David's Astronomy Pages Images - Session 1220 (2024-05-20)

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Session Notes

29P/Schwassmann-Wachmann - Comet C/2023 A3 (Tsuchinshan-ATLAS) - Comet     AT 2024ivo - CV Type Transient (Attempt)     LEDA 1846725 - Galaxy with Type II Supernova 2024iss LEDA 2222714 - Galaxy with Type Ia Supernova 2024iey NGC 6106 - Spiral Galaxy with Type Ib Supernova 2024ahv     UGC 8630 - Spiral Galaxy with Type II Supernova 2024drv UGC 11067 - Spiral Galaxy with Type II Supernova 2024grw     Variable Stars (photometric monitoring) - BL Lac      Nearby Stars (astrometric monitoring) - None

- All-Night Session (x hrs)     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: x°C (min) - CCD Temperature:   -x°/ -15° C - Notes from 2024-05-20 >>     -

Observing Result

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29P/Schwassmann-Wachmann - Comet

29P/Schwassmann-Wachmann - 2024-05-20 (passing through Cancer) Sun Distance 6.20 AU (turning) Earth Distance 6.61 AU (988.6 million km)		29P/Schwassmann-Wachmann - 2024-05-20 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 19.06 arcsec/hr, Dec -5.73 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 8 x 90s exposure (average combine), 3x3 binning, Clear Filter 2024-05-20 22:55 UT (#1220006-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (125% size, square root scale, cropped) Image details as left
Images of 29P/Schwassmann-Wachmann on Comets 2023 Page >>
Images of 29P/Schwassmann-Wachmann on Comets 2024 Page >>

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C/2023 A3 (Tsuchinshan-ATLAS) - Comet

C/2023 A3 (Tsuchinshan-ATLAS) - 2024-05-20 (passing through Virgo) Sun Distance 2.49 AU (approaching) Earth Distance 1.76 AU (263.0 million km)		C/2023 A3 (Tsuchinshan-ATLAS) - 2024-05-20 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -95.12 arcsec/hr, Dec 14.87 arcsec/hr)
Annotated CCD Image (50% size, log scale) 60s exposure (single frame), 3x3 binning, Clear Filter 2024-05-20 23:07 UT (#1220016) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, log scale, cropped) 10 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-05-20 23:14 UT (#1220016-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
C/2023 A3 (Tsuchinshan-ATLAS) - 2024-05-20		C/2023 A3 (Tsuchinshan-ATLAS) - 2024-05-20
False Color CCD Image (50% size, log scale) 10 x 60s exposure (average combine), 3x3 binning, Clear Filter 2024-05-20 23:14 UT (#1220016-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		False Color CCD Image (100% size, log scale, cropped) Image details as left
Images of C/2023 A3 Tsuchinshan-ATLAS on Comets 2024 Page >>

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AT 2024ivo - CV Type Transient (Attempt)

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LEDA 1846725 - Galaxy with Type II Supernova 2024iss

LEDA 1846725 with SN 2024iss (Coma Berenices) SN 2024iss (Type: II) discovered 2024-05-12.901 UT by GOTO Alias: GOTO24bmf, ZTF24aankvcy, ATLAS24hhy Discovery Magnitude 14.58 (L-GOTO Filter) vs Prior Non-Detection Limiting Magnitude 19.5  ( TNS 2024iss )

LEDA 1846725 - Galaxy LEDA 1846725 (alias PGC 1846725, catalog mag +18.0) with adjacent galaxies  IC 3990 (catalog mag +14.4), PGC 1848187 (catalog mag +16.4), PGC 1844215 (catalog mag +17.4)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-05-20 23:35 UT (#1220028-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

LEDA 1846725 with SN 2024iss - 2024-05-20 (T+8.1d) Image below (2024-05-20.976) was taken 8.1 days after discovery of 2024iss Position of reported SN (distinct) is indicated by white cross-hairs. Measured Magnitude +13.55 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-05-20 23:35 UT (#1220028-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024iss (in LEDA 1846725) on Supernova 2024 Page >>

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LEDA 2222714 - Galaxy with Type Ia Supernova 2024iey

LEDA 2222714 with SN 2024iey (Hercules) SN 2024iey (Type: Ia) discovered 2024-05-06.424 UT by ZTF Alias: ZTF24aamipnt Discovery Magnitude 19.87 (r-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 20.84  ( TNS 2024iey )

LEDA 2222714 with SN 2024iey - 2024-05-21 (T+14.6d) Image below (2024-05-21.006) was taken 14.6 days after discovery of 2024iey Position of reported SN (faint, brightening?) is indicated by white cross-hairs. Measured Magnitude +15.54 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-05-21 00:16 UT (#1220042-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024iey (in LEDA 2222714) on Supernova 2024 Page >>

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NGC 6106 - Spiral Galaxy with Type Ib Supernova 2024ahv

NGC 6106 with SN 2024ahv (Hercules) SN 2024ahv (Type: Ib) discovered 2024-01-16.852 UT by Hidehiko Okoshi Alias: PS24vc, ATLAS24baw Discovery magnitude 16.2 (Clear Filter)  ( TNS 2024ahv)

NGC 6106 with SN 2024ahv - 2024-05-21 (T+125.2d) Image below (2024-05-21.027) was taken 125.2 days after discovery of 2024ahv Position of reported transient (faint) is shown by white cross-hairs Estimated Magnitude +16.3 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-05-21 00:48 UT (#1220054-58) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024ahv (in NGC 6106) on Supernova 2024 Page >>

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UGC 8630 - Spiral Galaxy with Type II Supernova 2024drv

UGC 8630 with SN 2024drv (Canes Venatici) SN 2024drv (Type: II) discovered 2024-03-02.513 UT by ATLAS Alias: ATLAS24dct Discovery Magnitude 16.56 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Mag 18.86  ( TNS 2024drv )

UGC 8630 with SN 2024drv - 2024-05-20 (T+79.5d) Image below (2024-05-20.992) was taken 79.5 days after discovery of 2024drv Position of reported SN (distinct, fading) is indicated by white cross-hairs. Measured Magnitude +15.86 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-05-20 23:57 UT (#1220035-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024drv (in UGC 8630) on Supernova 2024 Page >>

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UGC 11067 - Spiral Galaxy with Type II Supernova 2024grw

UGC 11067 with SN 2024grw (Ophiuchus) SN 2024grw (Type: II) discovered 2024-04-16.821 UT by ATLAS Alias: ATLAS24fvu, Gaia24bit Discovery Magnitude 18.36 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 20.09 (ATLAS) vs Historic Magnitude 20.45 +/- 0.05 (Gaia) Gaia comment : Confirmed SN II Gaia, 2024-02-01 06:55, mag 20.44 Gaia, 2024-04-16 19:43, mag 18.60 Gaia, 2024-05-03 06:03, mag 17.49 It is likely that the SN's progenitor is not the same as Gaia's  historical object recorded at mag 20.45 +/- 0.05, which is likely a foreground star since  the brightening in magnitude (only 3 mag or so ) is not consistent with the 10 mag brightening that would be expected for a SN.  The real progenitor would be expected to lay at mag 27 or so.  ( TNS 2024grw | Gaia24bit )

UGC 11067 with SN 2024grw - 2024-05-21 (T+34.2d) Image below (2024-05-21.042) was taken 34.2 days after discovery of 2024grw Position of reported supernova (faint) is shown by white cross-hairs Estimated Magnitude +17.3 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-05-21 01:08 UT (#1220061-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024grw (in UGC 11067) on Supernova 2024 Page >>

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