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Images - Session 1398 (2026-03-02)
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24P/Schaumasse - Comet C/2026 B2 (Sun-Gao) - Comet AT 2023tki - Type XRB Transient AT 2023xfi - Transient (non-detection) AT 2025lc - CV Type Transient AT 2025nda - Type CV? Transient AT 2025acse - CV Type Transient (non-detection) AT 2025acsf - Type CV? Transient AT 2026cpv - Type HPM Transient AT 2026dfh - Type CV? Transient M31 - Spiral Galaxy with Transient AT 2026gs (non-detection) MCG +7-4-9 - Galaxy with Type Ia Supernova 2026bss MCG +7-28-15 - Galaxy with Type II Supernova 2025adje MCG -3-34-59 - Galaxy with Type Ia Supernova 2023gb (non-detection) - 29P/Schwassmann-Wachmann attempt failed (due to bright moonlit sky) Variable Stars (photometric monitoring) - Z And, TV Cas, T CrB, SS Cyg, U Gem, AM Her, BL Lac, RR Leo, U Mon, KIC 8462852 (Tabby's Star) Nearby Stars (astrometric monitoring) - None
- Attempted All-Night Session (9.8 hr). Cold front came through at 21:00 to 22:30. wth brief period of cloud and strong wind which suspended operations. - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 2°C (min) - CCD Temperature: -15°/-20°C - Notes from 2026-03-02 >> - -
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24P/Schaumasse - 2026-03-03 (passing through Serpens) Sun Distance 1.38 AU Earth Distance 0.65 AU (96.7 million km) |
24P/Schaumasse - 2026-03-03 Detail
Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 23.1 arcsec/hr, Dec -8.7 arcsec/hr) |
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Annotated CCD Image (50% size, square root scale)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 01:41 UT (#1398157-59) 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)
8 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 01:44 UT (#1398157-64) 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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C/2026 B2 (Sun-Gao) - 2026-03-03 (passing through Pegasus) Sun Distance 1.49 AU Earth Distance 2.16 AU (323.1 million km) Not distinguishable (poor S/N ratio) |
C/2026 B2 (Sun-Gao) - 2026-03-03 Detail
Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 124.3 arcsec/hr, Dec 60.4 arcsec/hr) Poor quality image (poorS/N, bbright moonlit sky background) |
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Annotated CCD Image (50% size, square root scale)
14 x 90s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 04:18 UT (#1398228-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
Annotated CCD Image (100% size, square root scale, cropped)
14 x 90s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 04:18 UT (#1398228-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of C2026_B2_Sun-Gao on Comets 2026 Page >> | ||
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AT 2023tki (Scutum)
AT 2023tki (Type: XRB) discovered 2023-09-19.776 UT by Gaia Alias: Gaia23cnv Discovery Magnitude 11.49 (G-Gaia Filter) vs Prior Non-Detection Limiting Magnitude 21.5 (G-Gaia Filter) Gaia Alerting Magnitude 11.49 vs Historic Magnitude 11.94 +/- 0.07 SD ~0.5 mag rise in Gaia source, aka HMXRB ATO J278.3657-10.5901 ( TNS 2023tki | Gaia23cnv ) |
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AT 2023tki - 2026-03-03 (T+895.4d)
Image below (2026-03-03.218) was taken 895.4 days after discovery of 2023tki Position of earlier transient (distinct) is shown by white cross-hairs Measured Magnitude +11.94 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 05:23 UT (#1398268-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2023tki on Transients 2023 Page >> |
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AT 2023xfi (Ophiuchus)
AT 2023xfi (Type: unk) discovered 2023-11-03.135 UT by ZTF Alias: ZTF23aboeemv, Gaia23ddv Discovery Magnitude 16.13 (g-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 17.81 (r-ZTF Filter) Gaia Alerting Magnitude 18.07 Apparently hostless transient ( TNS 2023xfi | Gaia23ddv ) |
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AT 2023xfi - 2026-03-03 (T+851.0d)
Image below (2026-03-03.131) was taken 851.0 days after discovery of 2023xfi Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.3 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 03:17 UT (#1398206-10) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2023xfi on Transients 2023 Page >> |
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AT 2025lc (Cygnus)
AT 2025lc (Type: CV) discovered 2025-01-10.553 UT by Gaia Alias: Gaia25add Discovery Magnitude 14.48 (G-Gaia Filter) vs Prior Non-Detection Limiting Magnitude 21.5 (G-Gaia Filter) Gaia Alerting Magnitude 14.48 vs Historic Magnitude 15.89 +/- 0.61 SD Outburst in candidate CV ( TNS 2025lc | Gaia25add ) |
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AT 2025lc - 2026-03-03 (T+416.6d)
Image below (2026-03-03.162) was taken 416.6 days after discovery of 2025lc Position of earlier transient (faint) is shown by white cross-hairs Measured Magnitude +14.70 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 03:56 UT (#1398221-25) 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 2025nda (Hercules)
AT 2025nda (Type: CV?) discovered 2025-06-08.776 UT by XOSS Alias: KATS25L001, TCP J18345128+2209168 Discovery Magnitude 16.78 (Clear- Filter) vs Prior Non-Detection Limiting Magnitude ( Filter) CV candidate classified by XOSS. Details can be found at http://xjltp.china-vo.org/kats25l001.html ( TNS 2025nda ) |
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AT 2025nda - 2026-03-03 (T+267.4d)
Image below (2026-03-03.149) was taken 267.4 days after discovery of 2025nda Position of earlier transient (very faint) is shown by white cross-hairs Measured Magnitude +16.73 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 03:41 UT (#1398215-18) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2025nda on Transients 2025 Page >> |
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AT 2025acse (Cygnus)
AT 2025acse (Type: CV) discovered 2025-11-07.647 UT by XOSS Alias: KATS25V004, TCP J21314718+3825463 Discovery Magnitude 14.7 (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/kats25v004.html ( TNS 2025acse ) |
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AT 2025acse - 2026-03-03 (T+115.4d)
Image below (2026-03-03.088) was taken 115.4 days after discovery of 2025acse Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +17.6 (Clear Filter) Poor quality image (poor seeing) |
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Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 02:15 UT (#1398176-80) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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AT 2025acse - Earlier Image, 2025-11-28 (T+21.3d)
Image below (2025-11-28.975) was taken 21.3 days after discovery of 2025acse Position of reported transient (very 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 2025-11-28 23:33 UT (#1380028-32) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2025acse on Transients 2025 Page >> |
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AT 2025acsf (Lacerta)
AT 2025acsf (Type: CV?) discovered 2025-11-07.681 UT by XOSS Alias: KATS25V005, TCP J22003659+4128383 Discovery Magnitude 16.87 (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/kats25v005.html ( TNS 2025acsf ) |
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AT 2025acsf - 2026-03-03 (T+115.5d)
Image below (2026-03-03.203) was taken 115.5 days after discovery of 2025acsf Position of earlier transient (faint) is shown by white cross-hairs Measured Magnitude +17.27 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 05:00 UT (#1398261-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2025acsf on Transients 2025 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 - 2026-03-03 (T+21.6d)
Image below (2026-03-03.111) was taken 21.6 days after discovery of 2026cpv Position of earlier transient (faint but distinctt) is shown by white cross-hairs Measured Magnitude +15.65 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
14 x 90s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 02:52 UT (#1398189-202) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2026cpv on Transients 2026 Page >> |
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AT 2026dfh (Canis Minor)
AT 2026dfh (Type: CV?) discovered 2026-02-11.762 UT by XOSS Alias: KATS26C007 Discovery Magnitude 16.63 (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/kats26c007.html ( TNS 2026dfh ) |
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AT 2026dfh - 2026-03-02 (T+19.2d)
Image below (2026-03-02.917) was taken 19.2 days after discovery of 2026dfh Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +16.7 (Clear Filter) Poor quality image (bright moonlit sky background, single frame) |
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Annotated CCD Image (100% size, linear scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter 2026-03-02 22:01 UT (#1398043) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2026dfh on Transients 2026 Page >> |
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M31 with AT 2026gs (Andromeda)
AT 2026gs (Type: unk) discovered 2026-01-08.786 UT by Jingyuan Zhao Alias: PNV J00425201+4114292 Discovery Magnitude 18.37 (Clear- Filter) vs Prior Non-Detection Limiting Magnitude ( Filter) Jianlin Xu, Jingyuan Zhao, Mi Zhang report discovery of a possible nova in M31. Image obtained by 0.43-m f/6.8 Corrected Dall-Kirkham robotic telescope at Alnitak Remote Observatories in Nerpio, Spain, exposured 200s with Clear filter, around 2026 Jan. 08.78633 UT, mag = 18.37 CV. Observations were made using Alnitak Remote Observatories robotic telescope network, Alnitak Research Telescope Access (ARTA) program. ( TNS 2026gs ) |
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M31 with AT 2026gs - Reference Image
Position of AT 2026gs (not visible in this exposure) is shown by blue circle Limits of M31 Spiral Galaxy is shown by pale cyan ellipse |
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Annotated CMOS Image (16% size)
10s exposure, 1x1 binning 2026-03-02 20:26 UT TS 80mm APO, ZWO ASI178MC |
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M31 with AT 2026gs - 2026-03-02 (T+53.1d)
Image below (2026-03-02.852) was taken 53.1 days after discovery of 2026gs |
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Annotated CCD Image (70% size, square root scale)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-02 20:32 UT (#1398031-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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M31 with AT 2026gs - 2026-03-02 (T+53.1d)
Image below (2026-03-02.852) was taken 53.1 days after discovery of 2026gs Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +16.5 (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 2026-03-02 20:32 UT (#1398031-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2026gs on Transients 2026 Page >> |
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MCG +7-4-9 with SN 2026bss (Andromeda)
SN 2026bss (Type: Ia) discovered 2026-01-29.319 UT by ATLAS Alias: ATLAS26bfu, ZTF26aaegaze, GOTO26ahd Discovery Magnitude 18.232 (orange-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.08 (wide-ATLAS Filter) ( TNS 2026bss ) |
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MCG +7-4-9 - Elliptical Galaxy
Alias: PGC 6269 (catalog mag +15.7) |
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Annotated CCD Image (50% size, square root scale)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-02 20:02 UT (#1398007-09) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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MCG +7-4-9 with SN 2026bss - 2026-03-02 (T+32.5d)
Image below (2026-03-02.831) was taken 32.5 days after discovery of 2026bss Position of earlier supernova (faint) is shown by white cross-hairs Estimated Magnitude +17.8 (Clear Filter) |
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Annotated CCD Image (150% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-02 20:02 UT (#1398007-09) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2026bss (in MCG +7-4-9) on Supernovae 2026 Page >> |
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MCG +7-28-15 with SN 2025adje (Canes Venatici)
SN 2025adje (Type: II) discovered 2025-11-14.510 UT by ASAS-SN Alias: ASASSN-25et, ZTF25acegldm, ATLAS25owo, GOTO25lal Discovery Magnitude 14.7 (g-Sloan Filter) vs Prior Non-Detection Limiting Magnitude 17.2 (g-Sloan Filter) Present in two epochs, unknown redshift host galaxy, discovered after seasonal break ( TNS 2025adje ) |
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MCG +7-28-15 with SN 2025adje - 2026-03-02 (T+108.5d)
Image below (2026-03-02.992) was taken 108.5 days after discovery of 2025adje Position of earlier supernova (faint) is shown by white cross-hairs Estimated Magnitude +16.5 (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 2026-03-02 23:57 UT (#1398103-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2025adje (in MCG +7-28-15) on Supernovae 2025 Page >> |
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MCG -3-34-59 with SN 2023gb (Virgo)
SN 2023gb (Type: Ia) discovered 2023-01-12.502 UT by ZTF Alias: ZTF23aaahtsu, ATLAS23aiu Discovery Magnitude 16.35 (r-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 19.66 (g-ZTF Filter) ( TNS 2023gb ) |
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MCG -3-34-59 with SN 2023gb - 2026-03-03 (T+1145.6d)
Image below (2026-03-03.053) was taken 1145.6 days after discovery of 2023gb Position of earlier supernova (not visible) is shown by white cross-hairs Very poor quality image (bright moonlit sky background) |
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Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-03-03 01:24 UT (#1398149-53) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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MCG -3-34-59 & MCG -3-34-60 - Earlier Image, 2024-02-24
MCG -3-34-59 (alias: PGC 46660, catalog mag 16.0) MCG -3-34-60 (alias: PGC 46659, catalog mag 14.6) |
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Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2024-02-24 04:01 UT (#1190231-35) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| This Web Page: | Images - Session 1398 (2026-03-02) |
| Last Updated : | 2026-03-04 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |