David's Astronomy Pages CCD Images - Session 933 (2021-11-15)

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Session Notes

FO And - Variable Star (Type UGSU) Nova Cas 2021 - Nova (V1405 Cas)     AT2021aduu - Type CV Transient     NGC 1166 - Spiral Galaxy with Type II Supernova 2021zby     UGC 811 - Spiral Galaxy with Type Ia Supernova 2021aceu UGC 12188 - Spiral Galaxy with Type II Supernova 2021ucg      Variable Stars (photometric monitoring) - RX And, SS Cyg - TT Ari attempt failed due to cloud/poor sky      Nearby Stars (astrometric monitoring) - None HH And attempt failed due to cloud/poor sky

- Evening session 4.6 hours - Session interrupted by cloud & poor quality skies. Session ended by cloud at 00:08 - 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 2021-11-15 >>    [ Local Files >> ]

FO And - Variable Star (Type UGSU)

FO And (Andromeda) Unplanned image of FO And (very faint)

Annotated CCD Image (50% size, square root scale) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-15 22:47 UT (#933045-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

FO And - Detail FO And  is shown by white cross-hairs FO And in 'Quiet State'. Measured Magnitude +17.4

Annotated CCD Image (100% size, linear scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-15 22:47 UT (#933045-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

FO And - Earlier Image (2008) FO And in 'Eruptive State'. Measured Magnitude +14.9

Annotated CCD Image (100% size, linear scale, cropped) 120s sec exposure (single frame), 2x2 binning, C Filter 2008-12-02 20:28h UT (#330090) 8" LX200 Classic + ST-7E

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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 / AT2021hkn - 2021-11-15 (T+242.5d) Image below (2021-11-15.919) was taken 242.5 days after discovery of Nova Nova is shown by white cross hairs.  Measured magnitude +8.76 (linked with Detection Threshold = 30)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 30s exposure (average combine), 3x3 binning, C Filter 2021-11-15 22:04 UT (#933030-34) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Cas 2021 (V1405 Cas) Spectra

Spectra taken with Star Analyser 200 (square root scale) 5 x 30s exposure (average combine), 2x2 binning, S Filter 2021-11-15 22:08 UT (#933035-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Cas 2021 (V1405 Cas) Spectra - 2021-11-15 (T+242.5d)

Spectra produced in AstroMain using Image taken with Star Analyser 200 5 x 30s exposure (average combine), 2x2 binning, S Filter 2021-11-15 22:08 UT (#933035-39) 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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AT2021aduu - Type CV Transient

AT2021aduu (Cygnus) AT2021aduu (Type: CV) discovered 2021-11-05.930 UT by Gaia Alias: Gaia21fba [ Gaia21fba  ]  Gaia alert triggered by 0.3 mag rise in brightness (+15.55 to +15.21) AT2021aduu is shown by white cross-hairs

Annotated CCD Image (70% size, linear scale) 4 x 60s exposure (average combine), 3x3 binning, C Filter 2021-11-15 19:42 UT (#933005-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT2021aduu - 2021-11-15 (T+9.9d) Image below (2021-11-15.818) was taken 9.9 days after discovery of 2021aduu AT2021aduu is shown by white cross-hairs Measured magnitude +14.4

Annotated CCD Image (150% size, linear scale, cropped) Image details as above

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NGC 1166 - Spiral Galaxy with Type II Supernova 2021zby

NGC 1166 with SN2021zby (Aries) SN 2021zby (Type: II) discovered 2021-09-17.453 UT by ATLAS Alias: ATLAS21bixf  (Rochester Supernova site | Enrico Prosperi image )

NGC 1166 with SN2021zby - 2021-11-15 (T+59.5d) Image below (2021-11-15.969) was taken 59.5 days after discovery of 2021zby Image quality poor (high cloud & bright moonlit sky). No sign of earlier supernova (either faded or noise levels too high for detection

Annotated CCD Image  (150% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-15 23:23 UT (#933061-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 1166 with SN2021zby - Earlier Image (2021-10-30, T+43.5d) Image below (2021-10-30.954) was taken 43.5 days after discovery of 2021zby Supernova (faint) is shown by white cross-hairs

Annotated CCD Image  (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2021-10-30 23:03 UT (#930090-94) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021zby (NGC 1166) on Supernovae 2021 Page >>

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UGC 811 - Spiral Galaxy with Type Ia Supernova 2021aceu

UGC 811 with SN2021aceu (Andromeda) SN 2021aceu (Type: Ia) discovered 2021-10-22.320 UT by ASAS-SN Alias: ASASSN-21tu  (Rochester Supernova site | Discovery Image )

UGC 811 /  PGC 4579

Annotated CCD Image (50% size, square root scale) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-15 22:47 UT (#933045-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 811 with SN2021aceu - 2021-11-15 (T+24.6d) Image below (2021-11-15.944) was taken 24.6 days after discovery of 2021aceu SN position shown by white cross-hairs is very close to center of host galaxy Measured magnitude +15.2 (galaxy + SN)     vs  +15.9 (galaxy's catalog mag)

Annotated CCD Image (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-15 22:47 UT (#933045-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021aceu (UGC 811) on Supernovae 2021 Page >>

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UGC 12188 - Spiral Galaxy with Type II Supernova 2021ucg

UGC 12188 with SN2021ucg (Lacerta) SN 2021ucg (Type: II) discovered 2021/07/25.516 UT by ATLAS Alias: ATLAS21bchd Discovery Magnitude 18.06 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 18.45 Host Alias : PGC 69727 (catalog mag +14.4)  (Rochester Supernova site | Odd Trondal image  | TNS 2021ucg )

UGC 12188 with SN2021ucg - 2021-11-15 (T+113.4d) Image below (2021-11-15.903) was taken 113.4 days after discovery of 2021ucg SN (faint) show by white cross-hairs Measured magnitude +17.0

CCD Image  (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2021-11-15 21:48 UT (#933022-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2021ucg (UGC 12188) on Supernovae 2021 Page >>

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