David's Astronomy Pages Images - Session 1327 (2025-05-14)

Images (S1326)

Images Main

Home Page

Images (S1328)

Objects

Session Notes

29P/Schwassmann-Wachmann - Comet     AT 2025lc - CV Type Transient AT 2025md - CV Type Transient, V1948 Cyg AT 2025kej - CV Type Transient     IC 4408 - Spiral Galaxy with Type Ia Supernova 2025kfm M31 - Spiral Galaxy with Transient AT 2025keh  (non-detection) M31 - Spiral Galaxy with Transient AT 2025kit  (non-detection)     UGC 12131 - Spiral Galaxy with Supernova 2025jyl     Variable Stars (photometric monitoring) - T CrB, AM CVn, AM Her, BL Lac     Nearby Stars (astrometric monitoring) - Barnards Star

- All-night session (3.6 hr)     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature : 8.5°C (min) - CCD Temperature: -15°C - Notes from 2025-05-16 >>     - Aurora Images from 2025-05-16 / 2025-05-17  >>

Observing Result

Back to Top

29P/Schwassmann-Wachmann - Comet

29P/Schwassmann-Wachmann - 2025-05-16 (passing through Leo) Sun Distance 6.28 AU (receeding slowly) Earth Distance 6.24 AU (933.2 million km) Comet is confirmed to be having a new outburst Measured Magnitude +14.24 (Clear Filter)		29P/Schwassmann-Wachmann - 2025-05-16 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 9.34 arcsec/hr, Dec -3.32 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-05-16 22:52 UT (#1327007-15) 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 >>

Back to Top

AT 2025lc - CV Type Transient

Back to Top

AT 2025md - CV Type Transient, V1948 Cyg

Back to Top

AT 2025kej - CV Type Transient

Back to Top

IC 4408 - Spiral Galaxy with Type Ia Supernova 2025kfm

Back to Top

M31 - Spiral Galaxy with Transient AT 2025keh  (non-detection)

M31 with AT 2025keh (Andromeda) AT 2025keh (Type: unk) discovered 2025-05-07.883 UT by XOSS Alias: PAT17X2501, PNV J00414774+4112048 Discovery Magnitude 18.87 (Clear Filter) ( TNS 2025keh )

M31 -Spiral Galaxy with AT 2025keh - 2025-05-17 (T+9.1d) Cam2 Reference Image Position of AT 2025keh (not visible in this exposure) is shown by blue circle Limits of M31 Spiral Galaxy is shown by white ellipse

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2025-05-17 00:44 UT TS 80mm APO, ZWO ASI178MC

M31 with AT 2025keh - 2025-05-17 (T+9.1d) Transient position (not distinguishable) is shown by white circle

Annotated CCD Image (70% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-05-17 00:54 UT (#1327064-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025keh - 2025-05-17 (T+9.1d) Image below (2025-05-17.031) was taken 9.1 days after discovery of 2025keh Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-05-17 00:54 UT (#1327064-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2025keh (in M31) on Transients 2025 Page >>

Back to Top

M31 - Spiral Galaxy with Transient AT 2025kit  (non-detection)

M31 with AT 2025kit (Andromeda) AT 2025kit (Type: unk) discovered 2025-05-08.488 UT by ZTF using Palomar 1.2m Oschin Telescope Alias: ZTF25aapsjcy Discovery Magnitude 17.79 (Clear Filter) ( TNS 2025kit )

M31 -Spiral Galaxy with AT 2025keh - 2025-05-17 (T+9.1d) Cam2 Reference Image Position of AT 2025kit (not visible in this exposure) is shown by blue circle Limits of M31 Spiral Galaxy is shown by white ellipse (extreme bottom right)

Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2025-05-17 01:06 UT TS 80mm APO, ZWO ASI178MC

M31 with AT 2025kit - 2025-05-17 (T+8.6d) Transient position (not distinguishable) is shown by white circle

Annotated CCD Image (70% size, square root scale) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-05-17 01:15 UT (#1327071-75) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

M31 with AT 2025kit - 2025-05-17 (T+8.6d) Image below (2025-05-17.047) was taken 8.6 days after discovery of 2025kit Position of reported transient (not visible) is shown by white cross-hairs

Annotated CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-05-17 01:15 UT (#1327071-75) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2025kit (in M31) on Transients 2025 Page >>

Back to Top

UGC 12131 - Spiral Galaxy with Supernova 2025jyl

Back to Top