David's Astronomy Pages CCD Images - Session 1137 (2023-09-01)

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Session Notes

C/2020 R7 (ATLAS) - Comet (Attempt)     UGC 2690 - Spiral Galaxy with Type II Supernova 2023nfg UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut       - UGC 9002 w/SN2023pls , C/2022 L2 (ATLAS) & NGC 1461 w/AT2023och attempts failed (due to cloud, bright sky background / poor sky transparency, haze     Variable Stars (photometric monitoring) - None      Nearby Stars (astrometric monitoring) -  None   -

- Attempted all-night session (6.9 hrs),  interrupted by cloud     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 8°C (min) - CCD Temperature:  -10°/-15° C - Notes from 2023-09-01 >>     -

C/2020 R7 (ATLAS) - Comet (Attempt)

C/2020 R7 (ATLAS) - 2023-09-01  (passing through Corona Borealis) Sun Distance 4.47 AU (receeding) Earth Distance 4.75 AU (710.7 million km) Expected position of comet (not visible) is shown by white circle		C/2020 R7 (ATLAS) - 2023-09-01 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 2.73 arcsec/hr, Dec -9.53 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-09-01 21:24 UT (#1137014-18) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) Image details as left
Images of C/2020 R7 (ATLAS) on Comets 2023 Page >>

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UGC 2690 - Spiral Galaxy with Type II Supernova 2023nfg

UGC 2690 with SN 2023nfg (Cetus) SN 2023nfg (Type: II) discovered 2023-07-15.334 UT by ATLAS Alias: ATLAS23orz Discovery Magnitude 18.34 ( orange-ATLAS Filter)  ( TNS 2023nfg )

UGC 2690 with SN 2023nfg - 2023-09-02 (T+48.8d) Image below (2023-09-02.124) was taken 48.8 days after discovery of 2023nfg Position of reported SN (not separately distinguishable) is indicated by white cross-hairs. Measured Magnitude +15.64 (nucleus + SN)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-02 03:07 UT (#1137042-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023nfg (in UGC 2690) on Supernova 2023 Page >>

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UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut

UGC 3174 with SN 2023mut (Orion) SN 2023mut (Type: IIb) discovered 2023-07-11.180 UT by ASAS-SN Alias: ASASSN-23fh Discovery Magnitude 15.2 (g-Sloan Filter)  ( TNS 2023mut )

UGC 3174 with SN 2023mut - 2023-09-02 (T+52.9d) Image below (2023-09-02.112) was taken 52.9 days after discovery of 2023mut Position of reported SN (indistinct) is indicated by white cross-hairs. Measured Magnitude +14.91 (nucleus + SN)

Annotated CCD Image (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-09-02 02:48 UT (#1137035-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023mut (in UGC 3174) on Supernova 2023 Page >>

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