David's Astronomy Pages Images - Session 1157 (2023-10-16)

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Images (S1158)

Objects	Session Notes
103P/Hartley - Comet     Nova Cas 2021 - Nova (V1405 Cas)     AT 2023cub - Transient     Nova AT 2023trk - Extragalactic Nova in M31 NGC 2708 - Spiral Galaxy with Type Ia Supernova 2023bee         Variable Stars (photometric monitoring) - SY Cnc      Nearby Stars (astrometric monitoring) - None	- Post-midnight session (1.8 hrs), following clearance of evening/midnight  cloud cover at around 04:30 LT.     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 2°C (min) - CCD Temperature:   -20° C - Notes from 2023-10-16 >>     -

103P/Hartley - Comet

103P/Hartley - 2023-10-17 (passing through Gemini) Sun Distance 1.07 AU (turning) Earth Distance 0.42 AU (62.7 million km)		103P/Hartley - 2023-10-17  Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 133.70 arcsec/hr, Dec -125.01 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 60s exposure (single frame), 3x3 binning, Clear Filter 2023-10-17 04:30 UT (#1157026) 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) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-10-17 04:36 UT (#1157026-34) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 103P/Hartley on Comets 2023 Page >>

103P/Hartley - 2023-10-17 Moving at 3.1 arcmin/hr

False Colour CCD Image (70% size, log scale) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-10-17 04:36 UT (#1157026-34) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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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) AT2021hkn (Type: Nova) reported by 2021/03/30.055 UT by Gaia Alias: Gaia21bpe, AT2021hkn, V1405 Cas

Nova Cas 2021 - 2023-10-17 (T+942.7d) Image below (2023-10-17.159) was taken 942.7 days after discovery of nova Nova is shown by white cross hairs.  Measured magnitude +12.02

Annotated CCD Image (100% size, linear scale, cropped) 4 x 30s exposure (average combine), 3x3 binning, Clear Filter 2023-10-17 03:51 UT (#1157005-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Cas 2021 (V1405 Cas) Spectra - 2023-10-17 (T+942.7d)

Spectra produced in AstroMain using Image taken with Star Analyser 200 5 x 90s exposure (average combine), 2x2 binning, S Filter 2023-10-12 03:02 UT (#1156184-88) 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 2023cub - Transient

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Nova AT 2023trk - Extragalactic Nova in M31

Nova AT 2023trk in M31 (Andromeda) AT 2023trk (Type: EGN) discovered 2023-09-26.461 UT by ATLAS Alias: ATLAS23tfn, PNV J00441143+4120239 Discovery Mag 17.38 (orange-ATLAS filter)  ( TNS 2023trk )

Nova M31 AT 2023trk - 2023-10-17 (T+20.7d) Image below (2023-10-17.173) was taken 20.7 days after discovery of 2023trk Position of reported transient (very faint) is shown by white cross-hairs Measured Magnitude ?

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-10-17 04:17 UT (#1157018-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of Nova AT 2023trk (in M31) on Transients 2023 Page >>

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NGC 2708 - Spiral Galaxy with Type Ia Supernova 2023bee

NGC 2708 with SN 2023bee (Hydra) SN 2023bee (Type: Ia) discovered 2023-02-01.750 UT by DLT40 Alias: DLT23b, ZTF23aabtgej, ATLAS23bqm Discovery Mag 17.26 (Clear filter)  ( Rochester Supernova site | TNS 2023bee )

NGC 2708 with SN 2023bee - 2023-10-17 (T+257.4d) Image below (2023-10-17.197) was taken 257.4 days after discovery of 2023bee Position of earlier SN (very faint / barely visible) is shown by white cross-hairs

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-10-17 04:53 UT (#1157037-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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

NGC 2708 with SN 2023bee - Earlier Image2023-02-14 (T+12.3d) Image below (2023-02-14.016) was taken 12.3 days after discovery of 2023bee Position of reported SN (bright) is shown by white cross-hairs Measured magnitude  +13.56

Annotated CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2023-02-14 00:32 UT (#1098121-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2023bee (NGC 2708) on Supernova 2023 Page >>

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