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Images - Session 1418 (2026-04-09)
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Objects Session Notes
29P/Schwassmann-Wachmann - Comet Nova Ser 2025 - Nova AT 2026hur - Type CV? Transient IC 4556 - Elliptical Galaxy with Type Ia Supernova 2026fuz NGC 3689 - Spiral Galaxy with Type Ib Supernova 2026gwx NGC 3861 - Spiral Galaxy with Type II Supernova NGC 4205 - Spiral Galaxy with Type Ia Supernova 2026fvx NGC 4914 - Elliptical Galaxy with Type Ia Supernova 2026fjc PCG 1525+2956 - Compact Galaxy Group UGC 11058 - Spiral Galaxy with Type Ia Supernova 2026ewd - NGC 6070 attempt failed (due to cloud) Variable Stars (photometric monitoring) - T CrB, AM Her, CY Lyr Nearby Stars (astrometric monitoring) - HH And (Ross 248), Barnard's Star, 61 Cyg, Groombridge 34
- Late-Night Session (5.6 hr) - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 2°C (min) - CCD Temperature: -20°/-25°C - Notes from 2026-04-09 >> - -
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29P/Schwassmann-Wachmann - 2026-04-09 (passing through Leo) Sun Distance 6.31 AU Earth Distance 5.45 AU (814.6 million km) |
29P/Schwassmann-Wachmann - 2026-04-09 Detail
Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -11.7 arcsec/hr, Dec 5.3 arcsec/hr) Measured M2 Magnitude +16.05 (Clear Filter) |
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Annotated CCD Image (50% size, square root scale)
3 x 90s exposure (average combine), 3x3 binning, Clear Filter 2026-04-09 22:22 UT (#1418006-08) 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)
7 x 90s exposure (average combine), 3x3 binning, Clear Filter 2026-04-09 22:26 UT (#1418006-12) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of Comet_29P_Schwassmann-Wachmann on Comets 2026 Page >> | ||
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Nova Ser 2025 (Nova) (Serpens)
[ Novae ] |
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Nova Ser 2025 (Nova) (Serpens)
Alias: N Ser 2025, V691 Ser, TCP J18385851-0351482 Nova Ser 2025 (Type: Nova) discovered 2025-07-17.908 UT by New Milky Way Survey Position of earlier transient (faint) is shown by white cross-hairs Measured Magnitude +17.05 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-04-10 03:00 UT (#1418107-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of Nova Ser 2025 on Novae 2025 Page >> |
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AT 2026hur (Serpens)
AT 2026hur (Type: CV?) discovered 2026-03-29.850 UT by XOSS Alias: KATS26F005 Discovery Magnitude 15.81 (Clear- Filter) vs Prior Non-Detection Limiting Magnitude ( Filter) Cataclysmic variable candidate classified by XOSS. Details can be found at http://xjltp.china-vo.org/kats26f005.html ( TNS 2026hur ) |
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AT 2026hur - 2026-04-10 (T+11.2d)
Image below (2026-04-10.094) was taken 11.2 days after discovery of 2026hur Position of earlier transient (faint) is shown by white cross-hairs Measured Magnitude +16.79 (Clear Filter) |
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Annotated CCD Image (175% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-04-10 02:20 UT (#1418092-94) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2026hur on Transients 2026 Page >> |
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IC 4556 with SN 2026fuz (Serpens)
SN 2026fuz (Type: Ia) discovered 2026-03-15.132 UT by GOTO Alias: GOTO26cbv, ZTF26aalhcqv Discovery Magnitude 19.49 (L-GOTO Filter) vs Prior Non-Detection Limiting Magnitude 19.9 (L-GOTO Filter) ( TNS 2026fuz ) |
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IC 4556 with SN 2026fuz - 2026-04-10 (T+25.9d)
Image below (2026-04-10.077) was taken 25.9 days after discovery of 2026fuz Position of earlier supernova (faint) is shown by white cross-hairs Measured Magnitude +17.92 (Clear Filter) |
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Annotated CCD Image (125% size, square root scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter 2026-04-10 01:51 UT (#1418084) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2026fuz (in IC 4556) on Supernovae 2026 Page >> |
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NGC 3689 with SN 2026gwx (Leo)
SN 2026gwx (Type: Ib) discovered 2026-03-20.236 UT by ATLAS Alias: ZTF26aaodgsa Discovery Magnitude 20.8896 (r-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 20.921 (g-ZTF Filter) Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). ( TNS 2026gwx ) |
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NGC 3689 with SN 2026gwx - 2026-04-09 (T+20.7d)
Image below (2026-04-09.960) was taken 20.7 days after discovery of 2026gwx Position of earlier supernova (faint but distinct) is shown by white cross-hairs Measured Magnitude +14.68 (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 2026-04-09 23:10 UT (#1418024-28) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2026gwx (in NGC 3689) on Supernovae 2026 Page >> |
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NGC 3861 with AT 2026ihi (Leo)
SN 2026ihi (Type: unk) discovered 2026-04-04.401 UT by ATLAS Alias: ATLAS26dru Discovery Magnitude 18.182 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 18.41 (orange-ATLAS Filter) ( TNS 2026ihi ) [ Ring Galaxies ] |
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NGC 3861 - Spiral Galaxy
with several other galaxies in same field of view PGC 36610 (catalog mag +16.0), PGC 1613729 (catalog mag +16.8), PGC 36622 (catalog mag +17.2), , PGC 1613555 (catalog mag +17.5), PGC 1610890 (catalog mag +18.1) |
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Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-04-09 22:47 UT (#1418016-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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NGC 3861 - Detail
Ring Galaxy Catalogue |
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Annotated CCD Image (150% size, square root scale, cropped)
Image details as above |
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NGC 3861 with SN 2026ihi - 2026-04-09 (T+5.5d)
Image below (2026-04-09.943) was taken 5.5 days after discovery of SN 2026ihi Position of earlier transient (faint) is shown by white cross-hairs Estimated Magnitude +17.0 (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 2026-04-09 22:47 UT (#1418016-20) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| NGC 3861 - Earlier Image (Jan 2022), Pre-SN |
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CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter 2022-01-29 01:55 UT (#961082-86) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2026ihi on Transients 2026 Page >> |
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NGC 4205 with SN 2026fvx (Draco)
SN 2026fvx (Type: Ia) discovered 2026-03-17.986 UT by ATLAS Alias: ZTF26aamqluf, ATLAS26dgt Discovery Magnitude 19.46 (Clear- Filter) vs Prior Non-Detection Limiting Magnitude 19.97 (Clear- Filter) ( TNS 2026fvx ) |
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NGC 4205 with SN 2026fvx - 2026-04-09 (T+23.0d)
Image below (2026-04-09.974) was taken 23.0 days after discovery of 2026fvx Position of earlier supernova (distinct) is shown by white cross-hairs Measured Magnitude +12.48 (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 2026-04-09 23:31 UT (#1418031-35) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2026fvx (in NGC 4205) on Supernovae 2026 Page >> |
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NGC 4914 with SN 2026fjc (Canes Venatici)
SN 2026fjc (Type: Ia) discovered 2026-03-12.080 UT by ATLAS Alias: ATLAS26cwi, ZTF26aakqkpn, GOTO26ceh, WFST260310bkxqt Discovery Magnitude 18.475 (wide-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.35 (orange-ATLAS Filter) ( TNS 2026fjc ) |
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NGC 4914 with SN 2026fjc - 2026-04-09 (T+28.9d)
Image below (2026-04-09.990) was taken 28.9 days after discovery of 2026fjc Position of earlier supernova (distinct) is shown by white cross-hairs Measured Magnitude +14.47 (Clear Filter) |
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Annotated CCD Image (125% size, log scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-04-09 23:55 UT (#1418038-42) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2026fjc (in NGC 4914) on Supernovae 2026 Page >> |
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PCG 1525+2956 (Corona Borealis)
Palomar Compact Galaxy Catalogue, radius 27 arcsec, mag 15.1 [ PCG Groups ] |
| PCG 1525+2956 (Corona Borealis) |
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Annotated CCD Image (50% size, square root scale)
180s exposure (single frame), 3x3 binning, Clear Filter 2026-04-10 01:42 UT (#1418081) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| PCG 1525+2956 (Corona Borealis) |
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Annotated CCD Image (150% size, square root scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter 2026-04-10 01:42 UT (#1418081) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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UGC 11058 with SN 2026ewd (Hercules)
SN 2026ewd (Type: Ia) discovered 2026-03-05.583 UT by ATLAS Alias: ATLAS26cph, GOTO26bqj, ZTF26aajugdc Discovery Magnitude 17.346 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.52 (cyan-ATLAS Filter) ( TNS 2026ewd ) |
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UGC 11058 with SN 2026ewd - 2026-04-10 (T+35.4d)
Image below (2026-04-10.031) was taken 35.4 days after discovery of 2026ewd Position of earlier supernova (faint, fading) is shown by white cross-hairs Measured Magnitude +15.76 (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 2026-04-10 00:48 UT (#1418047-48) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2026ewd (in UGC 11058) on Supernovae 2026 Page >> |
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| This Web Page: | Images - Session 1418 (2026-04-09) |
| Last Updated : | 2026-05-28 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |