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CCD Images - Session 926 (2021-10-22)
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Objects Session Notes
17P/Holmes - Comet 88P/Howell - Comet C/2019 L3 (ATLAS) - Comet C/2021 A1 (Leonard) - Comet Nova Per 2020 - Nova (V1112 Per, AT2020abap) 
AT 2021xmw - Type YSO Transient (V546 Mon) AT 2021zkf - YSO Transient, V0645 Cyg M31 - Spiral Galaxy with CV Type Transient AT2021aaxp NGC 6184 - Spiral Galaxy with Type Ia Supernova 2021wkv 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 5994 - Spiral Galaxy with Transient AT2021ably Variable Stars (photometric monitoring) - RX And, Z And, BL Lac, RR Lyr
- FO Ori attempt failed (due to high cloud)Nearby Stars (astrometric monitoring) - HH And, DX Cnx, 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 2021-10-22 >> [ Local Files >> ] -
| 17P/Holmes - 2021-10-23 (passing through Auriga) Sun Distance 2.75 AU (receeding) Earth Distance 2.15 AU (321.2 million km) Comet's expected position is shown by white circle |
17P/Holmes - 2021-10-23, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -0.26 arcsec/hr, Dec 13.75 arcsec/hr) Position of Comet (not visible) is shown by white circle |
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| Annotated CCD Image (50% size, square root scale) 9 x 60s exposure (average combine), 3x3 binning, C Filter 2021-10-23 05:27 UT (#926240-48) 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) 9 x 60s exposure (average combine), 3x3 binning, C Filter 2021-10-23 05:27 UT (#926240-48) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of 15P/Holmes on Comets 2021 Page >> | ||
| Earlier images of 15P/Holmes on Comets 2007 Page >> |
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| 88P/Howell - 2021-10-23 (passing through Taurus) Sun Distance 3.48 AU (receeding) Earth Distance 2.75 AU (410.8 million km) Expected Position of comet (not visible) is shown by white circle |
88P/Howell - 2021-10-23, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -19.00 arcsec/hr, Dec 0.79 arcsec/hr) |
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| CCD Image (50% size, square root scale) 8 x 60s exposure (average combine), 3x3 binning, C Filter 2021-10-23 03:20 UT (#926154-61) 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) 8 x 60s exposure (average combine), 3x3 binning, C Filter 2021-10-23 03:20 UT (#926154-61) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of 88P/Howell on Comets 2020 Page >> | ||
| Images of 88P/Howell on Comets 2021 Page >> |
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| C/2019 L3 (ATLAS) - 2021-10-23 (passing through Lynx) Sun Distance 3.63 AU (approaching) Earth Distance 3.34 AU (499.8 million km) |
C/2019 L3 (ATLAS) - 2021-10-23, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 14.69 arcsec/hr, Dec -12.82 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 2 x 45s exposure (average combine), 3x3 binning, C Filter 2021-10-23 03:28 UT (#926163-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
CCD Image (100% size, log scale, cropped) 9 x 45s exposure (average combine), 3x3 binning, C Filter 2021-10-23 03:32 UT (#926163-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of C/2019 L3 (ATLAS) on Comets 2021 Page >> |
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| C/2021 A1 (Leonard) - 2021-10-23 (passing through Ursa Major) Sun Distance 1.53 AU (approaching) Earth Distance 1.84 AU (275.2 million km) |
C/2021 A1 (Leonard) - 2021-10-23, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 41.82 arcsec/hr, Dec -12.65 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, C Filter 2021-10-23 04:28 UT (#926212-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
CCD Image (100% size, log scale, cropped) 9 x 60s exposure (average combine), 3x3 binning, C Filter 2021-10-23 04:32 UT (#926212-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of C/2021 A1 (Leonard) on Comets 2021 Page >> |
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| 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 - 2021-10-23 (T+331.4d) Image below (2021-10-23.213) was taken 331.4 days after discovery of nova Nova is shown by white cross hairs. Measured magnitude +15.1 ? Poor quality image - bright, uneven background |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2021-10-23 05:12 UT (#926233-37) 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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| AT 2021xmw (Monoceros) AT 2021xmw (Type: YSO) discovered 2021-08-30.807 UT by Gaia Alias: Gaia21ebu, V546 Mon Alerting magnitude 15.25 (vs Historic magnitude 16.26) 1 magnitude brightening of Orion variable V546 Mon ( TNS 2021xmw | Gaia21ebu ) |
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| Annotated CCD Image (50% size, square root scale) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2022-01-09 23:50 UT (#952150-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| AT 2021xmw - 2021-10-23 (T+53.3d) Image below (2021-10-23.105) was taken 53.3 days after discovery of 2021xmw Position of V546 Mon (faint) is shown by white cross-hairs Measured Magnitude +15.04 (Clear Filter) |
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| Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-23 02:38 UT (#926139-42) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Annotated negative CCD Image (125% size, square root scale, cropped) Image details as above |
| Images of AT 2021xmw / V546 Mon on Transients 2021 Page >> |
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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 - 2021-10-22 (T+39.8d) Image below (2021-10-22.984) was taken 39.8 days after discovery of 2021zkf Position of transient (distinct, brightening) is shown by white cross-hairs Measured Magnitude +11.03 (Clear Filter) |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-22 23:46 UT (#926122-26) 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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| M31 with AT2021aaxp (Andromeda) AT2021aaxp (Type: CV) discovered 2021-10-09.613 UT by Balam Alias: PNV J00444033+4113068 Discovery Magnitude 17.77 (G-Gaia Filter) Spectrum indicates this object is not a nova in M31 but a CV in the Milky Way Galaxy (TNS 2021aaxp classification) Rochester EGN Page | Klaus Wenzel image | TNS 2021aaxp ) |
| M31 with AT 2021aaxp - 2021-10-22 (T+13.3d) Image below (2021-10-22.958) was taken 13.3 days after discovery of 2021aaxp Position of reported transient (no longer visible) is shown by white cross-hairs |
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| Annotated CCD Image (125% size, square root scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-10-22 23:03 UT (#926076-80) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2024aaxp (in M31) on Transients 2021 Page >> |
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| NGC 6184 with SN 2021wkv (Hercules) SN 2021wkv (Type: Ia, zhost=0.027329) discovered 2021/08/20.277 UT by ATLAS Alias: ATLAS21bgqy. Magnitude +18.2 at discovery (Rochester Supernova site ) |
| NGC 6184 with SN 2021wkv - 2021-10-22
(T+63.6d) Image below (2021-10-22.907) was taken 63.6 days after discovery of 2021wkv Position of SN (very faint) is shown by white cross-hairs. Poor quality image (bright sky background) |
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| Annotated CCD Image (125% size, square root
scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-22 21:52 UT (#926017-19) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2021wkv (NGC 6184) on Supernovae 2021 Page >> |
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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 - 2021-10-22 (T+8.6d) Image below (2021-10-22.851) was taken 8.6 days after discovery of 2021abkm SN (very faint) is shown by white cross-hairs Poor quality image (bright sky background) |
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| Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-22 20:33 UT (#926004-07) 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 with SN2021vau (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 - 2021-10-23 (T+79.5d) Image below (2021-10-23.118) was taken 79.5 days after discovery of 2021vau Supernova position (v. close to galaxy centre) shown by white indicator line Poor quality image (bright sky background, low S/N) |
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| CCD Image (150% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-23 02:55 UT (#926145-47) 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 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 - 2021-10-23 (T+11.7d) Image below (2021-10-23.197) was taken 11.7 days after discovery of 2021abcw SN (not visible) shown by white cross-hairs Very poor quality image (bright sky background, low S/N) |
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| Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-23 04:53 UT (#926225-29) 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 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 - Spiral Galaxy |
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| Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-17 06:12 UT (#934270-73) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| UGC 5994 with AT 2021ably - 2021-10-23 (T+8.6d) Image below (2021-10-23.168) was taken 8.6 days after discovery of 2021ably Position of reported transient (not visible) is close to galaxy centre Very poor quality image (bright sky background, low S/N) |
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| Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-23 04:11 UT (#926203-07) 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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| This Web Page: | CCD Images - Session 926 (2021-10-22) |
| Last Updated : | 2024-06-07 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
