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CCD Images - Session 889 (2021-04-21)
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AT 2021hut - Galaxy with Type AGN Transient NGC 3310 - Spiral Galaxy (Herschel IV-60) with SN 2021gmj NGC 4165 - Spiral Galaxy with Type II Supernova 2021gno NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz NGC 5018 - Elliptical Galaxy with Type Ia Supernova 2021fxy Variable Stars (photometric monitoring) - None Nearby Stars (astrometric monitoring) - None
- Night session (2.4 hours) - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 4°C (min) - CCD Temperature: -20°C - Notes from 2021-04-21 >> [ Local Files >> ] -
| AT2021hut (Virgo) In 2MASX J13364424-0329521 (PGC 48045) AT2021hut (Type: AGN) discovered 2021/04/03.020 UT by GSNST Alias: GSNST-21bj ( Rochester Supernova site | TNS 2021hut ) |
| AT 2021hut - 2021-04-21 (T+18.9d) Image below (2021-04-21.958) was taken 18.9 days after discovery of 2021hut Position of earlier transient (distinct ?) is shown by white cross-hairs Measured Magnitude +15.46 (Nucleus + AGN, Clear Filter) |
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| Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-21 23:07 UT (#889013-16) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2021hut (in PGC 48045) on Transients 2021 Page >> |
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| NGC 3310 / Herschel IV-60 with SN2021gmj (Ursa Major) SN 2021gmj (Type: II) discovered 2021/03/20.320 UT by DLT40 Alias: ZTF21aaqgmjt, ATLAS21izq Discovery Magnitude 15.98 (r-Sloan Filter) ( Rochester Supernova site | Gianluca Masi image | TNS 2021gmj ) |
| NGC 3310 with SN 2021gmj - 2021-04-21 (T+32.6d) Image below (2021-04-21.943) was taken 32.6 days after discovery of 2021gmj Position of SN (faint) is indicated by white cross-hairs Estimated Magnitude +14.8 (Clear Filter) Target not centered due to a TheSky6 issue |
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| CCD Image (100% size, log scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-21 22:45 UT (#889005-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2021gmj (NGC 3310) on Supernovae 2021 Page >> |
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| NGC 4165 with SN2021gno (Virgo) SN 2021gno (Type: II) discovered 2021/03/20.235 UT by ZTF Alias: ZTF21aaqhhfu Discovery Magnitude 18.20 (r-ZTF Filter) ( Rochester Supernova site | Claudio Balcon image | Giancarlo Cortini image | TNS 2021gno ) |
| NGC 4165 with SN 2021gno - 2021-04-22 (T+32.8d) Image below (2021-04-22.003) was taken 32.8 days after discovery of 2021gno Position of SN (faint) is shown by white cross hairs Estimated Magnitude +17.7 (Clear Filter) Poor quality image (poor sky conditions) |
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| Annotated CCD Image (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-22 00:08 UT (#889031-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2021gno (NGC 4165) on Supernovae 2021 Page >> |
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| NGC 4227 with SN2021biz (Canes Venatici) SN 2021biz (Type: Ia) discovered 2021/01/29.543 UT by ATLAS Alias: ATLAS21dfz Discovery Magnitude 18.33 (orange-ATLAS Filter) ( Rochester Supernova site | Gianluca Masi image | Jean-Claude Merlin image | TNS 2021biz ) |
| NGC 4227 with SN 2021biz - 2021-04-22 (T+82.5d) Image below (2021-04-22.012) was taken 82.5 days after discovery of 2021biz Position of SN (faint) is shown by white cross hairs. Estimated Magnitude +17.8 (Clear Filter) |
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| Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-22 00:26 UT (#889034-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2021biz (NGC 4227) on Supernovae 2021 Page >> |
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| NGC 5018 with SN 2021fxy (Virgo) SN 2021fxy (Type: Ia) discovered 2021/03/17.725 UT by Koichi Itagaki Discovery Magnitude 16.9 (Clear Filter) vs Prior Non-Detection in DSS Image ( Rochester Supernova site | Discovery Image | Paolo Campaner image ) ( TNS 2021fxy ) |
| NGC 5018 with SN 2021fxy - 2021-04-21 (T+35.3d) Image below (2021-04-21.979) was taken 35.3 days after discovery of 2021fxy SN is indicated by white cross-hairs. Measured Magnitude + 14.65 (Clear Filter) |
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| Annotated CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-21 23:33 UT (#889021-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2021fxy (NGC 5018) on Supernovae 2021 Page >> |
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| This Web Page: | CCD Images - Session 889 (2021-04-21) |
| Last Updated : | 2024-07-10 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
