David's Astronomy Pages CCD Images - Session 946 (2021-12-29)

Images (S945)

Images Main

Home Page

Images (S946)

Objects

Session Notes

AT 2021xrf - Transient SN 2021win - Galaxy with Type Ia Supernova 2021win NGC 7446 - Elliptical Galaxy with Type Ia Supernova 2021agdd Nova Cas 2021 - Nova (V1405 Cas) 132P/Helin-Roman-Alu - Comet UGC 3855 - Spiral Galaxy with Type II Supernova 2021agco 67P/Churyumov-Gerasimenko - Comet AT 2021agdv - Variable Star Transient  (GSC 5966:2500) AT 2021afkg - Seyfert Galaxy with AGN Transient UGC 5341 - Spiral Galaxy (PGC 28700) NGC 3254 - Spiral Galaxy NGC 3310 - Spiral Galaxy (Herschel IV-60) with SN 2021gmj Hickson 81      Variable Stars (photometric monitoring) - BL Lac      Nearby Stars (astrometric monitoring) - 61 Cyg, Scholz's Star

- All night session 10.4 hours - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature:7°C (min) - CCD Temperature:  -15°/-20°C - Notes from 2021-12-29 >>    [ Local Files >> ]

AT 2021xrf - Transient

AT 2021xrf (Perseus) AT 2021xrf (Type: CV) discovered 2021-09-02.359 UT by Kumar Alias: GEOTS-2021-022 Discovery Mag +13.5  ( Rochester Supernova site | TNS 2021xrf )

AT 2021xrf - 2021-12-29 (T+118.5d) Image below (2021-12-29.883) was taken 118.5 days after discovery of 2021xrf Position of reported transient (not visible) is shown by white circle Transient is presumed to have faded to normal level

Annotated CCD Image  (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-29 21:16 UT (#946026-27) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021xrf on Transients 2021 Page >>

Back to Top

SN 2021win - Galaxy with Type Ia Supernova 2021win

SN 2021win (Taurus) Alias: In WISEA J050619.12+223047.4 SN 2021win (Type: Ia) discovered 2021-08-18.445 UT by ZTF Alias: ZTF21abuibjs, Gaia21dyd Magnitude at discovery ~ +16.4  (Rochester Supernova site | Gaia21dyd )

SN 2021win - 2021-12-29 (T+133.4d) Image below (2021-12-29.892) was taken 133.4 days after discovery of 2021win Position of reported SN is shown by white cross-hairs Host galaxy is faint but just visible. SN itself has probably faded and is no longer visible.

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-29 21:33 UT (#946030-34) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Back to Top

NGC 7446 - Elliptical Galaxy with Type Ia Supernova 2021agdd

NGC 7446 with SN 2021agdd (Andromeda) SN 2021agdd (Type: Ia) discovered 2021-12-07.152 UT by DLT40 Alias: DLT21ag  ( Rochester Supernova site | Discovery Image  )

NGC 7446 with SN 2021agdd - 2021-12-29 (T+22.8d) Image below (2021-12-29.907) was taken 22.8 days after discovery of 2021agdd SN is shown by white cross hairs.  Measured Magnitude ?? (unable to isolate centroid in CCDSoft)

Annotated CCD Image  (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-29 21:57 UT (#946038-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021agdd (NGC 7446) on Supernovae 2021 Page >>

Back to Top

Nova Cas 2021 - Nova (V1405 Cas)

Nova Cas 2021 (Cassiopeia) Nova in Cassiopeia discovered 2021-03-18.4236,  by Yuji Nakamura (Japan) Magnitude at discovery +9.6 (unfiltered CCD) AT 2021hkn (Type: Nova) reported by 2021/03/30.055 UT by Gaia Alias: Gaia21bpe, AT 2021hkn, V1405 Cas

Nova Cas 2021 / AT 2021hkn - 2021-12-29 (T+286.5d) Image below (2021-12-29.928) was taken 286.5 days after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +9.00 (linked with Detection Threshold = 30)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2021-12-29 22:18 UT (#946049-53) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Cas 2021 (V1405 Cas) Spectra - 2021-12-29 (T+286.5d)

Spectra produced in AstroMain using Image taken with Star Analyser 200 5 x 30s exposure (average combine), 2x2 binning, S Filter 2021-12-29 22:21 UT (#946054-58) 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 >>

Back to Top

132P/Helin-Roman-Alu - Comet

132P/Helin-Roman-Alu (passing through Cetus) Sun Distance 1.75 AU (receeding) Earth Distance 1.22 AU (183.2 million km)		132P/Helin-Roman-Alu - 2021-12-29, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 66.53 arcsec/hr, Dec 28.59 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, C Filter 2021-12-29 22:32 UT (#946062-64) 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) 7 x 60s exposure (average combine), 3x3 binning, C Filter 2021-12-29 22:35 UT (#946062-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 132P/Helin-Roman-Alu on Comets 2021 Page >>

Back to Top

UGC 3855 - Spiral Galaxy with Type II Supernova 2021agco

UGC 3855 with SN 2021agco (Lynx) SN 2021agco (Type: II) discovered 2021-12-05.564 UT by XOSS Alias: PSP21al  ( Rochester Supernova site | Andrea Mantero image | Jordi Camarasa image)

UGC 3855 with SN 2021agco - 2021-12-29 (T+24.4d) Image below (2021-12-29.964) was taken 24.4 days after discovery of 2021agco Position of reported SN (very faint or not visible) is shown by white cross-hairs

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-29 23:17 UT (#946079-83) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021agco (UGC 3855) on Supernovae 2021 Page >>

Back to Top

67P/Churyumov-Gerasimenko - Comet

67P/Churyumov-Gerasimenko (passing through Cancer) Sun Distance 1.41 AU (receeding) Earth Distance 0.47 AU (71.0 million km)		67P/Churyumov-Gerasimenko - 2021-12-30, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -19.52 arcsec/hr, Dec 8.91 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 45s exposure (single frame), 3x3 binning, C Filter 2021-12-30 01:25 UT (#946111) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, log scale, cropped) 45s exposure (single frame), 3x3 binning, C Filter 2021-12-30 01:25 UT (#946111) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 67P/Churyumov-Gerasimenko on Comets 2021 Page >>

Back to Top

AT 2021agdv - Variable Star Transient  (GSC 5966:2500)

AT 2021agdv in 2MASS J09361749+0918146 (Canis Major) AT 2021agdv (Type: Star, class unknown ) discovered 2021-12-07.784 UT by Gaia Alias: Gaia21fly, GSC 5966:2500 Alert triggered at magnitude +11.24 (vs Historic magnitiude +11.55)  ( Rochester Supernova site | Gaia21fly

AT 2021agdv - 2021-12-30 (T+22.3d) Image below (2021-12-30.065) was taken 22.3 days after discovery of 2021agdv Measured magnitude +11.25 (brightening again ?) (vs previous measurement +11.3,  2021-12-17) (vs previous measurement +11.45,  2021-12-28) (vs catalog mag +11.4)

Annotated CCD Image  (100% size,  linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, C Filter 2021-12-30 01:36 UT (#946116-19) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Back to Top

AT 2021afkg - Seyfert Galaxy with AGN Transient

AT 2021afkg (Leo) Alias: In 2MASS J09361749+0918146 AT 2021afkg (Type: AGN) discovered 2021-11-23.760 UT by Gaia Alias: Gaia21fhb  ( Rochester Supernova site | Gaia21fhb

AT 2021afkg - 2021-12-30 (T+36.3d) Image below (2021-12-30.072) was taken 36.3 days after discovery of 2021afkg Galaxy with AGN is shown by white cross-hairs Poor quality image (poor sky transparency)

Annotated CCD Image  (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-30 01:53 UT (#946122-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2021afkg (2MASS J09361749+0918146) on Transients 2021 Page >>

Back to Top

UGC 5341 - Spiral Galaxy (PGC 28700)

UGC 5341 (Leo) Flat Galaxy Atlas Object Alias: PGC 28700 [ Flat Galaxies ]

CCD Image (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-13 00:51 UT (#849080-82) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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

UGC 5341 -  Earlier Image (Jan 2021)

CCD Image (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-01-13 00:51 UT (#849080-82) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Back to Top

NGC 3254 - Spiral Galaxy

NGC 3254 (Leo Minor) Deep Sky Challenge, May 2020, Member of LGG 197 [ Deep Sky Challanges (Ast.Now) ]

Annotated CCD Image (50% size, square root scale) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-30 02:38 UT (#946140-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3254 - Detail

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

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

NGC 3254 with SN 2019np - Earlier Image 2019-01-29 Image below (2019-01-29.058) was taken 19.4 days after discovery (SN discovered 2019/01/09.665 by Koichi Itagaki) SN is shown  by white cross-hairs. Estimated magnitude +13.3

Annotated CCD Image (100% size, cropped) 4 x 120s exposure (average combine), 3x3 binning, C Filter 2019-01-29 01:24 UT (#651248-52) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2019np (NGC 3254) on Supernovae 2019 Page >>

Back to Top

NGC 3310 - Spiral Galaxy  (Herschel IV-60) with Type II Supernova 2021gmj

NGC 3310 / Herschel IV-60 with SN 2021gmj (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 - 2021-12-30 (T+284.8d) Image below (2021-12-30.115) was taken 284.8 days after discovery of 2021gmj Position of earlier SN (no longer visible) is indicated by white cross-hairs

CCD Image (100% size, log scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-30 02:53 UT (#946145-47) 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 >>

Back to Top

Hickson 81 - Galaxy Cluster (UGC 10319 et al)

Hickson 81 (Andromeda)  [ Hickson Galaxy Groups ]

Annotated CCD Image (50% size, square root scale) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-30 06:29 UT (#946171-74) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Hickson 81 - Detail

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

Hickson 81 - Eariler Image (Sep 2018) NB. Image suffers from star trailing due to poor/absent guiding

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2018-09-09 00:10 UT (#627133-37) 12" LX200R  (at f/10.4) + ST-10XME

Back to Top