David's Astronomy Pages CCD Images - Session 927 (2021-10-24)

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Session Notes

4P/Faye - Comet (Attempt) 67P/Churyumov-Gerasimenko - Comet C/2019 L3 (ATLAS) - Comet C/2021 A1 (Leonard) - Comet     Nova Per 2020 - Nova (V1112 Per, AT2020abap) Nova Cas 2021 - Nova (V1405 Cas)      AT 2021bpy - Transient (Type Unknown) AT 2021zkf - YSO Transient, V0645 Cyg     IC 190 - Elliptical Galaxy with Type Ia Supernova 2021abko M110 - Elliptical Galaxy with Nova AT 2021yul      NGC 9 - Spiral Galaxy with Type Ib Supernova 2021zju NGC 1166 - Spiral Galaxy with Type II Supernova 2021zby     UGC 235 - Spiral Galaxy with Type II Supernova 2021aazm UGC 2505 - Irregular Galaxy with Type II Supernova 2021bge UGC 5751 - Spiral Galaxy with Type Ibn Supernova 2021abcw UGC 5994 - Spiral Galaxy with Transient AT2021ably      Variable Stars (photometric monitoring) - RX And, BL Lac, RR Lyr      Nearby Stars (astrometric monitoring) - Groombridge 34

- Full night Session (8.8 hours). - Clear skies all night but poor seeing and moonlit - Main aims of the session were to acquire a selection of targets including  Comet 67P/Churyumov-Gerasimenko - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 12°C (min) - CCD Temperature:  -10°C - Notes from 2021-10-24 >>    [ Local Files >> ]   -

4P/Faye - Comet (Attempted Sighting)

4P/Faye - 2021-10-25 (passing through Gemini) Sun Distance 1.69 AU (receeding / turning ?) Earth Distance 1.05 AU (157.2 million km) Comet last observed in Mar 2007 No sign of comet at or near the expected position of comet (indicated by white circle)		4P/Faye -  2021-10-25, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 44.43 arcsec/hr, Dec -23.59 arcsec/hr) No indication of comet at expected position
Annotated CCD Image (50% size, square root scale) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2021-10-25 04:42 UT (#927167-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (150% size, log scale, cropped) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2021-10-25 04:42 UT (#927167-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Earlier Images of 4P/Faye on Comets 2007 Page >>
Images of 4P/Faye on Comets 2021 Page >>
Later Images of 4P/Faye on Comets 2022 Page >>

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67P/Churyumov-Gerasimenko - Comet

67P/Churyumov-Gerasimenko - 2021-10-25 (passing through Gemini) Sun Distance 1.21 AU (approaching) Earth Distance 0.42 AU (63.5 million km)		67P/Churyumov-Gerasimenko - 2021-10-25, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 164.14 arcsec/hr, Dec 15.84 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 2 x 45s exposure (average combine), 3x3 binning, C Filter 2021-10-25 04:53 UT (#927178-79) 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) 15 x 45s exposure (average combine), 3x3 binning, C Filter 2021-10-25 04:59 UT (#927178-92) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 67P/Churyumov-Gerasimenko on Comets 2021 Page >>

67P/Churyumov-Gerasimenko - False Colour Image(s)  Inverse Spectrum

67P/Churyumov-Gerasimenko - 2021-10-25

False Colour CCD Image (70% size, log scale) 15 x 45s exposure (average combine), 3x3 binning, C Filter 2021-10-25 04:59 UT (#927178-92) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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C/2019 L3 (ATLAS) - Comet

C/2019 L3 (ATLAS) - 2021-10-25 (passing through Lynx) Sun Distance 3.62 AU (approaching) Earth Distance 3.31 AU (495.0 million km)		C/2019 L3 (ATLAS) - 2021-10-25, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 12.85 arcsec/hr, Dec -12.90 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 2 x 45s exposure (average combine), 3x3 binning, C Filter 2021-10-25 05:14 UT (#927197-98) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) 8 x 45s exposure (average combine), 3x3 binning, C Filter 2021-10-25 05:17 UT (#927197-204) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2019 L3 (ATLAS) on Comets 2021 Page >>

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C/2021 A1 (Leonard) - Comet

C/2021 A1 (Leonard) - 2021-10-25 (passing through Ursa Major) Sun Distance 1.50 AU  (approaching) Earth Distance 1.78 AU (266.1 million km)		C/2021 A1 (Leonard) - 2021-10-25, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 43.16 arcsec/hr, Dec -12.40 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, C Filter 2021-10-25 04:24 UT (#927154-56) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) 8 x 60s exposure (average combine), 3x3 binning, C Filter 2021-10-25 04:28 UT (#927154-62) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2021 A1 (Leonard) on Comets 2021 Page >>

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Nova Per 2020 - Nova (V1112 Per, AT2020abap)

Nova Per 2020 (Perseus) Nova in Perseus discovered 2020/11/25.807 [ Novae ] Nova Per 2020 discovered independently by Seiji Ueda and Stanislav Korotkiy et al AT2020abap (Type: CV) reported 2020/11/27.230 UT by PGIR Alias: N Per 2020 , PGIR20fbf, TCP J04291888+4354233, TCP J04291884+4354232, V1112 Per

Nova Per 2020 - 2021-10-25 (T+333.3d) Image below (2021-10-25.063) was taken 333.3 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +15.6

Annotated CCD Image (100% size, linear scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2021-10-25 01:36 UT (#927087-91) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova Per 2020 on Novae Page >>

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Nova Cas 2021 - Nova (V1405 Cas)

Nova Cas 2021 (Cassiopeia) Nova in Cassiopeia discovered 2021-03-18.4236,  by Yuji Nakamura (Japan) Magnitude at discovery +9.6 (unfiltered CCD) AT2021hkn (Type: Nova) reported by 2021/03/30.055 UT by Gaia Alias: Gaia21bpe, AT2021hkn, V1405 Cas

Nova Cas 2021 / AT2021hkn - 2021-10-25 (T+220.6d) Image below (2021-10-25.014) was taken 220.6 days after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +8.05 (linked with Detection Threshold = 50)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2021-10-25 00:22 UT (#927053-57) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Cas 2021 (V1405 Cas) Spectra - 2021-10-25 (T+220.6d)

Spectra produced in AstroMain using Image taken with Star Analyser 200 3 x 30s exposure (average combine), 2x2 binning, S Filter 2021-10-25 00:25 UT (#927058-61) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova Cas 2021 on Novae Page >>

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AT 2021bpy - Transient (Type Unknown)

AT 2021bpy (Andromeda) AT2021bpy (Type: unk) discovered 2021/02/03.162 UT by ZTF Alias: ZTF19aaywash Discovery Magnitude 14.19 (r-ZTF Filter)  ( Rochester Supernova site | Discovery Image  ) | ZTF19aaywash ) ( TNS 2021bpy )   (see https://lasair.roe.ac.uk/lasair/static/ztf/stamps/jpg/1494/candid1494161754615015005.jpg )

AT 2021bpy - 2021-10-25 (T+263.9d) Image below (2021-10-25.073) was taken 263.9 days after discovery of 2021bpy Previously reported transient position (now faded & no longer visible) is shown approximately by white cross hairs.

Annotated CCD Image  (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-25 01:54 UT (#927094-98) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021bpy on Transients 2021 Page >>

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AT 2021zkf - YSO Transient, V0645 Cyg

AT 2021zkf / V0645 Cyg (Cygnus) AT2021zkf (Type: YSO) discovered 2021-09-13.232 UT by Gaia Alias: Gaia21ego, GCVS V0645 Cyg Triggering Magnitude 11.16 (G-Gaia Filter) vs Historic Magnitude 12.14 +/- 0.29 SD Slow rise of known YSO V645 Cyg, 1 mag in over 5 years ( TNS 2021zkf | Gaia21ego )

AT 2021zkf - 2021-10-24 (T+41.8d) Image below (2021-10-24.999) was taken 41.8 days after discovery of 2021zkf Position of transient (distinct, fading) is shown by white cross-hairs Measured Magnitude +11.41 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-25 00:06 UT (#927045-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021zkf / V0645 Cyg on Transients 2021 Page >>

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IC 190 - Elliptical Galaxy with Type Ia Supernova 2021abko

IC 190 with SN2021abko (Aries) SN 2021abko (Type: Ia) discovered 2021-10-14.520 UT by ASAS-SN Alias: ASASSN-21tk, ZTF19acetzrc Discovery Magnitude 16.9 (g-Sloan Filter) vs Prior Non-Detection Limiting Magnitude 18.0  (Rochester Supernova site | TNS 2021abko )

IC 190 with SN 2021abko - 2021-10-25 (T+10.6d) Image below (2021-10-25.139) was taken 10.6 days after discovery of 2021abko Galaxy with supernova shown by white cross-hairs Measured magnitude of galaxy nucleus + SN is +14.04 (vs host galaxy catalog mag of +14.2 or +15.2) Poor quality image (cloud/single frame)

Annotated CCD Image  (125% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-10-25 03:20 UT (#927138) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN2021abko (IC 190) on Supernovae 2021 Page >>

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M110 - Elliptical Galaxy with Nova AT 2021yul

M110 with AT 2021yul (Andromeda) AT 2021yul (Type: Nova) discovered 2021-09-13.740 UT by XOSS Alias: PSP21J, ZTF21acbutpl Discovery Magnitude +17.7 (Clear Filter) vs Prior Non-Detection Limiting Magnitude 18.0  (Rochester Supernova site | Rochester EGN Page |  TNS 2021yul )

M110 with AT 2021yul - 2021-10-25 (T+41.4d) Image below (2021-10-25.116) was taken 41.4 days after discovery of 2021yul Position of earlier nova (faded & no longer visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +19.2 (Clear Filter)

Annotated CCD Image  (100% size, square root scale, cropped 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-25 02:55 UT (#927122-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021yul (in M110) on Transients 2021 Page >>

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NGC 9 - Spiral Galaxy with Type Ib Supernova 2021zju

NGC 9 with SN 2021zju (Pegasus) SN 2021zju (Type: Ib) discovered 2021-09-24.483 UT by ATLAS Alias: ATLAS21bjbm, ZTF21acdxhuv  (Rochester Supernova site | Enrico Prosperi image )

NGC 9 with SN 2021zju - 2021-10-25 (T+30.5d) Image below (2021-10-25.024) was taken 30.5 days after discovery of 2021zju Position of SN (faint) is shown by white cross-hairs Estimated Magnitude +16.9 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-25 00:42 UT (#927067-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021zju (NGC 9) on Supernovae 2021 Page >>

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NGC 1166 - Spiral Galaxy with Type II Supernova 2021zby

NGC 1166 with SN 2021zby (Aries) SN 2021zby (Type: II) discovered 2021-09-17.453 UT by ATLAS Alias: ATLAS21bixf  (Rochester Supernova site | Enrico Prosperi image )

NGC 1166 with SN 2021zby - 2021-10-25 (T+37.7d) Image below (2021-10-25.162) was taken 37.7 days after discovery of 2021zby Position of SN (faint) is shown by white cross-hairs Poor quality image (poor seeing, single frame)

Annotated CCD Image  (150% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-10-25 03:53 UT (#927142) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021zby (NGC 1166) on Supernovae 2021 Page >>

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UGC 235 - Spiral Galaxy with Type II Supernova 2021aazm

UGC 235 with SN2021aazm (Andromeda) SN 2021aazm (Type: II) discovered 2021-10-09.830 UT by XOSS Alias: XM75HT Discovery Magnitude 18.32 (Clear Filter)  (Rochester Supernova site | Stan Howerton image | TNS 2021aazm )

UGC 235 with SN 2021aazm - 2021-10-25 am (T+15.3d) Image below (2021-10-25.094) was taken 15.3 days after discovery of 2021aazm Position of supernova (faint) is shown by white cross-hairs Measured Magnitude +18.29 (Clear Filter)

Annotated CCD Image  (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-25 02:24 UT (#927110-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN2021abko (UGC 235) on Supernovae 2021 Page >>

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UGC 2505 - Irregular Galaxy with Type II Supernova 2021bge

UGC 2505 with SN 2021bge (Cetus) SN 2021bge (Type: II) discovered 2021/01/27.517 UT by Koichi Itagaki Alias: ATLAS21dfn, Gaia21aqd Discovery Magnitude 16.8 (Clear Filter) vs Prior Non-Detection in DSS Image Confirmed SN II Gaia, 2021-02-05 00:41:24, Mag 16.74 Gaia, 2021-03-17 05:48:37, Mag 17.20 Gaia, 2021-03-21 11:52:04, Mag 17.23 Gaia, 2021-06-28 20:08:11, Mag 20.09 Gaia, 2021-07-18 08:13:24, Mag 20.42 Gaia, 2021-08-20 09:38:19, Mag 20.70  ( Rochester Supernova site | Discovery Image  ) ( TNS 2021bge | Gaia21aqd )

UGC 2505 with SN 2021bge - 2021-10-25 (T+270.5d) Image below (2021-10-25.048) was taken 270.5 days after discovery of 2021bge Position of earlier SN (faded & no longer visible) is shown by white cross-hairs

Annotated CCD Image  (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-25 01:16 UT (#927080-83) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021bge (UGC 2505) on Supernovae 2021 Page >>

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UGC 5751 - Spiral Galaxy with Type Ibn Supernova 2021abcw

UGC 5751 with SN2021abcw (Leo) SN 2021abcw (Type: Ibn) discovered 2021-10-11.480 UT by ASAS-SN Alias: ASASSN-21td, Gaia21ewv Discovery Magnitude 17.2 (g-Sloan Filter) vs Prior Non-Detection Limiting Magnitude 17.5 Gaia, 2021-10-26 06:06:32, Mag 18.60 Gaia, 2021-11-19 13:50:35, Mag 19.95  (Rochester Supernova site | Discovery Image ) ( TNS 2021abcw | Gaia21ewv )

UGC 5751 with SN 2021abcw - 2021-10-25 (T+13.7d) Image below (2021-10-25.228) was taken 13.7 days after discovery of 2021abcw SN (very faint) is shown by white cross-hairs Measured Magnitude +17.24 (Clear Filter)

Annotated CCD Image  (150% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-25 05:33 UT (#927209-11) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of  SN 2021abcw (UGC 5751) on Supernovae 2021 Page >>

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UGC 5994 - Spiral Galaxy with Transient AT2021ably

UGC 5994 with AT2021ably (Leo) AT2021ably (Type: unk) discovered 2021-10-14.615 UT by ATLAS Alias: ATLAS21bkdw, Gaia21eym,  Discovery Magnitude 17.87 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.44  (Rochester Supernova site | TNS 2021ably | Gaia21eym )

UGC 5994 with AT 2021ably - 2021-10-25 (T+10.6d) Image below (2021-10-25.173) was taken 10.6 days after discovery of 2021ably Position of reported transient (close to galaxy centre & not separately distinguishable) is shown by white cross-hairs

Annotated CCD Image  (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-25 04:14 UT (#927149-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of  AT 2021ably (in UGC 5994) on Transients 2021 Page >>

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