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Images - Session 1369 (2025-10-20)
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29P/Schwassmann-Wachmann - Comet M31N 2025-10a? - Extragalactic Nova in M31 UGC 3458 - Spiral Galaxy with Type II Supernova 2025yao - UGC 5695 w/SN2025cfc attempt failed (due to cloud) Realtime Pictures from Current/Latest Session >> Variable Stars (photometric monitoring) - CY Lyr Nearby Stars (astrometric monitoring) - HH And - Gilese 65 attempt failed (due to cloud)
- All-night session (7.1 hr) frequently interrupted by cloud - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 9.5°C (min) - CCD Temperature: -10°/-15°C - Notes from 2025-10-20 >>
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| 29P/Schwassmann-Wachmann - 2025-10-21 (passing through Leo) Sun Distance 6.30 AU (receeding slowly) Earth Distance 7.03 AU (1052.0 million km) Poor quality image |
29P/Schwassmann-Wachmann - 2025-10-21 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 21.43 arcsec/hr, Dec -11.34 arcsec/hr) Uncertain identification |
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| Annotated CCD Image (50% size, square root scale) 8 x 90s exposure (average combine), 3x3 binning, Clear Filter 2025-10-21 05:33 UT (#1369062-69) 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 |
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| 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 >> |
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M31N 2025-10a? (Andromeda) |
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M31 - Spiral Galaxy with M31N 2025-10a? (T+3.6d) Cam2 Reference Image Position of M31N 2025-10a? (T+3.6d) (not visible in this wide view image) is shown by blue circle Limits of M31 Spiral Galaxy is shown by pale blue ellipse |
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| Annotated CMOS Image (16% size) (10s exposure, 1x1 binning) 2025-10-21 02:37 UT TS 80mm APO, ZWO ASI178MC |
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M31N 2025-10a? - 2025-10-21 (T+3.6d) Image below (2025-10-21.113) was taken 3.6 days after discovery of M31N 2025-10a? Position of Transient (faint) is shown by white cross-hairs |
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Annotated CCD Image (70% size, square root scale) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-10-21 02:47 UT (#1369040-42) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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M31N 2025-10a? - 2025-10-21 (T+3.6d) Image below (2025-10-21.113) was taken 3.6 days after discovery of M31N 2025-10a? Position of reported transient (faint but distinct) is shown by white cross-hairs Measured Magnitude +16.38 (Clear Filter) |
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Annotated CCD Image (125% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-10-21 02:47 UT (#1369040-42) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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M31N 2025-10a? - Reference Image Position of M31N 2025-10a? is shown by purple cross-hairs |
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| DSS2 Color Image (captured in Aladin) |
| Images of M31N 2025-10a? (in M31) on Transients 2025 Page >> |
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| NGC 7753 with SN 2025kyg (Pegasus) SN 2025kyg (Type: Ia) discovered 2025-05-21.430 UT by ATLAS using Palomar 1.2m Oschin Telescope Alias: ATLAS25fee, ZTF25aaqhnsd, GOTO25dby Discovery Magnitude 15.72 (r-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 18.25 ( TNS 2025kyg ) |
| NGC 7753 with SN 2025kyg - 2025-10-21 (T+152.7d) Image below (2025-10-21.106) was taken 152.7 days after discovery of 2025kyg Position of reported supernova (not visible) is shown by white cross-hairs Non-Detection Magnitude +17.9 (Clear Filter) vs Prior Estimated Magnitude +18.3 (Clear Filter, 2025-08-31) Poor quality Image (single frame / cloud, poor guiding) |
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| Annotated CCD Image (125% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2025-10-21 02:32 UT (#1369038) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 7753 with SN 2025kyg - Earlier Image, 2025-08-17 (T+87.6d) Image below (2025-08-17.061) was taken 87.6 days after discovery of 2025kyg Position of reported supernova (faint) is shown by white cross-hairs Estimated Magnitude +17.8 (Clear Filter) |
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| Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-08-17 01:35 UT (#1350087-91) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2025kyg (in NGC 7753) on Supernova 2025 Page >> |
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| UGC 3458 with SN 2025yao (Camelopardalis) SN 2025yao (Type: II) discovered 2025-09-20.446 UT by ZTF using Palomar 1.2m Oschin Telescope Alias: ZTF25absindv Discovery Magnitude 18.37 (r-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 20.32 ( TNS 2025yao ) |
| UGC 3458 with SN 2025yao - 2025-10-21 (T+30.7d) Image below (2025-10-21.172) was taken 30.7 days after discovery of 2025yao Position of reported supernova (not visible) is shown by white cross-hairs |
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| Annotated CCD Image (50% size, square root scale) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-10-21 04:10 UT (#1369047-48) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| UGC 3458 with SN 2025yao - 2025-10-21 (T+30.7d) Image below (2025-10-21.172) was taken 30.7 days after discovery of 2025yao Position of reported supernova (faint) is shown by white cross-hairs Measured Magnitude +16.39 (Clear Filter) |
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| Annotated CCD Image (150% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-10-21 04:10 UT (#1369047-48) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2025yao (in UGC 3458) on Supernova 2025 Page >> |
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| This Web Page: | Images - Session 1369 (2025-10-20) |
| Last Updated : | 2025-12-19 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
