David's Astronomy Pages CCD Images - Session 812 (2020-09-19)

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Session Notes

11P/Tempel-Swift-LINEAR - Comet C/2019 L3 (ATLAS) - Comet     Abell 400 - Galaxy Cluster (NGC 1128 et al)     NGC 2782 - Spiral Galaxy with Type Ia Supernova 2020scc NGC 7592 - Spiral Galaxy NGC 7678 - Spiral Galaxy (ARP 28) NGC 7722 - Spiral Galaxy with Type Ia Supernova 2020ssf     UGCA 42 - Irregular Galaxy (PGC 10650) UGCA 220 - Irregular Galaxy (PGC 32385)     UGC 542 - Spiral Galaxy (PGC 3133) UGC 695 - Dwarf Galaxy, 30 mly UGC 711 - Spiral Galaxy (PGC 4063) UGC 1856 - Spiral Galaxy (PGC 9134) UGC 2082 - Spiral Galaxy (PGC 9888) UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq UGC 10528 - Spiral Galaxy (PGC 58896) with SN 2020ekk UGC 11994 - Spiral Galaxy (PGC 68617)     Variable Stars (photometric monitoring) - RX And, U And, TT Ari, CI Cyg, SS Cyg, U Her, BL Lac, GK Per     Nearby Stars (astrometric monitoring) - HH And, 61 Cyg, Groombridge 34, Teegardens Star

- All night session (8.7 hours total) - Main aims of the session were the acquisition of a selection of deep sky targets, together with some variable star, nearby starand comet targets - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 8°C (min) - CCD Temperature:  -10°C  - Notes from 2020-09-19 >>      -

11P/Tempel-Swift-LINEAR - Comet

11P/Tempel-Swift-LINEAR (passing through Pegasus) Sun Distance 1.57 AU Earth Distance 0.63 AU (94.5 million km) (forecast mag in TheSky6 +10.0) No indication of a comet at expected position (circled) Star Field to be reshot in following session. Comet to be be reshoot at 10 x 180s in a fresh attempt to view it.		11P/Tempel-Swift-LINEAR - 2020-09-19, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -6.59 arcsec/hr, Dec -0.97 arcsec/hr) Object close to comet's expected location might be the comet but at mag +18 or so it is much dimmer than the forecast mag
Annotated CCD Image (50% size, square root scale)  9 x 45s exposure (average combine), 3x3 binning, C Filter 2020-09-19 21:57 UT (#812091-99) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, square root scale, cropped) Image details as left
Observations at professional observatories confirm that the comet is indeed much fainter than the magnitude forecast in TheSky6, e.g. Pan-STARRS 2 telescope recorded comet at mag +20.3 to +20.6 on 2020-09-01 Observatorio de Cantabria recorded comet at mag +18.9 on 2020-08-31 http://www.minorplanetcenter.net/db_search/show_object?object_id=11P
Images of 11P/Tempel-Swift-LINEAR on Comets 2020 Page >>

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C/2019 L3 (ATLAS) - Comet

C/2019 L3 (ATLAS) (passing through Cassiopeia) Sun Distance 5.47 AU  (approaching) Earth Distance 5.00 AU (748.3 million km)		C/2019 L3 (ATLAS)  - 2020-09-19, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -30.68 arcsec/hr, Dec 7.27 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 7 x 45s exposure (average combine), 3x3 binning, C Filter 2020-09-19 22:09 UT (#812102-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, square root scale, cropped) Image details as left
Images of C/2019 L3 (ATLAS) on Comets 2020 Page >>

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Abell 400 - Galaxy Cluster (NGC 1128 et al)

Abell 400 Galaxy Cluster (Cetus) NGC 1128 et al NGC 1128/ PGC 11188 (catalog mag +13.9 ?), PGC 11189 (catalog mag +16.0), PGC 11179 (catalog +15.3), PGC 11199 (catalog mag +15.8),  PGC 11184 (catalog mag +16.0), PGC 11238 (catalog mag 16.2),  PGC 11160 (catalog mag +16.2), PGC 11193 (catalog mag +16.4),  PGC 11168 (catalog +16.4), PGC 11196 (catalog mag +17.1), PGC 74254 (catalog mag +17.1), PGC 11171 (catalog mag +17.3) PGC 11164 (catalog mag 18.0), PGC 141443 (catalog mag ?),  PGC 11219 (catalog mag ?), PGC 141444  (catalog mag ?)

CCD Image (70% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-20 04:04 UT (#812263-66) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Abell 400 Galaxy Cluster - Detail

Annotated CCD Image (70% size, square root scale) Image details as above

Negative CCD Image (70% size, square root scale, cropped) Image details as above

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NGC 2782 - Spiral Galaxy (ARP 215) with Type Ia Supernova 2020scc

NGC 2782 with SN 2020scc (Lynx) SN 2020scc (Type Ia, z=0.008483) discovered 2020/08/20.915 by Xingming Observatory Sky Survey (XOSS)  ( Rochester Supernova site | Discovery image | )

NGC 2782 with SN 2020scc - Detail, 2020-09-20 (T+30.1d) Image below (2020-09-20.042) was taken 30.1 days after discovery of SN 2020scc SN is shown by white cross hairs.  Measured SN magnitude +15.3

Annotated CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-20 01:00 UT (#812168-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020scc (NGC 2782) on Supernovae 2020 Page >>

NGC 2782 - Earlier Image, 2020-04-13 (T-129.0d) Image below (2020-04-13.885) was taken 129.0 days before discovery of SN 2020scc No sign of any object at location of the later supernova.

CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-04-13 21:15 UT (#767009-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 7592 - Spiral Galaxy

NGC 7592 (Aquarius) Interacting Galaxy

CCD Image (125% size, square root scale, cropped) Image details as above

NGC 7592 - Earlier Image (2020-09-13)

CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-13 22:09 UT (#808077-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 7592 - Earlier Wider View Image (2020-09-13)

Annotated CCD Image  (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-13 22:09 UT (#808077-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 7678 - Spiral Galaxy (ARP 28)

NGC 7678 (Pegasus) Alias: ARP 28

Annotated CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-19 23:15 UT (#812130-34) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 7678 - Detail

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

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

NGC 7678 - Earlier Image (2003-10-17)

CCD Image composite (linear scale) 2 images (composited), 6 x 20 sec exposure (median) 2003-10-17  22:54 to 22:57 h UT (#53175-80) 8" LX200 Classic + ST-7E

Negative CCD Image (linear scale) Image details as above

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NGC 7722 - Spiral Galaxy with Type Ia Supernova 2020ssf

NGC 7722 (Pegasus) SN 2020ssf (Type Ia , zhost=0.013350) , TNS discovered 2020/09/06.252 by Zwicky Transient Facility (ZTF)  (Rochester Supernova site | Andre Mantero image | )

NGC 7722 with SN 2020ssf -2020-09-19 (T+13.7d) Image below (2020-09-19.939) was taken 13.7 days after discovery of SN 2020ssf SN is shown by white cross hairs.

CCD Image (125% size, log scale, cropped) 4 x 120s exposure (average combine), 3x3 binning, C Filter 2020-09-19 22:32 UT (#812115-19) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020ssf (NGC 7722) on Supernovae 2020 Page >>

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UGCA 42 - Irregular Galaxy (PGC 10650)

UGCA 42 (Cetus) Alias:  PGC 10650

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-20 03:15 UT (#812225-29) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 42 - Detail

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

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UGCA 220 - Irregular Galaxy (PGC 32385)

UGCA 220 Ursa Major) Catalog mag ?. Dec +64d Alias : PGC 32385 Galaxy (circled) has very low surface brightness and is almost invisible in image below

Annotated CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-20 01:22 UT (#812175-79) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 220 - Detail By increasing the contrast, the galaxy is just visible against the noisy background

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

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

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UGC 542 - Spiral Galaxy (PGC 3133)

UGC 542 (Pisces) Flat Galaxy Atlas Alias:  PGC 3133

Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-20 02:09 UT (#812197-201) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 542 - Detail

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

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

UGC 542 - Earlier Image (2020-09-19) Image is quite noisy, only one frame was acquired. Target to be rescheduled for a future session

CCD Image (100% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2020-09-19 01:05 UT (#811142) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGC 695 - Dwarf Galaxy (PGC 4013), 30 mly

UGC 695 (Cetus) Isolated dwarf galaxy (30 mly).   Alias:   PGC 4013,  LEDA 4013   UGC 695 is a low-surface-brightness (LSB) galaxy which make is pretty faint. These galaxies are so faint that their brightness is less than the background brightness of Earth’s atmosphere, which makes them tricky to observe. This low brightness is the result of the relatively small number of stars within them.

UGC 695 / PGC 4013 (catalog mag +15.3)

Annotated CCD Image  (50% size, square root scale) 7 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-19 23:40 UT (#812137-43) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 695 - Detail

CCD Image  (150% size, square root scale, cropped) Image details as above (cf.  Hubble Picture - Hubble Glimpses Faint Galaxy, Sep 2019 )

UGC 695 - Earlier Image (2020-09-17)

CCD Image  (100% size, square root scale, cropped) 6 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-17 00:09 UT (#809007-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 695 / PGC 4013 with adjacent faint galaxies - Earlier Wider View Image (2020-09-17) PGC 135624 (catalog mag +17.3), PGC 1183501 (catalog mag +17.6), PGC 1182951 (catalog mag +17.8),  PGC 212662 (catalog mag +18.2)

Annotated CCD Image  (70% size, square root scale, cropped) 6 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-17 00:09 UT (#809007-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 (cf.  Hubble Picture - Hubble Glimpses Faint Galaxy, Sep 2019 )

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UGC 711 - Spiral Galaxy (PGC 4063)

UGC 711 (Cetus) Flat Galaxy Atlas Alias : PGC 4063 Bright foreground star is GSC 19:146 (magnitude +9.7)

CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-20 00:09 UT (#812147-51) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 711 - Detail

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

UGC 711 - Earlier Image (2020-09-18)

CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-18 23:22 UT (#811092-95) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 711 - Earlier Image (2020-09-10) Target poorly defined in image below (single frame, moonlit sky) and needs to be rescheduled for a darker night

CCD Image (100% size, linear scale, cropped) 180s exposure (single frame), 3x3 binning, C Filter 2020-09-10 00:32 UT (#807044) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGC 1856 - Spiral Galaxy (PGC 9134)

UGC 1856 (Triangulum) Flat Galaxy Atlas Alias: PGC 9134

Annotated CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-20 00:29 UT (#812153-57) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 1856 - Detail

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

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

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UGC 2082 - Spiral Galaxy (PGC 9888)

UGC 2082 (Aries) Flat Galaxy Atlas Alias:  PGC 9888

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-20 02:52 UT (#812218-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 2082 - Detail

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

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

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UGC 6930 - Spiral Galaxy with Type Ia Supernova 2020rcq

UGC 6930 with SN 2020rcq (Ursa Major) SN 2020rcq (Type 1a, z=0.002597) discovered 2020/08/09.168 by Zwicky Transient Facility (ZTF)  (Rochester Supernova site | Giancarlo Cortini image | )

UGC 6930 with SN 2020rcq - Detail, 2020-09-18 (T+41.9d) Image below (2020-09-20.071) was taken 41.9 days after discovery of SN 2020rcq SN is shown by white cross hairs.  Measured SN magnitude +12.7

Annotated CCD Image (100% size, square root scale, cropped) 5 x 120s exposure (average combine), 3x3 binning, C Filter 2020-09-20 01:42 UT (#812182-86) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020rcq (UGC 6930) on Supernovae 2020 Page >>

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UGC 10528 - Spiral Galaxy (PGC 58896) with SN 2020ekk

UGC 10528 with SN 2020ekk - Detail SN 2020ekk (Type II) discovered 2020/03/11.779 by Koichi Itagaki  (Rochester Supernova site |  Discovery Image (Mag +17.2) |  Marc Deldem Image )

UGC 10528 with SN 2020ekk - 2020-09-19 (T+192.0d) Image below (2020-09-19.844) was taken 192 days after discovery of SN 2020ekk Former position of SN is shown by white cross hairs.   SN is no longer visible (mag > 18.5)

Annotated CCD Image (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-19 20:15 UT (#812016-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 10528 with SN 2020ekk - Earlier Image 2020-03-20 (T+8.2d) Image below (2020-03-20.004) was taken 8.23 days after discovery of SN 2020ekk SN is shown by white cross hairs.   Estimated SN magnitude +16.2

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-03-20 00:06 UT (#763117-21) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020ekk (UGC 10528) on Supernovae 2020 Page >>

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UGC 11994 - Spiral Galaxy (PGC 68617)

UGC 11994 (Pegasus) Flat Galaxy Atlas Alias: PGC 68617

Annotated CCD Image  (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-09-19 21:40 UT (#812085-89) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 11994 - Detail

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

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

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