David's Astronomy - Images 2025-05-14 (S1325)

David's Astronomy Pages
Images - Session 1325 (2025-05-14)

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Objects Session Notes

AT 2025kej - CV Type Transient

IC 4408 - Spiral Galaxy with Type Ia Supernova 2025kfm

NGC 5957 - Spiral Galaxy with Type Ia Supernova 2025fvw

SN 2024aeey - Type Ia Supernova

UGC 12131 - Spiral Galaxy with Supernova 2025jyl

Variable Stars (photometric monitoring)

- T CrB, BL Lac, CY Lyr

Nearby Stars (astrometric monitoring)

- 61 Cyg

- Attempted all-night session (3.7 hr)

- 12" LX200 + ST-10XME for imaging

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

- Ambient Temperature : 6°C (min)

- CCD Temperature: -15°/-20°C

- Notes from 2025-05-14 >>

-

Observing Result

AT 2025kej - CV Type Transient

AT 2025kej (Lyra)
AT 2025kej (Type: CV) discovered 2025-05-07.765 UT by XOSS
Alias: EAST25J001, TCP J18150814+4121534
Discovery Magnitude 14.54 (Clear Filter)
( TNS 2025kej )

AT 2025kej - 2025-05-15 (T+7.3d)
Image below (2025-05-15.054) was taken 7.3 days after discovery of 2025kej
Position of reported transient (faint, fading) is shown by white cross-hairs
Measured Magnitude +15.63 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 90s exposure (average combine), 3x3 binning, Clear Filter
2025-05-15 01:23 UT (#1325117-21)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2025kej on Transients 2025 Page >>

IC 4408 - Spiral Galaxy with Type Ia Supernova 2025kfm

IC 4408 with SN 2025kfm (Bootes)
SN 2025kfm (Type: Ia) discovered 2025-05-09.394 UT by ATLAS
using ATLAS Mauna Loa Telescope
Alias: ATLAS25ewy
Discovery Magnitude 18.44 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.10
( TNS 2025kfm )

IC 4408 - Spiral Galaxy with SN 2025kfm (T+5.7d)

Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-15 02:00 UT (#1325140-44)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

IC 4408 with SN 2025kfm - 2025-05-15 (T+5.7d)
Image below (2025-05-15.077) was taken 5.7 days after discovery of 2025kfm
Position of reported supernova (faint) is shown by white cross-hairs
Measured Magnitude +15.59 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-15 02:00 UT (#1325140-44)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025kfm (in IC 4408) on Supernova 2025 Page >>

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 - 2025-05-15 (T+49.2d)
Image below (2025-05-15.038) was taken 49.2 days after discovery of 2025fvw
Position of reported supernova (still distinct, but fading) is shown by white cross-hairs
Measured Magnitude +15.59 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-15 01:04 UT (#1325109-13)
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 - 2025-05-14 (T+150.9d)
Image below (2025-05-14.990) was taken 150.9 days after discovery of 2024aeey
Position of reported supernova (very faint, fading) is shown by white cross-hairs
Measured Magnitude +18.56 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-14 23:54 UT (#1325081-85)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

SN 2024aeey - Earlier Image, 2024-12-24 (T+9.7d)
Image below (2024-12-24.831) was taken 9.7 days after discovery of 2024aeey
Position of reported supernova (distinct) is shown by white cross-hairs
Measured Magnitude +15.62 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-12-24 20:05 UT (#1287045-49)
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 12131 - Spiral Galaxy with Supernova 2025jyl

UGC 12131 with SN 2025jyl (Lacerta)
2025jyl (Type: SN) discovered 2025-05-07.493 UT by ZTF
using Palomar 1.2m Oschin Telescope
Alias: ZTF25aappymi
Discovery Magnitude 18.09 (r-ZTF Filter)
vs Prior Non-Detection Limiting Magnitude 20.44
( TNS 2025jyl )

UGC 12131 with SN 2025jyl - 2025-05-15 (T+7.5d)
Image below (2025-05-15.013) was taken 7.5 days after discovery of 2025jyl
Position of reported supernova (faint) is shown by white cross-hairs
Estimated Magnitude +17.6 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-05-15 00:27 UT (#1325094-98)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025jyl (in UGC 12131) on Supernova 2025 Page >>

This Web Page:	Images - Session 1325 (2025-05-14)
Last Updated :	2025-05-26
Site Owner :	David Richards
Home Page :	David's Astronomy Web Site