David's Astronomy Pages CCD Images - Session 923 (2021-10-10)

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Images (S924)

Objects	Session Notes
67P/Churyumov-Gerasimenko - Comet      NGC 6184 - Spiral Galaxy with Type Ia Supernova 2021wkv     SN 2021wcu - Type Ia Supernova in GALEXASC J072024.60+325058.8      Variable Stars (photometric monitoring) - None - Z And & CY Aqr attempts failed (due to cloud)      Nearby Stars (astrometric monitoring) - B	- Full night Session (8.8 hours). - Clear skies all night but poor seeing and moonlit - Main aims of the session were to acquire a selection of targets including  Comet 67P/Churyumov-Gerasimenko - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 12°C (min) - CCD Temperature:  -10°C - Notes from 2021-10-10 >>    [ Local Files >> ]   -

67P/Churyumov-Gerasimenko - Comet

67P/Churyumov-Gerasimenko - 2021-10-11 (passing through Taurus) Sun Distance 1.24 AU (approaching) Earth Distance 0.46 AU (68.3 million km)		67P/Churyumov-Gerasimenko - 2021-10-11, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 172.36 arcsec/hr, Dec 29.90 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-10-11 03:16 UT (#923033-35) 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) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-10-11 03:16 UT (#923033-35) 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 >>

67P/Churyumov-Gerasimenko - False Colour Image(s)  Inverse Spectrum

67P/Churyumov-Gerasimenko - 2021-10-11

False Colour CCD Image (70% size, log scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2021-10-11 03:16 UT (#923033-35) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 6184 - Spiral Galaxy with Type Ia Supernova 2021wkv

NGC 6184 with SN 2021wkv (Hercules) SN 2021wkv (Type: Ia, zhost=0.027329) discovered 2021/08/20.277 UT by ATLAS Alias: ATLAS21bgqy.  Magnitude +18.2 at discovery  (Rochester Supernova site )

NGC 6184 with SN 2021wkv - 2021-10-10 (T+51.6d) Image below (2021-10-10.863) was taken 51.6 days after discovery of 2021wkv Position of SN (barely visible) is shown by white cross-hairs. Poor quality image (poor seeing, wind shake?)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-10 20:52 UT (#923004-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021wkv (NGC 6184) on Supernovae 2021 Page >>

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SN 2021wcu - Type Ia Supernova in GALEXASC J072024.60+325058.8 (Attempt)

SN 2021wcu in GALEXASC J072024.60+325058.8 (Gemini) SN 2021wcu (Type: Ia) discovered 2021-08-13.497 UT by ZTF Alias: ZTF21abtdlno, Gaia21eaw  (Rochester Supernova site | TNS 2021wcu | Gaia21eaw )

SN 2021wcu - 2021-10-11 (T+58.7d) Image below (2021-10-11.158) was taken 58.7 days after discovery of 2021wcu Position of SN (very faint) is shown by white cross-hairs. Poor quality image (poor sky transparency / cloud)

Annotated CCD Image  (150% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-11 03:50 UT (#923043-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021wcu (GALEXASC J072024.60+325058.8) on Supernovae 2021 Page >>

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