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Images - Session 1411 (2026-03-27)
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Objects Session Notes
24P/Schaumasse - Comet 29P/Schwassmann-Wachmann - Comet AT 2026cpv - Type HPM Transient AT 2026cqc - CV Type Transient AT 2026gzl - Type CV? Transient NGC 3660 - Spiral Galaxy with Type II Supernova 2026cff NGC 4914 - Elliptical Galaxy with Type Ia Supernova 2026fjc NGC 6070 - Spiral Galaxy with Type II Supernova 2026ejy UGC 8457 - Spiral Galaxy with Transient AT 2026gua UGC 11058 - Spiral Galaxy with Type Ia Supernova 2026ewd Variable Stars (photometric monitoring) - T CrB, AM Her, SS Her, U Her Nearby Stars (astrometric monitoring) - None
- Attempted All-Night Session (5.3 hr), start delayed by software issues (requiring reinstallation of CCDSoft), and ended early due to cloud and increasing wind. - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 1.5°C (min) - CCD Temperature: -20°/-25°C - Notes from 2026-03-27 >> - - Aurora Video from 2026-03-27 / 2026-03-28 >> >>
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24P/Schaumasse - 2026-03-27 (passing through Serpens) Sun Distance 1.55 AU Earth Distance 0.68 AU (101.4 million km) |
24P/Schaumasse - 2026-03-27 Detail
Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -30.9 arcsec/hr, Dec -9.0 arcsec/hr) |
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Annotated CCD Image (50% size, square root scale)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-03-27 23:30 UT (#1411042-44) 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 60s exposure (average combine), 3x3 binning, Clear Filter 2026-03-27 23:33 UT (#1411042-49) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of Comet_24P_Schaumasse on Comets 2026 Page >> | ||
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29P/Schwassmann-Wachmann - 2026-03-27 (passing through Leo) Sun Distance 6.31 AU Earth Distance 5.36 AU (801.9 million km) |
29P/Schwassmann-Wachmann - 2026-03-27 Detail
Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -14.7 arcsec/hr, Dec 5.8 arcsec/hr) Measured M2 Magnitude +16.12 (Clear Filter) |
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Annotated CCD Image (50% size, square root scale)
3 x 90s exposure (average combine), 3x3 binning, Clear Filter 2026-03-27 22:20 UT (#1411019-21) 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 2026-03-27 22:23 UT (#1411019-25) 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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AT 2026cpv (Cygnus)
AT 2026cpv (Type: HPM) discovered 2026-02-09.508 UT by MASTER Alias: MASTER OT J192256.61+460501.0 Discovery Magnitude 15.8 (Other- Filter) vs Prior Non-Detection Limiting Magnitude 19.7 (Other- Filter) star with proper motion and with 0.3mag variability per 1 hour ( TNS 2026cpv ) |
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AT 2026cpv - 2026-03-28 (T+46.6d)
Image below (2026-03-28.086) was taken 46.6 days after discovery of 2026cpv Position of earlier transient (faint) is shown by white cross-hairs Measured Magnitude +15.59 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
4 x 90s exposure (average combine), 3x3 binning, Clear Filter 2026-03-28 02:09 UT (#1411121-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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AT 2026cpv - Reference Stars
Image below (2026-03-28.086) was taken 46.6 days after discovery of 2026cpv C Star : GSC 3543:1416 (mag 11.7),, new Alt C GSC 3543:2360 13.5 K Star : GSC 3543:228 GSC 3543:1470 (V Mag 10.14) was initialy used as the Comparison Star, but was found unsuitable, as it was found to either being itself variable or was subject to raw magnitude measurement error due to CCD saturation. |
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Annotated CCD Image (70% size, linear scale)
25 x 90s exposure (average combine), 3x3 binning, Clear Filter 2026-03-28 02:26 UT (#1411121-45) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of AT 2026cpv on Transients 2026 Page >> |
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AT 2026cqc (Cygnus)
AT 2026cqc (Type: CV) discovered 2026-02-09.526 UT by MASTER Alias: MASTER OT J191527.78+542418.1 Discovery Magnitude 16.4 (Other- Filter) vs Prior Non-Detection Limiting Magnitude 17.8 (Other- Filter) variable star, no OT at 2023-07-03 06:33:19 with mlim=17.8 ( TNS 2026cqc ) |
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AT 2026cqc - 2026-03-28 (T+46.5d)
Image below (2026-03-28.067) was taken 46.5 days after discovery of 2026cqc Position of earlier transient (very faint) is shown by white cross-hairs Estimated Magnitude +16.7 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-03-28 01:39 UT (#1411114-18) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2026cqc on Transients 2026 Page >> |
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AT 2026gzl (Ophiuchus)
AT 2026gzl (Type: CV?) discovered 2026-03-23.166 UT by jiashuo Zhang Alias: STSP J173452.99+060429.9 Discovery Magnitude 16.34 (Clear- Filter) vs Prior Non-Detection Limiting Magnitude ( Filter) Group reports the discovery of a candidate dwarf nova. ( TNS 2026gzl ) |
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AT 2026gzl - 2026-03-28 (T+4.9d)
Image below (2026-03-28.051) was taken 4.9 days after discovery of 2026gzl Position of earlier transient (very faint) is shown by white cross-hairs Measured Magnitude +16.99 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-28 01:22 UT (#1411107-11) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2026gzl on Transients 2026 Page >> |
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NGC 3660 with SN 2026cff (Crater)
SN 2026cff (Type: II) discovered 2026-02-06.337 UT by ATLAS Alias: ZTF26aaffpvx, ATLAS26bkl, GOTO26anl Discovery Magnitude 17.0032 (r-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 18.9768 (r-ZTF Filter) Early SN candidate (r-rise > 0.51+-0.01 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF26aaffpvx ( TNS 2026cff ) |
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NGC 3660 with SN 2026cff - 2026-03-27 (T+49.6d)
Image below (2026-03-27.912) was taken 49.6 days after discovery of 2026cff Position of earlier supernova (faint) is shown by white cross-hairs Estimated Magnitude +15.7 (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 2026-03-27 22:00 UT (#1411013-16) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2026cff (in NGC 3660) 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 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 - 2026-03-27 (T+15.9d)
Image below (2026-03-27.962) was taken 15.9 days after discovery of 2026fjc Position of earlier supernova (distinct) is shown by white cross-hairs Measured Magnitude +14.12 (Clear Filter) |
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Annotated CCD Image (125% size, log scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-27 23:14 UT (#1411035-39) 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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NGC 6070 with SN 2026ejy (Serpens)
SN 2026ejy (Type: II) discovered 2026-02-25.180 UT by ATLAS Alias: GOTO26bnq, ZTF26aaiedvz, ATLAS26coa, BGEM J161000.25+004220.7 Discovery Magnitude 18.55 (L-GOTO Filter) vs Prior Non-Detection Limiting Magnitude 20.4 (L-GOTO Filter) ( TNS 2026ejy ) |
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NGC 6070 with SN 2026ejy - 2026-03-28 (T+30.8d)
Image below (2026-03-28.028) was taken 30.8 days after discovery of 2026ejy Position of earlier supernova (faint) is shown by white cross-hairs Estimated Magnitude +16.0 (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 2026-03-28 00:50 UT (#1411091-95) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2026ejy (in NGC 6070) on Supernovae 2026 Page >> |
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UGC 8457 with AT 2026gua (Coma Berenices)
AT 2026gua (Type: unk) discovered 2026-03-14.955 UT by Tomasz ÅciÄżor Discovery Magnitude 16.52 (Clear- Filter) vs Prior Non-Detection Limiting Magnitude ( Filter) ( TNS 2026gua ) |
| UGC 8457 - Spiral Galaxy |
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Annotated CCD Image (50% size, square root scale)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-27 22:51 UT (#1411029-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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UGC 8457 with AT 2026gua - 2026-03-27 (T+13.0d)
Image below (2026-03-27.947) was taken 13.0 days after discovery of 2026gua Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +19.4 (Clear Filter) |
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Annotated CCD Image (150% size, square root scale, cropped)
Image details as above |
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UGC 8457 with AT 2026gua - 2026-03-27 (T+13.0d)
Image below (2026-03-27.947) was taken 13.0 days after discovery of 2026gua |
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Annotated CCD Image (150% size, square root scale, cropped)
Image details as above |
| Images of AT 2026gua on Transients 2026 Page >> |
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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 - 2026-03-28 (T+22.4d)
Image below (2026-03-28.006) was taken 22.4 days after discovery of 2026ewd Position of earlier supernova (distinct) is shown by white cross-hairs Measured Magnitude +15.31 (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 2026-03-28 00:17 UT (#1411075-79) 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 1411 (2026-03-27) |
| Last Updated : | 2026-05-22 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |
