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Objects Session Notes
AT 2025kyb - CV Type Transient (non-detection) NGC 5957 - Spiral Galaxy with Type Ia Supernova 2025fvw Variable Stars (photometric monitoring) - T CrB, U Her Nearby Stars (astrometric monitoring) - 61 Cyg
- Post midnight session (1.5 hr). Short summer night - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature : 9.5°C (min) - CCD Temperature: -10°C - Notes from 2025-06-15 >> -
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AT 2025kyb (Hercules) |
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AT 2025kyb - 2025-06-16 (T+29.0d) Image below (2025-06-16.023) was taken 29.0 days after discovery of 2025kyb Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +17.8 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-06-16 00:34 UT (#1335046-47) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2025kyb on Transients 2025 Page >> |
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NGC 5957 with SN 2025fvw (Serpens) |
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NGC 5957 with SN 2025fvw - 2025-06-15 (T+81.2d) Image below (2025-06-15.992) was taken 81.2 days after discovery of 2025fvw Position of reported supernova (fading, faint) is shown by white cross-hairs Estimated Magnitude +16.5 (Clear Filter) Poor quality image (bright sky background, single frame) |
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Annotated CCD Image (125% size, square root scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2025-06-15 23:49 UT (#1335012) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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NGC 5957 with SN 2025fvw - Earlier Image, 2025-04-08 (T+12.2d) Image below (2025-04-08.051) was taken 12.2 days after discovery of 2025fvw Position of reported supernova (distinct, brightening, peak) is shown by white cross-hairs Measured Magnitude +13.70 (Clear Filter) |
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Annotated CCD Image (125% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-08 01:21 UT (#1312143-47) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| SN 2025fvw - Light Curve |
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| Images of SN 2025fvw (in NGC 5957) on Supernova 2025 Page >> |
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| This Web Page: | Images - Session 1335 (2025-06-15) |
| Last Updated : | 2025-06-27 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |