David's Astronomy - Images 2025-04-22 (S1316)

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Images - Session 1316 (2025-04-22)

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Objects Session Notes

29P/Schwassmann-Wachmann - Comet

C/2025 F2 (SWAN) - Comet (attempt)

AT 2024aeey - Transient

2MFGC 13744 - Galaxy with Type II Supernova 2024afyu

NGC 2744 - Spiral Galaxy with Type Ic Supernova 2025oq

NGC 3277 - Spiral Galaxy with Type Ib-Ca-rich Supernova 2025coe

NGC 3521 - Spiral Galaxy with Type Ic Supernova 2024aecx (non-detection)

NGC 4639 - Spiral Galaxy (UGC 7884)

NGC 4654 - Spiral Galaxy (H II 126)

NGC 5957 - Spiral Galaxy with Type Ia Supernova 2025fvw

SN 2024aeey - Type Ia Supernova

UGC 10058 - Spiral Galaxy with Type II Supernova 2025gvs

Variable Stars (photometric monitoring)

-T CrB

Nearby Stars (astrometric monitoring)

- None

- All-Night Session (x hr)

- 12" LX200 + ST-10XME for imaging

- TS 80mm APO + ZWO ASI178MC for guiding & imaging

- Ambient Temperature: x°C (min)

- CCD Temperature: -15°/-20°C

- Notes from 2025-04-22 >>

-

Observing Result

29P/Schwassmann-Wachmann - Comet

29P/Schwassmann-Wachmann - 2025-04-22 (passing through Leo) Sun Distance 6.27 AU Earth Distance 5.86 AU (876.5 million km)		29P/Schwassmann-Wachmann - 2025-04-22 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 0.61 arcsec/hr, Dec -0.48 arcsec/hr)

Annotated CCD Image (50% size, square root scale) 5 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-04-22 22:58 UT (#1316007-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (125% size, square root scale, cropped) Image details as left

Images of 29P/Schwassmann-Wachmann on Comets 2023 Page >>
Images of 29P/Schwassmann-Wachmann on Comets 2024 Page >>
Images of 29P/Schwassmann-Wachmann on Comets 2025 Page >>

C/2025 F2 (SWAN) - Comet (attempted observation)

C/2025 F2 (SWAN) - 2025-04-23 (passing through Triangulum) Sun Distance 041 AU (approaching) Earth Distance 1.04 AU (156.0 million km) Poor quality image (due to developing haar / poor sky transparency		C/2025 F2 (SWAN) - 2025-04-23 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 486.50 arcsec/hr, Dec 1.68 arcsec/hr) Poor quality image (due to developing haar / poor sky transparency

Annotated CCD Image (50% size, square root scale) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-04-23 02:57 UT (#1316098-99) 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) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-04-23 02:57 UT (#1316098-99) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of C/2025 F2 (SWAN) on Comets 2025 Page >>

2MFGC 13744 - Galaxy with Type II Supernova 2024afyu

2MFGC 13744 with SN 2024afyu (Ophiuchus)
SN 2024afyu (Type: II) discovered 2024-12-29.573 UT by ZTF
using Palomar 1.2m Oschin Telescope
Alias: ZTF24abzxalv
Discovery Magnitude 15.63 (r-ZTF Filter)
( TNS 2024afyu )

2MFGC 13744 with SN 2024afyu - 2025-04-23 (T+114.5d)
Image below (2025-04-23.097) was taken 114.5 days after discovery of 2024afyu
Position of reported supernova (distinct, fading) is shown by white cross-hairs
Measured Magnitude +15.39 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 02:28 UT (#1316083-87)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024afyu (in 2MFGC 13744) on Supernova 2024 Page >>

NGC 2744 - Spiral Galaxy with Type Ic Supernova 2025oq

NGC 2744 with SN 2025oq (Cancer)
SN 2025oq (Type: Ic) discovered 2025-01-17.024 UT by ATLAS
Alias: GOTO25io, ZTF25aaccmjq, ATLAS25als, BGEM J090438.41+182800.2
Discovery Magnitude 18.73 (L-GOTO Filter)
vs Prior Non-Detection Limiting Magnitude 18.6
( TNS 2024xav )

NGC 2744 with SN 2025oq - 2025-04-22 (T+96.0d)
Image below (2025-04-22.981) was taken 96.0 days after discovery of 2025oq
Position of reported supernova (faint) is shown by white cross-hairs
Estimated Magnitude +17.1 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-22 23:41 UT (#1316024-28)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025oq (in NGC 2744) on Supernovae 2025 Page >>

NGC 3277 - Spiral Galaxy with Type Ib-Ca-rich Supernova 2025coe

NGC 3277 with SN 2025coe (Leo Minor)
SN 2025coe (Type: Ib-Ca-rich) discovered 2025-02-24.634 UT by Koichi Itagaki
using 0.5-m F/6.9 Telescope
Alias: ATLAS25caa, ZTF25aahsvoc
Discovery Magnitude 17.4 (Clear Filter)
SN (z=0.00472) is suspected to be located in NGC 3277 (z=0.004720,
value from NED), but has a large offset.
( TNS 2025coe )

NGC 3277 with SN 2025coe - 2025-04-23 (T+57.4d)
Image below (2025-04-23.026) was taken 57.4 days after discovery of 2025coe
Position of reported supernova (faint) is shown by white cross-hairs
Measured Magnitude +18.60 (Clear Filter)
Offset from the centre of NGC 3277 is particularly large and
there is some doubt as whether the SN belongs to NGC 3277 or not

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 00:46 UT (#1316046-50)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3277 with SN 2025coe - Earlier Image, 2025-03-18 (T+22.2d)
Image below (2025-03-18.861) was taken 22.2 days after discovery of 2025coe
Position of reported supernova (faint) is shown by white cross-hairs
Measured Magnitude +17.06 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 20:48 UT (#1303005-09)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025coe (in NGC 3277) on Supernova 2025 Page >>

NGC 3521 - Spiral Galaxy with Type Ic Supernova 2024aecx (non-detection)

NGC 3521 with SN 2024aecx (Leo)
SN 2024aecx (Type: Ic) discovered 2024-12-16.557 UT by ATLAS
using ATLAS Haleakala Telescope
Alias: ATLAS24rkq, PS24msg, ZTF24abyaspl
Discovery Magnitude 14.54 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 18.56
( TNS 2024aecx )

NGC 3521 - Spiral Galaxy
Hidden Treasures 56
[ Hidden Treasures ]

Annotated CCD Image (100% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 01:10 UT (#1316055-58)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3521 with SN 2024aecx - 2025-04-23 (T+127.5d)
Image below (2025-04-23.043) was taken 127.5 days after discovery of 2024aecx
Position of reported supernova (not visible) is shown by white cross-hairs

Annotated CCD Image (150% size, log scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 01:10 UT (#1316055-58)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024aecx (in NGC 3521) on Supernova 2024 Page >>

NGC 4639 - Spiral Galaxy (UGC 7884)

NGC 4639 (Virgo)
Alias: UGC 7884,
Ast.Now Deep Sky Challenge, May 2025
Part of Spiral Galaxy Pair, NGC 4654 & NGC 4639
[ Deep Sky Challanges (Ast.Now) ]

Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 00:00 UT (#1316031-35)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4639 - Detail

Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 00:00 UT (#1316031-35)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4654 - Spiral Galaxy (H II 126)

NGC 4654 & NGC 4639 (Virgo)
Spiral Galaxy Pair NGC 4654 & NGC 4639
[ Deep Sky Challanges (Ast.Now) ]

Composite image showing relative positions of
NGC 4654 (left) and NGC 4639 (right)
Separation (17.5') was too large to get both galaxies
onto the same image frame

Annotated Composite CCD Image (27% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 00:00 UT (#1316031-35)
2025-04-23 00:23 UT (#1316039-43)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4654 (Virgo)
Alias: H II 126
Part of Spiral Galaxy Pair, NGC 4654 & NGC 4639
[ Herschel 400 Objects ]

Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 00:23 UT (#1316039-43)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 4654 - Detail

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 00:23 UT (#1316039-43)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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

NGC 5957 - Spiral Galaxy with Type Ia Supernova 2025fvw

NGC 5957 with SN 2025fvw (Serpens)
SN 2025fvw (Type: Ia) discovered 2025-03-26.799 UT by Koichi Itagaki
using XingLong Telescope
Alias: ZTF25aaktqzg, GOTO25bhh, PS25avu, ATLAS25dcd
Discovery Magnitude 17.4 (Clear Filter)
( TNS 2025fvw )

NGC 5957 with SN 2025fvw - 2025-04-22 (T+27.2d)
Image below (2025-04-22.967) was taken 27.2 days after discovery of 2025fvw
Position of reported supernova (distinct, but now fading) is shown by white cross-hairs
Measured Magnitude +14.31 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-22 23:20 UT (#1316017-21)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 5957 with SN 2025fvw - 2025-04-23 (T+27.3d)
Image below (2025-04-23.110) was taken 27.3 days after discovery of 2025fvw
Position of reported supernova (distinct, but now fading) is shown by white cross-hairs
Measured Magnitude +14.39 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 02:43 UT (#1316090-91)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2025fvw - Light Curve

Images of SN 2025fvw (in NGC 5957) on Supernova 2025 Page >>

SN 2024aeey - Type Ia Supernova

AT 2024aeey (Draco)
AT 2024aeey (Type: unk) discovered 2024-12-15.090 UT by Gaia
Alias: Gaia24dri, GOTO25fy, ATLAS25ake
Discovery Magnitude 15.56 (G-Gaia Filter)
Candidate SN near PanSTARRS galaxy
( TNS 2024aeey | Gaia24dri )

SN 2024aeey - 2025-04-23 (T+129.0d)
Image below (2025-04-23.073) was taken 129.0 days after discovery of 2024aeey
Position of earlier SN (faint) is shown by white cross-hairs
Measured Magnitude +18.24 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 01:54 UT (#1316068-72)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2024aeey on Supernova 2024 Page >>

UGC 10058 - Spiral Galaxy with Type II Supernova 2025gvs

UGC 10058 with SN 2025gvs (Corona Borealis)
SN 2025gvs (Type: II) discovered 2025-04-05.502 UT by ATLAS
Alias: ATLAS25dpm
Discovery magnitude 17.59 (cyan-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 17.7
( TNS 2025gvs)

UGC 10058 with SN 2025gvs - 2025-04-23 (T+17.6d)
Image below (2025-04-23.058) was taken 17.6 days after discovery of 2025gvs
Position of reported supernova (distinct, brighter) is shown by white cross-hairs
Measured Magnitude +15.66 (Clear Filter)

Annotated CCD Image (175% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-04-23 01:32 UT (#1316061-65)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025gvs (in UGC 10058) on Supernova 2025 Page >>

This Web Page:	Images - Session 1316 (2025-04-22)
Last Updated :	2025-04-29
Site Owner :	David Richards
Home Page :	David's Astronomy Web Site

David's Astronomy Pages Images - Session 1316 (2025-04-22)