David's Astronomy Pages CCD Images - Session 913 (2021-09-08)

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Objects	Session Notes
UGC 10607 - Spiral Galaxy with Type Ia Supernova 2021xgx 3C 58 - Supernova Remnant (attempt)           Variable Stars (photometric monitoring) - SS Cyg      Nearby Stars (astrometric monitoring) - HH And	- Late Evening Session (2.8 hours). - Session finished early due to cloud - Main aims of the session were to acquire a selection of targets as conditions allowed - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 13.5°C (min) - CCD Temperature:  -5°/-10°C - Notes from 2021-09-08 >>    [ Local Files >> ]   -

UGC 10607 - Spiral Galaxy with Type Ia Supernova 2021xgx

UGC 10607 with SN2021xgx (Hercules) SN 2021xgx (Type: Ia) discovered 2021-08-29.711 UT by ASAS-SN Alias: ASASNS-21qp, Gaia21ebg ( Rochester Supernova site | Manfred Mrotzek image | Gaia21ebg )

UGC 10607 with SN2021xgx - 2021-09-08 (T+10.2d) Image below (2021-09-08.879) was taken 10.2 days after discovery of 2021xgx SN position is shown by white cross-hairs. Measured magnitude +15.1 (SN + Galaxy Nucleus)

CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2021-09-08 21:12 UT (#913004-06) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021xgx (UGC 10607) on Supernovae 2021 Page >>

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3C 58 - Supernova Remnant (attempt)

3C 58 (Cassiopeia) Further attempted image of the supernova remnant 3C 58 30 min total exposure (again the SN remnant is not visible)

CCD Image (50% size) 10 x 180s exposure (average combine), 3x3 binning, C Filter 2021-09-08 23:32 UT (#913037-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

3C 58 Region - Detail Although image quality is good with sharply defined stars there is no hint of any nebulosity

Negative CCD Image (85% size, cropped) Image details as above

3C 58 - Reference Image  (Credit: NASA/CXC/SAO) https://www.nasa.gov/chandra/multimedia/chandra-15th-anniversary-3c58.html

Reference Image rescaled to same scale as above image

3C 58 Region - Earlier Image (2020-01-20) Image affected by poor seeing but no sign of supernova remnant in this image  (24 min total exposure )

CCD Image (85% size, cropped) 8 x 180s exposure (average combine), 3x3 binning, C Filter 2020-01-20 02:03 UT (#743073-82) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

3C 58 Region - Detail  (2020-01-20) No sign of  supernova remnant in this image  when image is pushed to maximum contrast

CCD Image (85% size, cropped) Image details as above

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