David's Astronomy Pages CCD Images - Session 841 (2020-12-21)

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Images (S842)

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Session Notes

398P/Boattini - Comet     AT2020aapw - Extra Galactic Nova in M31 (Attempt) AT2020acxk - Variable Star (CV)     ARP 58 - Spiral Galaxy with small HSB on arm (UGC 4457)     M85 - Elliptical Galaxy with SN 2020nlb     NGC 517 and NGC 515 - Spiral Galaxies NGC 2974 - Elliptical Galaxy (UGCA 172) NGC 4742 - Elliptical Galaxy (UGCA 303)     UGCA 154 - Galaxy (PGC 26188) UGCA 193 - Spiral Galaxy (PGC 29086) UGCA 205 - Irregular Galaxy (Sextans A, PGC 29653), Local Group - 4.0 mly     UGC 5173 - Spiral Galaxy (PGC 27681) UGC 5760 - Spiral Galaxy with Type II Supernova 2020zoq UGC 9340 - Spiral Galaxy (PGC 51864) with Type II Supernova 2020acac UGC 9625 - Spiral Galaxy (PGC 53470) with Type Ia Supernova 2020acai (Attempt)     VV 36 - Interacting Galaxies (NGC 517 & PGC 212751)     Variable Stars (photometric monitoring) - U And, AM CVn, SY Cnc, SS Cyg, U Mon, RR Tau     Nearby Stars (astrometric monitoring) - Groombridge 34

- Night session (8.1 hours) - Main aims of the session were the acquisition of a selection of variable star, nearby star and comet targets and deep sky targets as conditions allow - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 1°C (min) - CCD Temperature:  -20°/-25°C - Notes from 2020-12-21 >>      -

398P/Boattini - Comet

398P/Boattini (passing through Eridanus) Sun Distance 1.31 AU (approaching) Earth Distance 0.38 AU (56.2 million km)		398P/Boattini - 2020-12-22, Detail Alias: P/2020 P2 (Boattini) Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 30.79 arcsec/hr, Dec 73.67 arcsec/hr)
CCD Image (50% size, square root scale) 2 x 45s exposure (average combine), 3x3 binning, C Filter 2020-12-22 00:11 UT (#841040-41) 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) 8 x 45s exposure (average combine), 3x3 binning, C Filter 2020-12-22 00:14 UT (#841040-48) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 398P/Boattini on Comets 2020 Page >>

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AT2020aapw - Extra Galactic Nova in M31 (attempt)

M31 w/Nova AT2020aapw (Andromeda) AT2020aapw (Type: EGN) discovered 2020-11-20.400 UT by ASAS-SN Alias: ASASSN-20om, PNV J00401974+4049360 Magnitude at discovery +16.6 (2020-11-20) but dimmed rapidly to +19.8 (2020-11-25)  ( Rochester Supernova site | Discovery Image |  )

M31 w/Nova AT2020aapw, 2020-12-21 (T+31.6d) Image below (2020-12-21.979) was taken 31.6 days after discovery of AT2020aapw Position of reported EGN is shown by white circle. No visual indication of nova, which is presumed to have dimmed to below limiting magntitude (~19.0) This is consistent with dimming reported on 2020-11-25 (+19.8 at T+5.0d)

Annotated CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-21 23:17 UT (#841003-06) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 w/Nova AT2020aapw - Detail, 2020-12-21 (T+5.7d) Position of the reported EGN is shown by white circle. No visual indication of nova, which is presumed to have dimmed to below image's limiting magntitude (~19.0) This is consistent with the dimming reported on 2020-11-25 (+19.8 at T+5.0d)

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

M31 (part)

CCD Image (50% size, square root scale) Image details as above

Negative CCD Image (50% size, square root scale) Image details as above

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AT2020acxk, outburst of candiate CV (CRTS J010522.2+110253) - Variable Star (CV)

AT2020acxk (Pisces) AT2020acxk (Type: CV) discovered 2020/12/16.316 UT by Gaia Alias: Gaia20ftq, CRTS J010522.2+110253 Magnitude at discovery +15.1 vs normal magnitude of +20.8  ( Rochester Supernova site )

AT2020acxk, 2020-12-21 (T+5.7d) Image below (2020-12-21.979) was taken 5.7 days after discovery of AT2020acxk CV is shown by white cross hairs.  Measured magnitude +15.6

Annotated CCD Image (50% size, linear scale) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2020-12-21 23:30 UT (#841009-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT2020acxk - Detail, 2020-12-21 (T+5.7d)

Annotated CCD Image (100% size, linear scale, cropped) Image details as above

AT2020acxk - Earlier Image, 2020-12-20 (T+4.5d) Image below (2020-12-20.821) was taken 4.5 days after discovery of AT2020acxk CV is shown by white cross hairs.  Measured magnitude +15.6

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2020-12-20 19:42 UT (#840061-65) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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ARP 58 - Spiral Galaxy with small HSB on arm (UGC 4457)

ARP 58 / UGC 4457 (Cancer) Taken through dual-band filter		ARP 58 / UGC 4457 - Earlier Image (2019-12-05) Note: bright star to upper left of ARP 58 is 11th magnitude star GSC 1387:691
Annotated CCD Image (50% size, square root scale) 7 x 180s exposure (average combine), 3x3 binning, DB Filter 2020-12-22 01:34 UT (#841093-99) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2019-12-05 01:18 UT (#727319-23) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
ARP 58 - Detail		ARP 58 - Earlier Detail  (2019-12-05) UGC 4457 / PGC 23935 (catalog mag +15.4) PGC 23937 (catalog mag ?)
CCD Image (125% size, square root scale, cropped) Image details as above		Annotated  CCD Image (125% size, log scale, cropped) Image details as above left

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M85 - Elliptical Galaxy with SN 2020nlb

M85 with SN 2020nlb (Coma Berenices) SN 2020nlb (Type Ia), discovered 2020/06/25.251 by ATLAS  (Rochester Supernova site |  Confirmation Image | R. Spellman Image |  mag ~ 18.5 at discovery )

M85 with SN 2020nlb - 2020-12-22 (T+179.9d) Image (2020-12-22.189) taken 179.9 days after SN discovery.  Measured SN magnitude +16.6

Annotated CCD Image (100% size, square root scale, cropped) 7 x 45s exposure (average combine), 3x3 binning, C Filter 2020-12-22 04:32 UT (#841149-58) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M85 - Wider View Image with NGC 4394 (H II-55)

Annotated CCD Image (50% size, square root scale) Image details as above

Images of SN 2020nlb (M85) on Supernovae 2020 Page >>

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NGC 517 and NGC 515 - Spiral Galaxies

NGC 517 & NGC 515 (Pisces) NGC 517 (catalog mag +12.5),  NGC 515 (catalog mag +13.1) IC 1691 (catalog mag +15.2),  PGC 197586 (catalog mag +17.4

Annotated CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-21 23:49 UT (#841016-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 517 & NGC 515 -  Detail

CCD Image (150% 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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NGC 2974 - Elliptical Galaxy (UGCA 172)

NGC 2974 (Sextans) Alias: UGCA 172 (catalog mag +10.9 or +11.9) The bright foreground star in line with the galaxy is BD-03 2751

CCD Image (50% size, log scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 05:01 UT (#841168-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 2974 / UGCA 172 - Detail

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

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

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NGC 4742 - Elliptical Galaxy (UGCA 303)

NGC 4742 (Virgo) Alias: UGCA 303 (Catalog mag +11.3 or +12.4)

CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 06:15 UT (#841174-76) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4742 / UGCA 303 - 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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UGCA 154 - Galaxy (PGC 26188)

UGCA 154 (Ursa Major) Alias: PGC 26188 (catalog mag +14.6) with adjacent galaxy PGC 26174 (catalog mag +16.1)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 04:01 UT (#841139-43) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 154 -  Detail

CCD Image (150% size, square root scale, cropped) Image details as above

Negative CCD Image (150% size, square root scale, cropped) Image details as above

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UGCA 193 - Spiral Galaxy (PGC 29086)

UGCA 193 (Sextans) Alias: PGC 29086 (catalog mag +14.6) with several faint galaxies in same field of view: PGC 182114 (catalog mag +16.2), PGC 1036972 (catalog mag +16.5), PGC 1037398 (catalog mag +17.7) &  PGC 1037313 (catalog mag +17.8)

Annotated CCD Image (50% size, square root scale) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 03:10 UT (#841122-25) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 193 -  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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UGCA 205 - Irregular Galaxy (Sextans A, PGC 29653), Local Group - 4.0 mly

UGCA 205 (Sextans) Local Group Galaxy Alias: Sextans A, PGC 29653

CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 03:29 UT (#841128-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGCA 205 -  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

UGCA 205 -  Earlier Image (2007)

CCD Image 5 x 180s exposure (summed combine), 2x2 binning, C filter, Smoothed 2007-03-15  23:04h UT (#183251-55) 8" LX200 + ST-7E

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UGC 5173 - Spiral Galaxy (PGC 27681)

UGC 5173 (Leo) Flat Galaxy Atlas Alias: PGC 27681 (catalog mag +14.8) with other galaxies:  PGC 27683 (catalog mag +15.2), PGC 27701 (catalog mag +14.9), & PGC 213624 (catalog mag +17.9)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 02:45 UT (#841114-18) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 5173 -  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 5760 - Spiral Galaxy with Type II Supernova 2020zoq

UGC 5760 w/SN 2020zoq (Leo) SN 2020zoq (Type II, z=0.0, zhost=0.010040) discovered 2020/11/14.561 by ASAS-SN  (Rochester Supernova site | Discovery Image | ) Image below (2020-12-22.083) was taken 37.5 days after discovery of SN 2020zoq SN is shown by white cross hairs.

CCD Image  (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 02:00 UT (#841101-05) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 5760 w/SN 2020zoq - 2020-12-22 (T+37.5d) Image below (2020-12-22.083) was taken 37.5 days after discovery of SN 2020zoq SN is shown by white cross hairs.  Measured magnitude +16.0

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

Images of SN 2020zoq (UGC 5760) on Supernovae 2020 Page >>

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UGC 9340 - Spiral Galaxy (PGC 51864) with Type II Supernova 2020acac

UGC 9340 w/ SN 2020acac ? (Bootes) SN 2020acac (Type: II, zhost=0.015137) discovered 2020-12-05.535 UT by ZTF Alias: ZTF20acbjgoa, Gaia20fpu

UGC 9340 w/ SN 2020acac - 2020-12-22, T +16.6d) Image below (2020-12-22.099) was taken 16.6 days after discovery of SN 2020acac SN is too faint to see in the poor quality image below

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 02:22 UT (#841108-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 9340 w/ SN 2020acac - Earlier Image (2020-12-21, T +15.7d) Image below (2020-12-21.207) was taken 15.7 days after discovery of SN 2020acac SN is assumed to be the object shown by white cross hairs.  Magnitude ?

Annotated CCD Image  (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-21 04:58 UT (#840234-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2020acac (UGC 9340) on Supernovae 2020 Page >>

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UGC 5173 - Spiral Galaxy (PGC 27681)

UGC 5173 (Leo) Flat Galaxy Atlas Alias: PGC 27681 (catalog mag +14.8) with other galaxies:  PGC 27683 (catalog mag +15.2), PGC 27701 (catalog mag +14.9), & PGC 213624 (catalog mag +17.9)

Annotated CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 02:45 UT (#841114-18) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 5173 -  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 9625 - Spiral Galaxy (PGC 51864) with Type Ia Supernova 2020acai (Attempt)

UGC 9625 w/ SN 2020acai (Virgo) SN 2020acai (Type: Ia, z host=0.026892) discovered 2020-12-09.561 UT by ZTF Alias: ZTF20acwfftd, Gaia20ftm Mag ~ +18.0 at discovery, dimming to +18.5 (2020-12-15)

UGC 9625 w/ SN 2020acai - 2020-12-22 (T+12.7d) Image below (2020-12-22.294) was taken 12.7 days after discovery of SN 2020acai No indication of SN object

CCD Image  (100% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-22 07:03 UT (#841178-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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VV 36 - Interacting Galaxies (NGC 517 & PGC 212751)

VV 36 (Pisces) Vorontsov-Velyaminov Catalogue Alias: NGC 517 & PGC 212751

Annotated CCD Image (50% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, C Filter 2020-12-21 23:49 UT (#841016-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

VV 36 -  Detail

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

Negative CCD Image (150% size, square root scale, cropped) Image details as above

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