David's Astronomy Pages CCD Images - Session 936 (2021-11-23)

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67P/Churyumov-Gerasimenko - Comet C/2019 L3 (ATLAS) - Comet C/2021 A1 (Leonard) - Comet     GCVS RR Lyr - Variable Star,  RR Lyr Type (HIP 95497) Nova Cas 2021 - Nova (V1405 Cas)     EGN 2021aceg - Extragalactic Nova in Spiral Galaxy M31     NGC 9 - Spiral Galaxy with Type Ib Supernova 2021zju NGC 327 - Spiral Galaxy with Type Ia Supernova 2021aclv NGC 1569 - Irregular Galaxy with Type HPM Transient AT 2021aczn NGC 6627 - Spiral Galaxy with Type II Supernova 2021abkm     UGC 3240 - Spiral Galaxy with Type Ia Supernova 2021vau UGC 5751 - Spiral Galaxy with Type Ibn Supernova 2021abcw UGC 5760 with Type II Supernova 2020zoq (Faded)      Variable Stars (photometric monitoring) - RX And, U And, SY Cnc, RR Lyr, SU Tau, ER UMa      Nearby Stars (astrometric monitoring) - HH And, DX Cnc, Groombridge 34, Scholz's Star

- All Night session (12.1 hours) -   - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 2°C (min) - CCD Temperature:  -20°C - Notes from 2021-11-23 >>    [ Local Files >> ]

67P/Churyumov-Gerasimenko - Comet

67P/Churyumov-Gerasimenko (passing through Cancer) Sun Distance 1.24 AU (turning) Earth Distance 0.42 AU (63.1 million km) Poor contrast due to close proximity to bright Moon		67P/Churyumov-Gerasimenko - 2021-11-24, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 86.11 arcsec/hr, Dec 2.22 arcsec/hr) Poor contrast due to close proximity to bright Moon
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-11-24 03:22 UT (#936246-48) 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) 11 x 45s exposure (average combine), 3x3 binning, C Filter 2021-11-24 03:21 UT (#936240-53) 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 >>

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C/2019 L3 (ATLAS) - Comet

C/2019 L3 (ATLAS) (passing through Lynx) Sun Distance 3.58 AU  (approaching) Earth Distance 2.88 AU (430.6 million km) Poor contrast due to close proximity to bright Moon		C/2019 L3 (ATLAS)  - 2021-11-24, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -16.13 arcsec/hr, Dec -16.05 arcsec/hr) Poor contrast due to close proximity to bright Moon
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-11-24 02:51 UT (#936227-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, square root scale, cropped) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-11-24 02:51 UT (#936227-33) 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  (passing by NGC 4631)

C/2021 A1 (Leonard) (passing through Canes Venatici) Sun Distance 1.03 AU (approaching) Earth Distance 0.77 AU (114.9 million km) Passing by NGC 4631 (Caldwell 32)		C/2021 A1 (Leonard) - 2021-11-17, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 152.49 arcsec/hr, Dec -31.49 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, C Filter 2021-11-24 03:47 UT (#936264-66) 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) 9 x 60s exposure (average combine), 3x3 binning, C Filter 2021-11-24 03:50 UT (#936264-72) 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 >>

C/2021 A1 (Leonard)  - False Colour Image(s)  Inverse Spectrum

C/2021 A1 (Leonard) - 2021-11-24 Passing by NGC 4631 (top left)

False Colour CCD Image (70% size, log scale) 9 x 60s exposure (average combine), 3x3 binning, C Filter 2021-11-24 03:50 UT (#936264-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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GCVS RR Lyr - Variable Star,  RR Lyr Type (HIP 95497)

GCVS RR Lyr (Lyra) Alias: HIP 95497 RR Lyr, Period 0.5669 days

RR Lyr Spectra - Corrected.

Spectra produced in AstroMain using Image taken with Star Analyser 200 5 x 45s exposure (average combine), 2x2 binning, S Filter 2021-11-23 18:56 UT (#936046-50) 12" LX200R (at f/10.4) + ST-10XME

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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) AT 2021hkn (Type: Nova) reported by 2021/03/30.055 UT by Gaia Alias: Gaia21bpe, AT 2021hkn, V1405 Cas

Nova Cas 2021 / AT 2021hkn - 2021-11-24 (T+250.7d) Image (2021-11-24.079) was taken 250.7 days after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +8.64 (poor quality image) (linked with Detection Threshold = 50)

Annotated CCD Image (100% size, linear scale, cropped) 3 x 30s exposure (average combine), 3x3 binning, C Filter 2021-11-24 01:56 UT (#936185-89) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Cas 2021 (V1405 Cas) Spectra - 2021-11-24 (T+250.7d)

Spectra produced in AstroMain using Image taken with Star Analyser 200 30s exposure (single frame), 2x2 binning, S Filter 2021-11-24 02:00 UT (#936193) 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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EGN 2021aceg - Extragalactic Nova in Spiral Galaxy M31

Nova 2021aceg in M31 (Andromeda) AT 2021aceg (Type: EGN) discovered 2021-10-25.570 UT by XOSS Alias: PSP21ac, PNV J00473256+3938102 Discovery Magnitude 16.1 (Clear Filter) vs Prior Non-Detection Limiting Magnitude 17.5  (Rochester Supernova site | Rochester EGN Page | Klaus Wenzel image ) ( TNS 2021aceg )

Nova 2021aceg in M31 - 2021-11-23 (T+29.2d) Image below (2021-11-23.751) was taken 29.2 days after discovery of 2021aceg EGN (faint) is shown by white cross-hairs

Annotated CCD Image  (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-23 18:09 UT (#936013-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova 2021aceg in M31 - Earlier Image 2021-10-31 (T+5.5d) Image below (2021-10-31.102) was taken 5.5 days after discovery of 2021aceg EGN is shown by white cross-hairs Measured magnitude +17.15 Object confirmed not to be a known foreground star using Aladin

Annotated CCD Image  (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-31 02:36 UT (#930169-73) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova AT 2021aceg (in M31) 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 - 2021-11-23 (T+60.3d) Image below (2021-11-23.798) was taken 60.3 days after discovery of 2021zju Position of SN (faint) is shown by white cross-hairs

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-23 19:18 UT (#936065-69) 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 327 - Spiral Galaxy with Type Ia Supernova 2021aclv (?)

NGC 327 with SN SN 2021aclv (Cetus) SN 2021aclv (Type: Ia) discovered 2021-10-30.214 UT by ZTF Alias: ZTF21acjeegy  (Rochester Supernova site )

NGC 327 with SN 2021aclv - 2021-11-23 (T+24.6d) Image below (2021-11-23.813) was taken 24.6 days after reported discovery of 2021aclv Supernova's reported position is shown by white cross-hairs It is not possible to demonstrate presence of SN as it is  too close to the host galaxy's nucleus and too dim Measured magnitude +15.2 (nucleus + SN) vs Host Galaxy catalog mag (+13.5 or +14.1) & SN reported magnitude at discovery (+17.3) The bright object lying above the galaxy is confirmed to be a star (Aladin)

Annotated CCD Image  (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-23 19:37 UT (#936074-76) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021aclv (NGC 327) on Supernovae 2021 Page >>

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NGC 1569 - Irregular Galaxy with Type HP Transient AT 2021aczn

NGC 1569 with AT 2021aczn (Camelopardalis) AT 2021aczn (Type: HPM) discovered 2021-11-01.000 UT by Jordi Camarasa (  (Rochester Supernova site | Odd Trondal image )  HPM - High Proper Motion star ?

NGC 1569 - 2021-11-23 (T+22.7d) Image below (2021-11-23.734) was taken 22.7 days after reported discovery of 2021aczn No indication of any obvious transient object (new image compares well with an image taken in 2013)

CCD Image (125% size, log scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-23 17:46 UT (#936004-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 1569 - Earlier Image  2021-11-09 (T+8.9d) Image below (2021-11-09.898) was taken 8.9 days after discovery of 2021aczn No indication of any obvious transient object (new image compares well with an image taken in 2013

CCD Image (125% size, log scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-09 21:42 UT (#932060-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

The object marked as a 'Supernova' in Odd Trondal image is shown in the  image below by white cross-hairs, but the feature doesn't seem to have changed since image taken in 2013

Annotated CCD Image (125% size, log scale, cropped) Image details as above

NGC 1569 - Earlier Image (2013)

CCD Image (125% size, log scale, cropped) 4 x 120 sec exposure (average combine), 3x3 binning, C Filter 2013-10-15 19:08hUT (#549026-31) 12" LX200R  (at f/9.7) + ST-10XME

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NGC 6627 - Spiral Galaxy with Type II Supernova 2021abkm

NGC 6627 with SN 2021abkm (Hercules) SN 2021abkm (Type: II) discovered 2021-10-14.208 UT by ATLAS Alias: ATLAS21bkcp, Gaia21ewt Discovery Magnitude 18.15 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.03 Confirmed SN II Gaia, 2021-10-26 04:19:46, Mag 18.32 Gaia, 2022-02-18 22:00:41, Mag 20.68 Gaia, 2022-03-17 17:43:09, Mag 20.87  (Rochester Supernova site | Enrico Prosperi image ) ( TNS 2021abkm | Gaia21ewt )

NGC 6627 with SN 2021abkm  (T+40.6d)

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-23 18:32 UT (#936019-23) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 6627 with SN 2021abkm - 2021-11-23 (T+40.6d) Image below (2021-11-23.766) was taken 40.6 days after discovery of 2021abkm SN (faint) is shown by white cross-hairs Object confirmed not to be a known foreground star using Aladin

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-23 18:32 UT (#936019-23) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021abkm (NGC 6627) on Supernovae 2021 Page >>

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UGC 3240 - Spiral Galaxy with Type Ia Supernova 2021vau

UGC 3240 with SN 2021vau (Orion) SN 2021vau (Type: Ia, z=0.036) discovered 2021/08/04.610 UT by ASAS-SN Alias: ASASSN-21ou, Gaia21dzq Host Alias : PGC 16668 (catalog mag +15.5)  (Rochester Supernova site | Discovery image | Gaia21dzq )

UGC 3240 with SN 2021vau - 2021-11-24 (T+111.4d) Image below (2021-11-24.049) was taken 111.4 days after discovery of 2021vau Supernova shown by white indicator line Measured magnitude +15.95 (SN + Host Nucleus) (vs catalog mag for UGC/PGC 16668 of +15.5)

CCD Image  (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-24 01:21 UT (#936167-70) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021vau (UGC 3240) on Supernovae 2021 Page >>

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UGC 5751 - Spiral Galaxy with Type Ibn Supernova 2021abcw

UGC 5751 with SN 2021abcw (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 - 2021-11-24 (T+43.7d) Image below (2021-11-24.185) was taken 43.7 days after discovery of 2021abcw Position of reported SN (not visible) is shown by white cross-hairs

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-24 04:36 UT (#936289-93) 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 5760 - Spiral Galaxy with Type II Supernova 2020zoq (Faded)

UGC 5760 w/SN 2020zoq (Leo) SN 2020zoq (Type II, z=0.0, zhost=0.010040) discovered 2020/11/14.561 by ASAS-SN  (Rochester Supernova site | Discovery Image | TNS 2020zoq )

UGC 5760- Detail Image below (2021-11-24.201) was taken 374.6 days after discovery of 2020zoq (now faded)

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-24 04:58 UT (#936296-300) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 5760 - Earlier Image (Nov 2020) UGC 5760 with SN 2020zoq - 2020-11-22 (T+7.7d) Image below (2020-11-22.259) was taken 7.7 days after discovery of SN 2020zoq SN is shown by white cross hairs.   Measured magnitude +15.7

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-11-22 06:13 UT (#831415-19) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020zoq (UGC 5760) on Supernovae 2020 Page >>

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