) Gaia, 2022-02-24 22:20, mag 18.78 Gaia, 2023-08-08 21:24, mag 17.19 Gaia, 2023-09-02 03:20, mag 16.04 Gaia, 2023-12-08 08:00, mag 17.15 Gaia, 2023-12-16 06:19, mag 17.80  ( TNS 2023rrr | Gaia23cfc )

AT 2023rrr - 2024-02-16 (T+167.7d) Image below (2024-02-16.845) was taken 167.7 days after discovery of 2023rrr Position of reported transient (very faint & fading) is shown by white cross-hairs Measured Mag +17.85 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 20:25 UT (#1186050-54) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023rrr on Transients 2023 Page >>

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AT 2023xvv - CV Type Transient

AT 2023xvv (Cygnus) AT 2023xvv (Type: CV) discovered 2023-11-02.121 UT by ZTF Alias: ZTF23aboelln, Gaia23dkh Discovery Magnitude 15.92 (r-ZTF Filter) vs Prior Non-Detection Limiting Mag 17.31 Outburst in candidate CV Gaia, 2023-11-27 14:02, mag 17.82 Gaia, 2023-12-25 05:57, mag 19.99 Gaia, 2024-01-21 05:47, mag 20.76  ( TNS 2023xvv | Gaia23dkh )

AT 2023xvv - 2024-02-16 (T+106.7d) Image below (2024-02-16.860) was taken 106.7 days after discovery of 2023xvv Position of reported transient (faded & no longer visible) is shown by white cross-hairs Non-Detection, Limiting Magnitude +17.8 (Clear Filter) Transient appears to have fading and returning towards probable normal mag range (19.0 to 21.0)

Annotated CCD Image (100% size, linear scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 20:46 UT (#1186058-61) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023xvv on Transients 2023 Page >>

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AT 2023xzr - Type YSO Transient

AT 2023xzr (Orion) AT 2023xzr (Type: YSO) discovered 2023-11-08.655 UT by Gaia Alias: Gaia23dcm Discovery magnitude 16.18 (G-Gaia Filter) vs Historic Magnitude 16.39 +/- 0.06 (SD) Long slow brightening in YSO  ( TNS 2023xzr  | Gaia23dcm )

AT 2023xzr - 2024-02-16 (T+100.2d) Image below (2024-02-16.821) was taken 100.2 days after discovery of 2023xzr Position of reported transient (distinct) is shown by white cross-hairs Measured Magntitude  +13.18 (Clear Filter)

Annotated CCD Image (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 19:48 UT (#1186035-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023xzr on Transients 2023 Page >>

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AT 2024vf - CV Type Transient

AT 2024vf (Cancer) AT 2024vf (Type: CV) discovered 2024-01-09.678 UT by Tadashi Kojima Alias: TCP J09174122+0736487 Discovery magnitude 14.0 (Clear Filter) Corresponds to SDSS J091741.29+073647.4, Cataclysmic Binary Candidate with normal magnitude 21.5  ( TNS 2024vf )

AT 2024vf - 2024-02-16 (T+38.3d) Image below (2024-02-16.949) was taken 38.3 days after discovery of 2024vf Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Mag +18.2 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 22:49 UT (#1186110-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024vf on Transients 2024 Page >>

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IC 564 - Spiral Galaxy with Type Ia Supernova 2023abqf

IC 564 with SN 2023abqf (Sextans) SN 2023abqf (Type: Ia) discovered 2023-12-26.492 UT by ATLAS Alias: ATLAS23xws, Gaia24adb Discovery Magnitude 18.23  (orange-ATLAS Filter) Confirmed SN Ia Gaia, 2023-12-24 20:22 , 19.42 (pre-discovery) Gaia, 2024-01-04 08:30, 16.01                              ( TNS 2024gy  | Gaia24adb )

IC 564 with SN 2023abqf - 2024-02-16 (T+52.4d) Image below (2024-02-16.928) was taken 52.4 days after discovery of 2023abqf Position of reported SN (fading) is indicated by white cross-hairs. Estimated Magnitude +16.7 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 22:20 UT (#1186096-97) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023abqf (in IC 564) on Supernova 2023 Page >>

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NGC 2345 - Open Cluster

NGC 2345 (Canis Major)  [ Open Star Clusters ]

Annotated CCD Image (70% size, linear scale) 6 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 21:37 UT (#1186077-83) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 2345 - Earlier Image (Dec 2023)

Annotated CCD Image (70% size, linear scale) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-12-02 03:27 UT (#1170274-78) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 4216 - Spiral Galaxy with Type Ia Supernova 2024gy

NGC 4216 with SN 2024gy (Virgo) SN 2024gy (Type: Ia, z=0.001183) discovered 2024-01-04.678 UT by Koichi Itagaki Alias: AT2023acjv, AT2024ix, ASASSN-24ac, PSN J12155131+1306561 Discovery Magnitude 16.3 ( Clear Filter)  ( TNS 2024gy )

NGC 4216 with SN 2024gy - 2024-02-17 (T+43.4d) No standard images acquired (due to cloud)

SN 2024gy Spectra - 2024-02-17 (T+43.4d) Poor quality bright sky background, low SNR

Annotated CCD Image (100% size, square root scale, rotated, cropped) 2 x 180s exposure (average combine), 2x2 binning, S Filter 2024-02-17 00:57 UT (#1186126-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2024gy Spectra - 2024-02-17 (T+43.4d) Very low signal/noise. Unable to get a proper spectrum

Spectra Chart 2 x 180s exposure (average combine), 2x2 binning, S Filter 2024-02-17 00:57 UT (#1186126-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024gy (in NGC 4216) on Supernova 2024 Page >>

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NGC 7735 - Elliptical Galaxy with Type Ia Supernova 2024we

NGC 7735 with SN 2024we (Pegasus) SN 2024we (Type: Ia) discovered 2024-01-11.110 UT by ASAS-SN Alias: ASASSN-24ag, Gaia24ahp, ATLAS18whp, PS24pn Discovery Magnitude 17.0 ( g-Sloan Filter) Confirmed SN Ia Gaia, 2024-01-18 01:09,mag 17.09  ( TNS 2024we | Gaia24ahp )

NGC 7735 with SN 2024we - 2024-02-16 (T+36.8d) Image below (2024-02-16.882) was taken 36.8 days after discovery of 2024we Position of reported SN (not separately distinguishable) is indicated by white cross-hairs.

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-16 21:18 UT (#1186070-74) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024we (in NGC 7735) on Supernova 2024 Page >>

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UGC 4269 - Spiral Galaxy with Type Ia-91T Supernova 2023dxb

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