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CCD Images - Session 883 (2021-04-12)
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Objects Session Notes
Nova Cas 2021 - Nova (V1405 Cas) TBA NGC 3310 - Spiral Galaxy (Herschel IV-60) with SN 2021gmj NGC 4165 - Spiral Galaxy with Type II Supernova 2021gno Nova Per 2020 - Nova (V1112 Per, AT2020abap) NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz NGC 3384 - Elliptical Galaxy NGC 4281 - Spiral Galaxy (Herschel II-573) M61 - Spiral Galaxy with Type II Supernova 2020jfo Variable Stars (photometric monitoring) - None Nearby Stars (astrometric monitoring) - 61 Cyg
- Night session (5.6 hours) - Main aims of the session were to acquire a selection of variable star, nearby star and comet targets and deep sky targets as cloud allowed - Poor quality skies - 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 2021-04-12 >> [ Local Files >> ] -
| 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 - 2021-04-13 (T+25.7d) Image below (2021-04-13.105) was taken 25.7 days after after discovery of Nova Nova is shown by white cross hairs. Measured magnitude +8.49 Note: star object is saturated and shows significant blooming, mag is likely to be underestimated (linked with Detection Threshold = 50) |
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| CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-13 02:41 UT (#883157-61) 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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| NGC 3310 / Herschel IV-60 with SN2021gmj (Ursa Major) SN 2021gmj (Type: II) discovered 2021/03/20.320 UT by DLT40 Alias: ZTF21aaqgmjt, ATLAS21izq ( Rochester Supernova site | Gianluca Masi image) |
| NGC 3310 with SN 2021gmj - 2021-04-12 (T+23.6d) Image below (2021-04-12.875) was taken 23.6 days after discovery of 2021gmj SN position indicated by white cross-hairs |
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| CCD Image (100% size, log scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-12 21:08 UT (#883005-08) 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 ( Rochester Supernova site | Claudio Balcon image | Giancarlo Cortini image ) |
| NGC 4165 with SN 2021gno - 2021-04-12 (T+23.7d) Image below (2021-04-12.888) was taken 23.7 days after discovery of 2021gno SN is shown by white cross hairs. Measured Magnitude +17.28 |
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| Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-12 21:27 UT (#883012-15) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 4165 with SN 2021gno - Wider View Showing 2 satellites crossing image in 12 minutes (total exposure) |
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| Annotated CCD Image (50% size, square root scale) Image details as above |
| Images of SN 2021gno (NGC 4165) on Supernovae 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 - 2021-04-12 (T+138.1d) Image below (2021-04-12.901) was taken 138.1 days after discovery of nova Nova is shown by white cross hairs. Measured magnitude +14.3 (turning/fading?) |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2021-04-12 21:43 UT (#883017-21) 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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| NGC 4227 with SN2021biz (Canes Venatici) SN 2021biz (Type: Ia) discovered 2021/01/29.543 UT by ATLAS Alias: ATLAS21dfz (Rochester Supernova site | Gianluca Masi image | Jean-Claude Merlin image ) |
| NGC 4227 with SN 2021biz - 2021-04-12 (T+73.4d) Image below (2021-04-12.913) was taken 73.4 days after discovery of 2021biz SN shown by white cross hairs. Measured magnitude ? |
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| Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-12 22:04 UT (#883025-29) 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 3384 (Leo)
Image quality badly affected by light artefact ( IR light leakage into Camera from led lights on Observatory WebCam) |
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Annotated CCD Image (50% size, log scale) |
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Annotated CCD Image (100% size, log scale, cropped) |
| NGC 3384 - Earlier Image (2010) |
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CCD Image (cropped) |
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| NGC 4281 / Herschel II-573 (Virgo) NGC 4281 (catalog mag +11.4) with adjacent galaxies : NGC 4273 (catalog mag 11.7), NGC 4277 (catalog mag +15.0), NGC 4270 (catalog mag 13.1) |
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| Annotated CCD Image (50% size, log scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-12 23:00 UT (#883059-63) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 4281 - Detail |
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| CCD Image (100% size, log scale, cropped) Image details as above |
| NGC 4281 - Earlier Images (2020) |
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| CCD Image (100% size, log scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2020-04-21 22:38 UT (#771048) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| M61 (Virgo) |
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| Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-12 23:23 UT (#883067-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| M61 (Virgo) |
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| CCD Image (100% size, square root scale, cropped) Image details as above |
| M61 with AT2021ilb (Virgo) AT2021ilb (Type: unconf) discovered 2021/04/05.815 UT by Lorenzo Siciliano |
| M61 with AT2021ilb (Attempt) - 2021-04-12 (T+7.2d) Image below (2021-04-12.967) was taken 7.2 days after discovery of 2021ilb Position of reported transient (not visible) is indicated by white cross-hairs |
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| Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-04-12 23:23 UT (#883067-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| M61, SN2020jfo follow-up (Virgo) SN2020jfo (Type II) discovered 2020/05/06.203 by Zwicky Transient Facility (ZTF)) (Rochester Supernova site | Nico Montigiani and Massimiliano Mannucci image | SN 2020jfo images sub page | |
| M61 with SN 2020jfo - 2021-04-12 (T+341.8d) Image below (2021-04-12.967) was taken 341.8 days after discovery of SN 2020jfo SN is no longer visible |
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| Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-11-28 04:58 UT (#835292-96) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| M61 with SN2020jfo - Earlier Image, 2020-05-13 (T+7.8d) Image below (2020-05-13.992) was taken 7.8 days after discovery of SN 2020jfo SN is shown by white cross hairs. Measured SN magnitude +14.4 |
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| Annotated CCD Image (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2020-05-13 23:49 UT (#782012-14) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2020jfo (M61) on Supernovae 2020 Page >> |
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| This Web Page: | CCD Images - Session 883 (2021-04-12) |
| Last Updated : | 2022-07-05 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
