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Images - Session 1313 (2025-04-09)
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29P/Schwassmann-Wachmann - Comet C/2025 F2 (SWAN) - Comet AT 2024evp - Transient AT 2024ger - Type YSO Transient AT 2024aapf - Type CV? Transient (non-detection) AT 2025lc - CV Type Transient AT 2025md - CV Type Transient, V1948 Cyg AT 2025ghv - Type CV? Transient AT 2025gnb - Transient (non-detection) AT 2025gsf - Transient LEDA 2155454 - Galaxy with Type Ia Supernova 2025erh LEDA 2243580 - Galaxy with Type Ia Supernova 2025gp MCG -3-35-3 - Spiral Galaxy with Type Ia Supernova 2023hjq (non-detection) NGC 5957 - Spiral Galaxy with Type Ia Supernova 2025fvw UGC 10058 - Spiral Galaxy with Type II Supernova 2025gvs Variable Stars (photometric monitoring) - SY Cnc, T CrB, SS Cyg, AM Her, BL Lac, ER UMa Nearby Stars (astrometric monitoring) - Barnards Star, 61 Cyg
- All-Night Session (7.4 hr) - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 0°C (min) - CCD Temperature: -20°C - Notes from 2025-04-09 >> -
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| 29P/Schwassmann-Wachmann - 2025-04-09 (passing through Leo) Sun Distance 6.27 AU (turning ?) Earth Distance 5.67 AU (848.4 million km) |
29P/Schwassmann-Wachmann - 2025-04-09 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -4.45 arcsec/hr, Dec 1.03 arcsec/hr) |
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| Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (median average combine), 3x3 binning, Clear Filter 2025-04-09 21:54 UT (#1313022-30) 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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| Stacked image using regular combine Image shows at least 11 satellite tracks crossing the FOV during the 13.5 minutes total exposure |
Stacked image using regular combine - Detail | |
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| Annotated CCD Image (50% size, square root scale) 9 x 90s exposure (maximum combine), 3x3 binning, Clear Filter 2025-04-09 21:54 UT (#1313022-30) 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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| C/2025 F2 (SWAN) - 2025-04-10 (passing through Pegasus) Sun Distance 0.67 AU (approaching) Earth Distance 1.35 AU (201.4 million km) |
C/2025 F2 (SWAN) - 2025-04-10 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 218.19 arcsec/hr, Dec 111.89 arcsec/hr) |
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| Annotated CCD Image (50% size, log scale) 60s exposure (single frame), 3x3 binning, Clear Filter 2025-04-10 03:27 UT (#1313182) 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) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 03:32 UT (#1313182-88) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2025 F2 (SWAN) - 2025-04-10, Movement Animated gif covering a 7 minute period showing relatively rapid movememt of come relative to background stars (Ra 218.19 arcsec/hr, Dec 111.89 arcsec/hr) |
C/2025 F2 (SWAN) - 2025-04-10 Detail Showing faint tail |
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| Annotated CCD Image (50% size, log scale) 7 x 60s frames 3x3 binning, Clear Filter 2025-04-10 03:27 to 03:36 UT (#1313182-88) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (70% size, log scale, cropped) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 03:32 UT (#1313182-88) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| C/2025 F2 (SWAN) - 2025-04-10, Wider View Image | C/2025 F2 (SWAN) - 2025-04-10, Wider View Image | |
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| Cam2 Reference Image (12% size, linear scale) 10s exposure, 1x1 binning 2025-04-10 03:23 UT (04:32 LT) TS 80mm + ZWO 174MC |
Cam2 Reference Image (12% size, linear scale) 10s exposure, 1x1 binning 2025-04-10 03:23 UT (04:32 LT) TS 80mm + ZWO 174MC |
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| Images of C/2025 F2 (SWAN) on Comets 2025 Page >> |
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AT 2024evp (Libra) |
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AT 2024evp - 2025-04-10 (T+383.7d) Image below (2025-04-10.031) was taken 383.7 days after discovery of 2024evp Position of earlier transient (faint) is shown by white cross-hairs Estimated Magnitude +16.8 (Clear Filter) Star is not separately distiguishable in SExtractor |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 00:54 UT (#1313088-92) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2024evp on Transients 2024 Page >> |
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AT 2024ger (Cygnus) AT 2024ger (Type: YSO) discovered 2024-04-02.736 UT by Gaia Alias: Gaia24beh Discovery Magnitude 15.57 (G-Gaia Filter) vs Historic Magnitude 16.69 +/- 0.43 SD Brightening in candidate YSO ( TNS 2024ger | Gaia24beh ) |
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AT 2024ger - 2025-04-09 (T+372.2d) Image below (2025-04-09.968) was taken 372.2 days after discovery of 2024ger Position of earlier transient (faint) is shown by white cross-hairs Measured Magnitude +15.98 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-09 23:23 UT (#1313060-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2024ger on Transients 2024 Page >> |
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AT 2024aapf (Lyra) AT 2024aapf (Type: CV?) discovered 2024-11-06.597 UT by XOSS Alias: KATS24V007, TCP J18362179+4019292 Discovery Magnitude 15.94 (Clear Filter) CV candidate classified by XOSS ( TNS 2024aapf ) |
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AT 2024aapf - 2025-04-10 (T+154.5d) Image below (2025-04-10.091) was taken 154.5 days after discovery of 2024aapf Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +19.5 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 02:19 UT (#1313134-37) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2024aapf on Transients 2024 Page >> |
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AT 2025lc (Cygnus) AT 2025lc (Type: CV) discovered 2025-01-10.553 UT by Gaia Alias: Gaia25add Alerting Magnitude 14.48 (G-Gaia Filter) vs Historic Magnitude 15.89 +/- 0.61 SD Outburst in candidate CV ( TNS 2025lc | Gaia25add ) |
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AT 2025lc - 2025-04-10 (T+89.6d) Image below (2025-04-10.126) was taken 89.6 days after discovery of 2025lc Position of earlier transient (very faint) is shown by white cross-hairs Estimated Magnitude +16.0 (Clear Filter) Star is in its low-state. |
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Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 03:05 UT (#1313163-67) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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AT 2025lc - Earlier Image, 2025-03-15 (T+63.5d) Image below (2025-03-15.080) was taken 63.5 days after discovery of 2025lc Position of earlier transient (faint) is shown by white cross-hairs Measured Magnitude +13.69 (Clear Filter) Appears to be either still be in outburst (from Jan 10th) or has started a new outburst. |
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Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-03-15 01:58 UT (#1301164-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2025lc on Transients 2025 Page >> |
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AT 2025md (Cygnus) AT 2025md (Type: CV) discovered 2025-01-12.882 UT by Gaia Alias: Gaia25adm, V1948 Cyg Alerting Magnitude 13.47 (G-Gaia Filter) vs Historic Magnitude 14.94 +/- 0.65 SD Outburst in known CV named V1948 Cyg ( TNS 2025md | Gaia25adm ) |
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AT 2025md - 2025-04-09 (T+87.1d) Image below (2025-04-09.962) was taken 87.1 days after discovery of 2025md Position of earlier transient (faint but distinct, brightening?) is shown by white cross-hairs Measured Magnitude +14.48 (Clear Filter) |
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Annotated CCD Image (150% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-04-09 23:08 UT (#1313052-56) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2025md / V1948 Cyg on Transients 2025 Page >> |
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| AT 2025ghv (Gemini) AT 2025ghv (Type: CV?) discovered 2025-03-31.589 UT by XOSS Alias: PSP25H, TCP J06455595+1210577 Discovery Magnitude 14.88 (Clear Filter) ( TNS 2025ghv ) |
| AT 2025ghv - 2025-04-09 (T+9.3d) Image below (2025-04-09.938) was taken 9.3 days after discovery of 2025ghv Position of reported transient (faint, fading) is shown by white cross-hairs Estimated Magnitude +16.8 (Clear Filter) |
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| Annotated CCD Image (175% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-09 22:40 UT (#1313040-44) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2025ghv on Transients 2025 Page >> |
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| AT 2025gnb (Gemini) AT 2025gnb (Type: unk) discovered 2025-04-02.782 UT by MASTER Alias: MASTER OT J074640.62+173413.1 Discovery Magnitude 16.20 (Clear Filter) vs Prior Non-Detection Limiting Magnitude 19.9 ( TNS 2025gnb ) |
| AT 2025gnb - 2025-04-09 (T+7.1d) Image below (2025-04-09.886) was taken 7.1 days after discovery of 2025gnb Position of reported transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.6 (Clear Filter) |
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| Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-09 21:26 UT (#1313009-13) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2025gnb on Transients 2025 Page >> |
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| AT 2025gsf (Canes Venatici) Alias: In WISEA J121839.40+470627.6 AT 2025gsf (Type: unk) discovered 2025-04-04.174 UT by GEOTS using 0.36-m f/2 astrograph telescope Alias: GEOTS-Balaji-2025-001, TCP J12183941+4706273 Discovery Magnitude 16.9 (Clear Filter) vs Prior Non-Detection Limiting Magnitude 17.8 ( TNS 2025gsf ) |
| AT 2025gsf - 2025-04-10 (T+5.8d) Image below (2025-04-10.000) was taken 5.8 days after discovery of 2025gsf Position of reported transient (faint) is shown by white cross-hairs Measured Magnitude +16.72 (Clear Filter) |
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| Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 00:09 UT (#1313073-77) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2025gsf on Transients 2025 Page >> |
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LEDA 2155454 with SN 2025erh (Lynx) |
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LEDA 2155454 with SN 2025erh - 2025-04-09 (T+23.7d) Image below (2025-04-09.922) was taken 23.7 days after discovery of 2025erh Position of reported supernova (faint, fading ?) is shown by white cross-hairs Measured Magnitude +16.08 (Clear Filter) |
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Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-09 22:16 UT (#1313033-37) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2025erh (in LEDA 2155454) on Supernova 2025 Page >> |
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LEDA 2243580 with AT 2025gp (Hercules) |
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LEDA 2243580 with SN 2025gp - 2025-04-09 (T+91.3d) Image below (2025-04-09.984) was taken 91.3 days after discovery of 2025gp Position of reported supernova (not separately distinguishable) is shown by white cross-hairs Measured Magnitude, Nucleus + SN +15.50 (Clear Filter) |
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Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-09 23:46 UT (#1313067-71) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2025gp (in LEDA 2243580) on Supernova 2025 Page >> |
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MCG -3-35-3 with SN 2023hjq (Virgo) |
| MCG -3-35-3 - Spiral Galaxy MCG -3-35-3 (alias PGC 47717, catalog mag +15.5) Adjacent galaxy is PGC 47721 (catalog mag +14.1) |
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Annotated CCD Image (50% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 00:31 UT (#1313081-85) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| MCG -3-35-3 - Detail |
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Annotated CCD Image (150% size, square root scale, cropped) Image details as above |
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MCG -3-35-3 with SN 2023hjq - 2025-04-10 (T+710.1d) Image below (2025-04-10.015) was taken 710.1 days after discovery of 2023hjq Position of earlier supernova (faded & no longer visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +15.50 (Clear Filter) |
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Annotated CCD Image (175% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 00:31 UT (#1313081-85) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2023hjq (in MCG -3-35-3) on Supernova 2023 Page >> |
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| 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 - 2025-04-10 (T+4.6d) Image below (2025-04-10.069) was taken 4.6 days after discovery of 2025gvs Position of reported supernova (distinct, brightening) is shown by white cross-hairs Measured Magnitude +15.86 (Clear Filter) |
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| Annotated CCD Image (175% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 01:47 UT (#1313110-13) 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 >> |
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NGC 5957 with SN 2025fvw (Serpens) |
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NGC 5957 with SN 2025fvw - 2025-04-10 (T+14.3d) Image below (2025-04-10.054) was taken 14.3 days after discovery of 2025fvw Position of reported supernova (distinct, brightening to peak) is shown by white cross-hairs Measured Magnitude +13.68 (Clear Filter) |
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Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-04-10 01:27 UT (#1313103-07) 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 1313 (2025-04-09) |
| Last Updated : | 2025-04-12 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
