David's Astronomy Pages CCD Images - Session 869 (2021-03-13)

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Images (S870)

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Session Notes

NGC 304 - Spiral Galaxy with Type Ia Supernova 2021dnn AT 2021fbz - Extragalactic Nova in M31 (Attempt) UGC 1436 - Spiral Galaxy with Type Ia Supernova 2021nv Nova Per 2020 - Nova (V1112 Per, AT 2020abap) AT 2021ckv - Type YSO Transient  (GCVS PR Ori) AT 2021bxp - Type CV Transient (faded) NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz UGC 5829 - Irregular Galaxy with LBV Transient AT 2021blu NGC 4631 - Spiral Galaxy with Type LRN Transient AT 2021biy SN 2021xn - Type Ia Supernova in PGC 6041 AT 2021dbp - Type CV Transient UGC 3502 - Spiral Galaxy with Type Ia Supernova 2021cwc NGC 3619 - Spiral Galaxy (H I-244) UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq NGC 4041 - Spiral Galaxy (H I-252) with AT 2021cek  (Unconfirmed) M58 - Spiral Galaxy (NGC 4579) (with Light Artefact) NGC 4941 - Spiral Galaxy (UGCA 321) AT 2021dtd - Type CV Transient UGCA 305 - Irregular Galaxy (PGC 43786) UGC 10310 - Spiral Galaxy (ARP 2) IC 992 - Spiral Galaxy with Type Ic Supernova 2021dwg 7P/Pons-Winnecke - Comet (Attempt)     Variable Stars (photometric monitoring) - SY Cnc, R CrB, RZ LMi, BL Lac, CY Lyr     Nearby Stars (astrometric monitoring) - Barnards Star

- All Night session (8.9 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/showers allowed and to test stability in AstroMain 3.38/3.38.2. - Session cut short by development of cloud which lasted until dawn. - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 2°C (min) - CCD Temperature:  -15°/20°C - Notes from 2021-03-13 >>    [ Local Files >> ]   -

NGC 304 - Spiral Galaxy with Type Ia Supernova 2021dnn

NGC 304 with SN 2021dnn (Andromeda) [ Supernovae 2021 ] SN 2021dnn (Type: Ia) discovered 2021/02/22.225 UT by ATLAS Magnitude +18.3 at discovery Alias: ZTF21aabpszb, Gaia21adm  (Rochester Supernova site | TNS | )

NGC 304 with SN 2021dnn - 2021-03-13 (T+19.6d) Image below (2021-03-13.839) was taken 19.6 days after discovery of 2021dnn SN position is shown by white circle. No object is visible at SN's reported position (white circle) (image is single frame taken under poor sky conditions with wind & poor seeing)

Annotated CCD Image  (150% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-13 20:13 UT (#869003-04) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021dnn (NGC 304) on Supernovae 2021 Page >>

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AT 2021fbz - Extragalactic Nova in M31 (Attempt)

M31 with Nova 2021fbz (Andromeda) AT 2021fbz (Type: EGN) discovered 2021/03/08.397 UT by Koichi Itagaki Alias: PNV J00434013+4127123, XN03JR Discovery Magnitude 16.5  (Rochester Supernova site | TNS 2021fbz | Discovery Image )

M31 with Nova 2021fbz - 2021-03-13 (T+5.5d) Image below (2021-03-13.857) was taken 5.5 days after discovery of 2021fbzj Transient's reported position is shown by white circle. No indication of any object at the reported position. Nova is unconfirmed

Annotated CCD Image  (100% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-13 20:43 UT (#869011-15) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of EGN 2021fbz (M31) on Transients 2021 Page >>

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UGC 1436 - Spiral Galaxy with Type Ia Supernova 2021nv

UGC 1436 with SN 2021nv (Aries) [ Supernovae 2021 ] SN 2021nv (Type: Ia) discovered 2021/01/07.263 UT by ATLAS Magnitude +17.8 at discovery Alias: ATLAS21aqr  (Rochester Supernova site | Claudio Balcon image | )

UGC 1436 with SN 2021nv - 2021-03-13 (T+65.6d) Image below (2021-03-13.873) was taken 65.6 days after discovery of 2021nv SN not visible (poor sky conditions & SN fading)

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-13 21:07 UT (#869019-23) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021nv (UGC 1436) on Supernovae 2021 Page >>

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Nova Per 2020 - Nova (V1112 Per, AT 2020abap)

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 AT 2020abap (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 - 2021-03-13 (T+108.1d) Image below (2021-03-13.888) was taken 108.1 days after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +14.94

CCD Image (100% size, linear scale, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2021-03-13 21:23 UT (#869026-30) 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 2021ckv - Type YSO Transient  (GCVS PR Ori)

AT 2021ckv / PR Ori  (Orion) AT 2021ckv (Type: YSO) discovered 2021/02/08.759 UT by Gaia Alias: Gaia21arx, GCVS PR Ori [ Gaia21arx ]  [ YSO Transients ]

AT 2021ckv - 2021-03-13 (T+33.1d) Image below (2021-03-13.897) was taken 33.1 days after discovery of 2021ckv Position of reported YSO Type Transient is shown by white cross-hairs. Measured Magnitude +10.86 (vs normal range of +12.2 to +13.6) Poor quality image (bright sky & thin cloud)

Annotated CCD Image  (50% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-13 21:41 UT (#869034-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021ckv (PR Ori) on Transients 2021 Page >>

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AT 2021bxp - Type CV Transient

AT 2021bxp (Leo Minor) AT 2021bxp (Type: CV) discovered 2021/02/05.909 UT by XOSS Alias: XM51HT, TCP J10203579+3103424, ZTF21aaherhg  ( Rochester Supernova site )

AT 2021bxp - 2021-03-13 (T+36.0d) Image below (2021-03-13.917) was taken 36.0 days after discovery of 2021bxp CV (faint) is shown by white cross-hairs.

Annotated CCD Image  (50% size, linear scale) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-03-13 22:05 UT (#869048-52) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2021bxp - Negative Image (T+36.0d) CV (faint) is shown by black cross-hairs.

Annotated negative CCD Image (100% size, square root scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-03-13 22:05 UT (#869048-52) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021bxp on Type CV Transients Page >>

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NGC 4227 - Spiral Galaxy with Type Ia Supernova 2021biz

NGC 4227 with SN 2021biz (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 - 2021-03-13 (T+43.4d) Image below (2021-03-13.926) was taken 43.4 days after discovery of 2021biz SN shown by white cross hairs.  Measured magnitude +16.58

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-13 22:23 UT (#869057-61) 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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UGC 5829 - Irregular Galaxy (Spider Galaxy) with Type LBV Transient AT 2021blu

UGC 5829 with LBV 2021blu (Leo Minor) AT 2021blu (Type: LBV) discovered 2021/02/01.467 UT by ATLAS Alias: ATLAS21dic, ZTF21aagppzg  [ Irregular Galaxies ]

UGC 5829 with LBV 2021blu - 2021-03-13 (T+40.5d) Image below (2021-03-13.949) was taken 40.5 days after discovery of 2021blu LBV is indicated by white cross-hairs. Measured magnitude +17.71

Annotated CCD Image  (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-13 22:56 UT (#869071-75) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of LBV 2021blu  (UGC 5829) on Transients 2021 Page >>

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NGC 4631 - Spiral Galaxy with Type LRN Transient AT 2021biy

NGC 4631 with AT 2021biy (Canes Venatici) AT 2021biy (Type: LRN) discovered 2021/01/29.559 UT by ATLAS Alias: ATLAS21dfy (Discovery Note)  (Rochester Supernova site | Odd Trondal image | Nick James image ) LRN = Luminous Red Nova [ LRN Transients ]

NGC 4631 with AT 2021biy - 2021-03-13 (T+43.4d) Image below (2021-03-13.964) was taken 43.4 days after discovery of 2021biy LRN (very faint) is shown by white cross hairs.

Annotated CCD Image  (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-13 23:14 UT (#869078-80) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021biy (NGC 4631) on Transients 2021 Page >>

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SN 2021xn - Type Ia Supernova in PGC 6041

SN 2021xn (Perseus) Faint Galaxy (PGC 6041, SDSS J013751.16+533958.8, catalog mag +16.1) with Type Ia Supernova [ Supernovae ] SN 2021xn (Type: Ia) discovered 2021/01/10.158 UT by ZTF Alias: ZTF21aacvhsc  (Rochester Supernova site | Claudio Balcon image  )

SN 2021xn - 2021-03-13 (T+62.8d) Image below (2021-03-13.980) was taken 62.8 days after discovery of 2021xn SN 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 2021-03-13 23:41 UT (#869085-89) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021xn (PGC 6041) on Supernovae 2021 Page >>

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AT 2021dbp - Type CV Transient

AT 2021dbp (Auriga) AT 2021dbp (Type: CV) discovered 2021/02/14.535 UT by Gaia Alias: Gaia21auv,  GSC 2374:280  ( Rochester Supernova site |  Gaia21auv ) Based on Gaia Alert at magnitude +10.04

AT 2021dbp - 2021-03-13 (T+27.5d) Image below (2021-03-13.996) was taken 27.5 days after discovery of 2021dbp CV is shown by white cross hairs.  Measured Magnitude +10.57

Annotated CCD Image  (100% size, linear scale, cropped) 60s exposure (single frame), 3x3 binning, C Filter 2021-03-13 23:55 UT (#869094) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021dbp on Transients 2021 Page >>

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UGC 3502 - Spiral Galaxy with Type Ia Supernova 2021cwc

UGC 3502 with SN 2021cwc (Camelopardalis) SN 2021cwc (Type Ia, z=0.021) discovered 2021/02/13.381 UT by ATLAS Alias: ATLAS21flz  ( Rochester Supernova site |  Giancarlo Cortini image | Odd Trondal image )

UGC 3502 with SN 2021cwc - 2021-03-14 (T+28.6d) Image below (2021-03-14.003) was taken 28.6 days after discovery of 2021cwc SN 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 2021-03-14 00:14 UT (#869102-05) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021cwc (UGC 3502) on Supernovae 2021 Page >>

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NGC 3619 - Spiral Galaxy (H I-244)

NGC 3619 (Ursa Major) Alias: Herschel I-244 [ Herschel 400 Objects ]

NGC 3619  & adjacent galaxies NGC 2903 (catalog mag +11.5 or +12.5) PGC 34661 (catalog mag +16.3) PGC 34592 (catalog mag ?)  PGC 2570887  (catalog mag +17.5)

CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-14 00:37 UT (#869109-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3619 /  H I-244 - Detail

CCD Image  (100% size, square root scale, cropped) Image details as above

CCD Image  (100% size, log scale, cropped) Image details as above

Negative CCD Image (100% size, log scale, cropped) Image details as above

False Colour CCD Image  (100% size, log scale, cropped) Inverse Spectrum Image details as above

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UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq

UGC 6930 with SN 2020rcq (Ursa Major) Spiral Galaxy with Type Ia Supernova [ Supernovae ] SN 2020rcq (Type 1a, z=0.002597) discovered 2020/08/09.168 by Zwicky Transient Facility (ZTF)  (Rochester Supernova site | Giancarlo Cortini image | )

UGC 6930 with SN 2020rcq - 2021-03-14 (T+216.9d) Image below (2021-03-14.035) was taken 216.9 days after discovery of 2020rcq SN is shown by white cross hairs.  Measured SN magnitude +16.97 (fading)

Annotated CCD Image (100% size, square root scale, cropped) 5 x 120s exposure (average combine), 3x3 binning, C Filter 2021-03-14 00:56 UT (#869117-21) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020rcq (UGC 6930) on Supernovae 2020 Page >>

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NGC 4041 - Spiral Galaxy (H I-252) with Transient AT 2021cek (Unconfirmed)

NGC 4041 with AT 2021cek (Ursa Major) AT 2021cek (Type: unconf) discovered 2021/02/06.501 UT by Akihiro Nakayama Discovery magnitude 16.5  (Rochester Supernova site | TNS 2021cek )

NGC 4041 with AT 2021cek - 2021-03-14 (T+35.5d) Image below (2021-03-14.046) was taken 35.5 days after discovery of 2021cek Position of reported transient (not visible) is shown by white cross-hairs Transient is unconfirmed.

CCD Image  (100% size, log scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-14 01:14 UT (#869124-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021cek (NGC 4041) on Transients 2021 Page >>

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M58 - Spiral Galaxy (NGC 4579) - with Light Artefact

M58 (Virgo) Alias: NGC 4579 [ Messier Objects  ] Image below badly spoilt by bright artefact from IR light from Observatory Web Cam (ObsCam)

Annotated CCD Image (50% size, linear scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-14 01:39 UT (#869133-37) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M58 - Earlier Image (2007)

CCD Image (100% size, linear scale) 3 x 180 sec exposure (average combine), 2x2 binning, C Filter  2007-05-19 23:43h UT (#198299-301) 8" LX200 classic + ST-7e

M58 - Later Image (Dec 2022)

See Later image of M58 (taken 2022-12-27)

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NGC 4941 - Spiral Galaxy (UGCA 321)

NGC 4941 (Virgo) Alias: UGCA 321 Catalog mag +11.2 or +12.0  [ UGCA Galaxies ]  Other galaxies in FOV :  PGC 117401 (catalog mag +17.6)

Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-14 02:02 UT (#869141-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4941 - Detail

CCD Image (100% size, square root scale, cropped) Image details as above

Annotated negative CCD Image (100% size, square root scale, cropped) Image details as above

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AT 2021dtd - Type CV Transient, Be-type event

AT 2021dtd (Cepheus) AT 2021dtd (Type: CV) discovered 2021/02/20.084 UT by Gaia Alias: Gaia21bal,   GSC 2374:280  ( Rochester Supernova site | Gaia21bal ) 0.25 mag brightening in blue star, Be-type event

AT 2021dtd - 2021-03-14 (T+22.0d) Image below (2021-03-14.092) was taken 22.0 days after discovery of 2021dtd CV is shown by white cross hairs.   Measured Magnitude +10.92

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-14 02:22 UT (#869149-53) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021dtd on Transients 2021 Page >>

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UGCA 305 - Irregular Galaxy (PGC 43786)

UGCA 305 (Virgo) Alias: PGC 43786 Catalog mag +17.4  [ UGCA Galaxies ] [ Irregular Galaxies ] Other galaxies in FOV :  PGC 170212 (catalog mag +15.4),  PGC 1051440 (catalog +17.8) PGC 1050888 (catalog mag +18.1), PGC 1050657 (catalog mag +18.2)

Annotated CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-14 02:57 UT (#869162-66) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 305 - Detail UGC 305 with very low surface brightness

Annotated CCD Image (150% size, square root scale, cropped) Image details as above

Annotated negative CCD Image (150% size, square root scale, cropped) Image details as above

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UGC 10310 - Spiral Galaxy  (ARP 2)

UGC 10310 (Hercules) Aliases  ARP 2 ,  PGC 57678 [ ARP Galaxies ]

Annotated CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-14 03:28 UT (#869179-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 10310 - Detail

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

Annotated negative CCD Image (125% size, square root scale, cropped) Image details as above

UGC 10310 - Earlier Detail (Feb 2019) Bright star on right hand side of image is GSC 3492:121 (+10.6 mag)

CCD Image (100% size, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2019-02-06 06:21 UT (#658004-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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IC 992 - Spiral Galaxy with Type Ic Supernova 2021dwg

IC 992 with SN 2021dwg (Virgo) SN 2021dwg (Type: Ic) discovered 2021/02/27.420 UT by ZTF Alias: ZTF21aannoix Magnitude +18.44 at discovery  ( Rochester Supernova site | TNS 2021dwg )

IC 992 with SN 2021dwg - 2021-03-14 (T+14.7d) Image below (2021-03-14.169) was taken 14.7 days after discovery of 2021dwg Position of SN (distinct) is shown by white cross-hairs Measured magnitude +17.46

Annotated CCD Image  (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-14 04:09 UT (#869185-86) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021dwg (IC 992) on Supernovae 2021 Page >>

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7P/Pons-Winnecke - Comet (Attempted Observation)

7P/Pons-Winnecke (passing through Ophiuchus) Sun Distance 1.52 AU (approaching) Earth Distance 0.99 AU (148.5 million km) Expected position of comet shown by white circle Poor quality image (uneven background due to passing cloud)		7P/Pons-Winnecke - 2021-03-14, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 106.01 arcsec/hr, Dec -1.88 arcsec/hr) Comet position is indicated by white circle. Poor quality image (uneven background)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-03-14 04:37 UT (#869190-92) 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 45s exposure (average combine), 3x3 binning, C Filter 2021-03-14 04:39 UT (#869190-97) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 7P/Pons-Winnecke on Comets 2021 Page >>

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