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67P/Churyumov-Gerasimenko (passing through Cancer) Sun Distance 1.33 AU (receeding) Earth Distance 0.45 AU (66.7 million km) |
67P/Churyumov-Gerasimenko - 2021-12-17, Detail Comet's rate of motion (Ra 107.75 arcsec/hr, Dec 2.12 arcsec/hr) |
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Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-12-17 01:04 UT (#942211-13) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
Annotated CCD Image (100% size, log scale, cropped) 12 x 45s exposure (average combine), 3x3 binning, C Filter 2021-12-17 01:09 UT (#942211-24) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
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Images of 67P/Churyumov-Gerasimenko on Comets 2021 Page >> |
67P/Churyumov-Gerasimenko - False Colour Image(s) Inverse Spectrum |
67P/Churyumov-Gerasimenko - 2021-12-17 |
False Colour CCD Image (70% size, log scale) 12 x 45s exposure (average combine), 3x3 binning, C Filter 2021-12-17 01:09 UT (#942211-24) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
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132P/Helin-Roman-Alu (passing through Cetus) Sun Distance 1.72 AU (receeding) Earth Distance 1.10 AU (163.9 million km) |
132P/Helin-Roman-Alu - 2021-12-16, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 59.42 arcsec/hr, Dec 25.30 arcsec/hr) |
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Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, C Filter 2021-12-16 19:26 UT (#942008-10) 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) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2021-12-16 19:23 UT (#942004-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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Images of 132P/Helin-Roman-Alu on Comets 2021 Page >> |
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C/2019 L3 (ATLAS) (passing through Auriga) Sun Distance 3.56 AU (approaching) Earth Distance 2.65 AU (397.0 million km) |
C/2019 L3 (ATLAS) - 2021-12-17, Detail Comet's rate of motion (Ra -34.66 arcsec/hr, Dec -22.22 arcsec/hr) |
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Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-12-17 00:55 UT (#942206-08) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
CCD Image (100% size, log scale, cropped) 8 x 45s exposure (average combine), 3x3 binning, C Filter 2021-12-17 00:53 UT (#942200-08) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
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Images of C/2019 L3 (ATLAS) on Comets 2021 Page >> |
C/2019 L3 (ATLAS) Inverse Spectrum |
C/2019 L3 (ATLAS) - 2021-12-17 |
False Colour CCD Image (70% size, log scale) 8 x 45s exposure (average combine), 3x3 binning, C Filter 2021-12-17 00:53 UT (#942200-08) 12" LX200R (at f/10.4) + ST-10XME Non-Guided |
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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 / AT 2021hkn - 2021-12-16 (T+273.4d) Image below (2021-12-16.863) was taken 273.4 days after discovery of Nova Nova is shown by white cross hairs. Measured magnitude +9.06 (linked with Detection Threshold = 50 |
Annotated CCD Image (100% size, linear scale, cropped) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2021-12-16 20:43 UT (#942057-61) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Nova Cas 2021 (V1405 Cas) Spectra - 2021-12-16 (T+273.4d) |
Spectra produced in AstroMain using Image taken with Star Analyser
200 5 x 30s exposure (average combine), 2x2 binning, S Filter 2021-12-16 20:47 UT (#942062-66) 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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AT 2021rl (Ursa Major) BL Type Transient, QSO 0954+658, 6C 095456+654857 AT 2021rl (Type: BL) discovered 2021/01/06.449 UT by Gaia Alias: Gaia21acz Triggering Magnitude 14.21 (vs Historic Magnitude 15.57) ( Gaia21acz ) |
AT 2021rl - 2021-12-17 (T+344.7d) Image below (2021-12-17.124) was taken 344.7 days after discovery of 2021rl BL Type object shown by white cross hairs. Measured magnitude +15.1 (vs catalog mag of +15.5) |
Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-17 03:08 UT (#942276-80) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
Images of AT 2021rl (QSO 0954+658) on Transients 2021 Page >> |
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AT 2021xbh (Camelopardalis) AT 2021xbh (Type: Nova?) discovered 2021-08-27.873 UT by XOSS Alias: KATS21Q001 ( Rochester Supernova site | KATS21Q001 Image ) |
Annotated CCD Image (50% size, linear scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-16 22:35 UT (#942117-21) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
AT 2021xbh - Detail, 2021-12-16 (T+111.1d) Image below (2021-12-16.935) was taken 111.1 days after discovery of 2021xbh Position of earlier transient (no longer visible) is shown by white circle |
Annotated CCD Image (100% size, linear scale, cropped) Image details as above |
Images of AT 2021xbh on Transients 2021 Page >> |
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AT 2021aena (Corvus) AT 2021aena (Type: CV) discovered 2021-11-11.846 UT by Gaia Alias: Gaia21fdi Transient alert triggered at magnitude +14.56 (vs historic magnitiude +17.51) ( Rochester Supernova site | Gaia21fdi ) |
Annotated CCD Image (50% size, linear scale) 4 x 60s exposure (average combine), 3x3 binning, C Filter 2021-12-17 06:11 UT (#942351-55) 12" LX200R (at f/10.4) + ST-10XME Unguided |
AT 2021aena - 2021-12-17 (T+35.4d) Image below (2021-12-17.255) was taken 35.4 days after discovery of 2021aena Reported position of transient (not visible) is shown by white circle Star has most-likely faded back to its usual brightness +17.5 |
Annotated CCD Image (100% size, linear scale, cropped) Image details as above Unguided |
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AT 2021agdv (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 ) |
Annotated CCD Image (50% size, linear scale) 4 x 60s exposure (average combine), 3x3 binning, C Filter 2021-12-17 01:45 UT (#942235-39) 12" LX200R (at f/10.4) + ST-10XME Unguided |
AT 2021agdv - 2021-12-17 (T+9.3d) Image below (2021-12-17.071) was taken 9.3 days after discovery of 2021agdv Measured magnitude +11.3 (vs catalog mag +11.4) |
Annotated CCD Image (100% size, linear scale, cropped) Image details as above Unguided |
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IC 719 with SN 2021kos (Virgo) IC 791 contained earlier SN 2021kos (Type: Ib) discovered 2021/04/19.226 UT by ZTF Alias: ZTF21aawmdxw, Gaia21ccl Gaia Alert triggered at mag +18.14 ( Rochester Supernova site | Gaia21ccl ) |
IC 719 - Spiral Galaxy Image below (2021-12-17.208) was taken 242.0 days after discovery of 2021kos The SN is no longer visible Poor quality image , image was unguided due to a PHD2 problem Target to be rescheduled for a later session |
CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-17 05:09 UT (#942328-32) 12" LX200R (at f/10.4) + ST-10XME Non-Guided |
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NGC 1400 (Eridanus) SN 2021hcz (Type: Ia) discovered 2021/03/24.984 UT by Gaia Alerting magnitude +15.43 Alias: Gaia21bmx ( Rochester Supernova site | Discovery Image ) |
Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-16 21:36 UT (#942097-101) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
NGC 1400 - Detail Image below (2021-12-16.893) was taken 266.9 days after discovery of SN 2021hcz Transient is no longer visible Poor quality image due to bright moonlight |
CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-16 21:36 UT (#942097-101) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Images of SN 2021hcz (NGC 1400) on Supernova 2021 Page >> |
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NGC 2955 (Leo Minor) SN 2021jtt (Type: SN) discovered 2021/04/15.199 UT by ZTF Alias: ZTF21aavoqpl ( Rochester Supernova site | Manfred Mrotzek image w/SN 2021jtt ) |
Annotated CCD Image (50% size, square root scale) 180s exposure (single frame), 3x3 binning, C Filter 2021-12-17 01:23 UT (#942227) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
NGC 2955 - Detail Image below (2021-12-17.056) was taken 245.9 days after discovery of SN 2021jtt Position of earlier SN (not visible) is shown by white cross-hairs Earlier SN is presumed to have faded and is no longer visible |
CCD Image (125% size, square root scale, cropped) Image details as above |
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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 with SN 2021gmj - 2021-12-17 (T+271.9d) Image below (2021-12-17.187) was taken 271.9 days after discovery of 2021gmj SN is no longer visible |
CCD Image (100% size, log scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-17 04:40 UT (#942305-08) 12" LX200R (at f/10.4) + ST-10XME Non-Guided |
NGC 3310 with SN 2021gmj - Earlier Image, 2021-03-24 (T+4.6d) Image below (2021-03-24.915) was taken 4.6 days after discovery of 2021gmj SN position indicated by white cross-hairs |
Annotated CCD Image (100% size, log scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-03-24 22:07 UT (#875043-47) 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 >> |
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NGC 3836 with SN 2021aefs (Crater) SN 2021aefs (Type: II) discovered 2021-11-09.272 UT by Gaia Alias: Gaia21fch Transient Alert triggered at mag +18.36 ( Rochester Supernova site | Gaia21fch ) |
NGC 3836 - Spiral Galaxy Poor quality image - single unguided frame / bright sky |
CCD Image (100% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-12-17 05:38 UT (#942340) 12" LX200R (at f/10.4) + ST-10XME Non-Guided |
NGC 3836 with SN 2021aefs - 2021-12-17 (T+38.0d) Image below (2021-12-17.224) was taken 38.0 days after discovery of 2021aefs Poor quality image - single unguided frame / bright sky |
CCD Image (100% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2021-12-17 05:38 UT (#942340) 12" LX200R (at f/10.4) + ST-10XME Non-Guided |
Images of SN 2021aefs (NGC 3836) on Supernovae 2021 Page |
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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- 2021-12-16
(T+9.7d) NGC 7446 with adjacent named galaxies NGC 7445 and NGC 7449 plus several other unlabelled galaxies |
Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-16 19:42 UT (#942013-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
NGC 7446 with SN 2021agdd - 2021-12-16 (T+9.7d) Image below (2021-12-16.815) was taken 9.7 days after discovery of 2021agdd SN is shown by white cross hairs. Measured Magnitude +16.25 |
Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-16 19:42 UT (#942013-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Negative CCD Image (125% size, square root scale, cropped) Image details as above |
Images of SN 2021agdd (NGC 7446) on Supernovae 2021 Page >> |
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SBS 0951+534 (Ursa Major) Galaxy had earlier SN 2021hmc (Type: Ia) discovered 2021/03/29.178 UT by ZTF Alias: ZTF18acsremz ( Rochester Supernova site ) |
CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-17 05:56 UT (#942344-47) 12" LX200R (at f/10.4) + ST-10XME Non-Guided |
SBS 0951+534 - detail Image below (2021-12-17.242) was taken 263.1 days after discovery of SN 2021hmc |
CCD Image (125% size, square root scale, cropped) Image details as above Non-Guided |
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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) |
Annotated CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-17 04:17 UT (#942298-301) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
UGC 3855 with SN 2021agco - 2021-12-17 (T+11.6d) Image below (2021-12-17.172) was taken 11.6 days after discovery of 2021agco Position of reported SN (very faint) is shown by white cross-hairs |
Annotated CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-17 04:17 UT (#942298-301) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
Negative CCD Image (125% size, square root scale, cropped) Image details as above |
Images of SN 2021agco (UGC 3855) on Supernovae 2021 Page >> |
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UGC 4671 with SN 2021afsj (Ursa Major) SN 2021afsj (Type: Ia) discovered 2021-11-29.718 UT by Shuji Tokuoka Alias: Gaia21flf, ZTF21acqstfo ( Rochester Supernova site | Gaia21flf ) |
Annotated CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-16 23:56 UT (#942179-82) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
UGC 4671 with SN 2021afsj - 2021-12-16 (T+17.3d) Image below (2021-12-16.989) was taken 17.3 days after discovery of 2021afsj Position of SN is shown by white cross-hairs Measured magnitude +14.0 |
Annotated CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-12-16 23:56 UT (#942179-82) 12" LX200R (at f/10.4) + ST-10XME Non-guided |
Images of SN 2021afsj (UGC 4671) on Supernovae 2021 Page >> |
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This Web Page: | CCD Images - Session 942 (2021-12-16) |
Last Updated : | 2024-05-26 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |