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CCD Images - Session 905 (2021-08-13)
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AT2021urk - Extragalactic Nova in M31 AT2021vfg - Type CV Transient KIC 8462852 - Variable Star (Tabby's Star) AT2021uoa - Type CV Transient UGC 12188 - Spiral Galaxy with Type II Supernova 2021ucg Nova Cas 2021 - Nova (V1405 Cas) NGC 7767 - Spiral Galaxy with AT2021kni UGC 505 - Spiral Galaxy with Type Ia Supernova 2021ukt - Attempt to image NGC 514 failed (due to cloud) Variable Stars (photometric monitoring) - CI Cyg, S Cyg, SS Cyg, BL Lac
- Attempt to image Nova Per 2020 failed (due to cloud)Nearby Stars (astrometric monitoring) - 61 Cyg
- Night Session (3.5 hours). - Session finished early due to cloud - Main aims of the session were to acquire a selection of targets as conditions allowed - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 11.5°C (min) - CCD Temperature: -5°/-10°C - Notes from 2021-08-13 >> [ Local Files >> ] -
| M31 with AT2021urk (Andromeda) AT2021urk (Type: EGN) discovered 2021/07/26.874 UT by XOSS Alias: XM56MZ, Gaia21drr [ Rochester Supernova site - Novae | Gaia21drr ] Alerting Magnitude (Gaia) : +16.76 |
| M31 with AT2021urk - 2021-08-13 (T+18.1d) Image below (2021-08-13.938) was taken 18.1 days after discovery of 2021urk EGN shown by white cross-hairs |
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| Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-08-13 22:37 UT (#905004-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| M31 with AT2021urk - 2021-08-13 (T+18.1d) Image below (2021-08-13.938) was taken 18.1 days after discovery of 2021urk EGN shown by white cross-hairs |
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| Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-08-13 22:37 UT (#905004-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT2021urk on M31 Page >> |
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| AT2021vfg (Pegasus) AT2021vfg (Type: CV) discovered 2021/08/07.480 UT by ASAS-SN Alias: ASASSN-21pf ( Rochester Supernova site ) Discovery Mag +13.7, Outburst Amplitude 9 mag Matches to blue PS1 gmag. +22.8 source. CV Candidate but may be a nova |
| AT2021vfg - 2021-08-13 (T+6.5d) CV is shown by white cross hairs. |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-08-13 22:57 UT (#905011-15) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| AT2021vfg - 2021-08-13 (T+6.5d) Image below (2021-08-13.954) was taken 6.5 days after discovery of 2021vfg CV is shown by white cross hairs. Measured Magnitude +15.3 |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-08-13 22:57 UT (#905011-15) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT2021vfg on Type CV Transients Page >> |
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| KIC 8462852 / Tabby's Star (Cygnus) Alias: Boyajian's Star, WTF Star ("Where’s the Flux?") Distance 1470 ly. Magnitude +11.7 Star shows large irregular dimmings. KIC 8462852 shown by white cross-hairs Measured Mag +11.1 (V) (linked with Detection Threshold = 30) |
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| Annotated CCD Image (50% size, linear scale) 3 x 60s exposure (average combine), 3x3 binning, V Filter 2021-08-13 23:24 UT (#905040-42) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| KIC 8462852 - Earlier Image (2021-07-25) Measured Mag +11.71 (V) |
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| Annotated CCD Image (50% size, linear scale) 3 x 60s exposure (average combine), 3x3 binning, V Filter 2021-07-25 01:24 UT (#902129-31) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| KIC 8462852 - Earlier Image (2020-12-02) Measured Mag +11.94 (C), + 11.82 (V) |
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| Annotated CCD Image (50% size, linear scale, cropped) 4 x 30s exposure (average combine), 3x3 binning, C Filter 2020-12-02 21:38 UT (#837157-65) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| KIC 8462852 Links: AAVSO Info : https://www.aavso.org/category/tags/kic-8462852 Unofficial Page for Where's the Flux? Discovery Paper: 1509.03622.pdf (arxiv.org) |
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| AT2021uoa (Cygnus) AT2021uoa (Type: CV) discovered 2021/07/31.106 UT by Gaia Alias: Gaia21don ( Rochester Supernova site , Gaia21don) 0.3 mag rise in Gaia source, previous event in lightcurve Alerting magnitude +14.59 Historic magnitude +14.88 |
| AT2021uoa - 2021-08-13 (T+13.9d) CV is shown by white cross hairs. |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-08-13 23:59 UT (#905064-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| AT2021uoa - 2021-08-13 (T+13.9d) Image below (2021-08-13.997) was taken 13.9 days after discovery of 2021uoa CV is shown by white cross hairs. Measured Magnitude +14.2 (linked with Detection Threshold = 30) |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-08-13 23:59 UT (#905064-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT2021uoa on Type CV Transients Page >> |
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| UGC 12188 with SN2021ucg (Lacerta) SN 2021ucg (Type: II) discovered 2021/07/25.516 UT by ATLAS Alias: ATLAS21bchd Host Alias : PGC 69727 (catalog mag +14.4) (Rochester Supernova site | Odd Trondal image ) |
| UGC 12188 |
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| CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-08-14 00:30 UT (#905083-87) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| UGC 12188 with SN2021ucg - 2021-08-14 (T+19.5d) Image below (2021-08-14.015) was taken 19.5 days after discovery of 2021ucg SN show by white cross-hairs Measured magnitude +16.5 |
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| CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-08-14 00:30 UT (#905083-87) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2021ucg (UGC 12188) on Supernovae 2021 Page >> |
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| 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 - 2021-08-14 (T+148.6d) Image below (2021-08-14.030) was taken 148.6 days after discovery of Nova Nova is shown by white cross hairs. Measured magnitude +8.16 Note: star object is saturated and shows some blooming, mag is probably underestimated (linked with Detection Threshold = 50) |
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| CCD Image (100% size, linear scale, cropped) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2021-08-14 00:45 UT (#905091-95) 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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| NGC 7767 with AT2021kni (Pegasus) AT2021kni (Type: unk) discovered 2021/04/26.766 UT by Koichi Itagaki Alias: PSN J23505558+2705349, Gaia21cvt ( Rochester Supernova site | Discovery Image | Enrico Prosperi image | Gaia21cvt ) |
| NGC 7767 and adjacent galaxies (Part of Abell 2666) NGC 7767 (catalog mag +13.5), NGC 7768 (catalog mag +12.3), NGC 7765 (catalog mag +14.7), NGC 7766 (catalog mag +16.7), PGC 1800698 (catalog mag +17.1), PGC 1798869 (catalog mag +17.3) |
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| CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-08-14 01:05 UT (#905100-02) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 7767 with AT2021kni - 2021-08-14 (T+109.3d) Image below (2021-08-14.036) was taken 109.3 days after discovery of 2021kni Position of reported transient is shown by white circle. No clear definitive evidence of object at reported position. Transient AT2021kni has probably faded to below limiting magnitude of image (~ +18.0) Gaia observations (Gaia21cvt) on 2021-08-06 indicate that AT2021kni had faded to +19.74 |
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| CCD Image (150% size, square root scale, cropped) Image details as above |
| Images of AT2021kni (NGC 7767) on Supernovae 2021 Page >> |
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| UGC 505 with SN2021ukt (Cetus) SN 2021ukt (Type: Ia) discovered 2021/07/31.441 UT by ZTF Alias: ZTF21abpxquj, Gaia21dsv ( Rochester Supernova site | Stan Howerton image | Gaia21dsv ) |
| UGC 505 with SN2021ukt - 2021-08-14 (T+13.6d) |
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| CCD Image (50% size, square root scale) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-08-14 01:19 UT (#905106-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| UGC 505 with SN2021ukt - 2021-08-14 (T+13.6d) Image below (2021-08-14.052) was taken 13.6 days after discovery of 2021ukt SN position is shown by white cross-hairs. Measured magnitude +15.75 |
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| CCD Image (125% size, square root scale, cropped) Image details as above |
| Images of SN 2021ukt (UGC 505) on Supernovae 2021 Page >> |
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| This Web Page: | CCD Images - Session 905 (2021-08-13) |
| Last Updated : | 2022-01-08 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
