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Images - Session 1394 (2026-02-17)
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Objects Session Notes
29P/Schwassmann-Wachmann - Comet 240P/NEAT - Comet C/2022 N2 (PANSTARRS) - Comet Nova Per 2020 - Nova AT 2025afsx - Transient (non-detection) AT 2026coj - CV Type Transient NGC 2398 - Spiral Galaxy with CV Type Transient AT2026cex NGC 3660 - Spiral Galaxy with Type II Supernova 2026cff UGCA 170 - Spiral Galaxy (PGC 27430) UGCA 200 - Irregular Galaxy (PGC 29299) (non-detection) Z 160-45 - Galaxy with Type Ia Supernova 2025abwt Variable Stars (photometric monitoring) - YZ Cnc, RZ LMi, RR Leo, RR Tau, ER UMa Nearby Stars (astrometric monitoring) - CN Leo (Wolf 359), Scholz's Star, Teegarden's Star
- Attempted All-Night Session (6 hr) finished early by cloud. Cold night (-4°C) - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: -25°/-30°C (min) - CCD Temperature: -4°C - Notes from 2026-02-17 >> - -
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29P/Schwassmann-Wachmann - 2026-02-18 (passing through Leo) Sun Distance 6.31 AU Earth Distance 5.40 AU (808.0 million km) |
29P/Schwassmann-Wachmann - 2026-02-18 Detail
Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -14.4 arcsec/hr, Dec 3.3 arcsec/hr) |
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Annotated CCD Image (50% size, square root scale)
7 x 90s exposure (average combine), 3x3 binning, Clear Filter 2026-02-18 01:27 UT (#1394158-65) 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 above |
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| Images of Comet_29P_Schwassmann-Wachmann on Comets 2026 Page >> | ||
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240P/NEAT - 2026-02-17 (passing through Taurus) Sun Distance 2.17 AU Earth Distance 1.89 AU (283.4 million km) |
240P/NEAT - 2026-02-17 Detail
Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 44.6 arcsec/hr, Dec 28.5 arcsec/hr) |
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Annotated CCD Image (50% size, square root scale)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-02-17 21:06 UT (#1394029-31) 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)
7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-02-17 21:09 UT (#1394029-37) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of Comet_240P_NEAT on Comets 2026 Page >> | ||
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C/2022 N2 (PANSTARRS) - 2026-02-17 (passing through Taurus) Sun Distance 4.21 AU Earth Distance 4.13 AU (617.6 million km) |
C/2022 N2 (PANSTARRS) - 2026-02-17 Detail
Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 25.7 arcsec/hr, Dec 2.6 arcsec/hr) |
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Annotated CCD Image (50% size, square root scale)
2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-02-17 21:22 UT (#1394040-41) 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)
6 x 60s exposure (average combine), 3x3 binning, Clear Filter 2026-02-17 21:25 UT (#1394040-46) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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| Images of C2022_N2_PANSTARRS on Comets 2026 Page >> | ||
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Nova Per 2020 (Perseus)
Alias: N Per 2020, PGIR20fbf, TCP J04291888+4354233, TCP J04291884+4354232 AT 2020abap (Type: CV) discovered 2020/11/27.230 UT by PGIR Alias: V1112 Per, AT2020abap |
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Nova Per 2020 - 2026-02-17 (T+1910.1d)
Image below (2026-02-17.864) was taken 1910.1 days after discovery of Nova Per 2020 Position of earlier nova (very faint) is shown by white cross-hairs Measured Magnitude +18.79 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-02-17 20:53 UT (#1394022-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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Nova Per 2020 - 2020-12-20 (T+25.2d)
Image below (2020-12-20.821) was taken 25.2 days after discovery of Nova Nova is shown by white cross hairs. Measured magnitude +11.3 |
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CCD Image (100% size, linear scale, cropped)
4 x 90s exposure (average combine), 3x3 binning, C Filter 2020-12-20 23:09 UT (#840125-29) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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AT 2025afsx (Hydra)
AT 2025afsx (Type: unk) discovered 2025-12-02.070 UT by MASTER Alias: MASTER OT J083020.05-040616.6, BGEM J083020.10-040615.5, ZTF25acgbcph Discovery Magnitude 16.8 (Other- Filter) vs Prior Non-Detection Limiting Magnitude 20 (Other- Filter) >7 mag amplitude outburst ( TNS 2025afsx ) |
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AT 2025afsx - 2026-02-17 (T+77.9d)
Image below (2026-02-17.944) was taken 77.9 days after discovery of 2025afsx Position of earlier transient (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +18.5 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-02-17 22:46 UT (#1394080-83) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2025afsx on Transients 2025 Page >> |
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AT 2026coj (Monoceros)
AT 2026coj (Type: CV) discovered 2026-02-08.809 UT by XOSS Alias: KATS26C004, TCP J08011102-0343141 Discovery Magnitude 15.1 (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/kats26c004.html ( TNS 2026coj ) |
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AT 2026coj - 2026-02-17 (T+9.2d)
Image below (2026-02-17.992) was taken 9.2 days after discovery of 2026coj Position of earlier transient (faint, fading) is shown by white cross-hairs Measured Magnitude +15.13 (Clear Filter) |
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Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-02-17 23:57 UT (#1394104-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2026coj on Transients 2026 Page >> |
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NGC 2398 (Gemini)
Discovery Magnitude 15.8 (Clear- Filter) vs Prior Non-Detection Limiting Magnitude 17.8 (Clear- Filter) Offsets:104.7Wand50.5NofNGC2398 ( TNS 2026cex | Gaia ) |
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AT2026cex - 2026-02-17 (T+18.5d)
Image below (2026-02-17.917) was taken 18.5 days after discovery of 2026cex Position of earlier transient (faint) is shown by white cross-hairs Measured Magnitude +17.44 (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 2026-02-17 22:09 UT (#1394060-64) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of AT 2026cex 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 - 2026-02-18 (T+11.7d)
Image below (2026-02-18.085) was taken 11.7 days after discovery of 2026cff Position of earlier supernova (faint) is shown by white cross-hairs Measured Magnitude +15.14 (Clear Filter) Poor quality image (due to poor sky transparency) |
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Annotated CCD Image (125% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-02-18 02:07 UT (#1394178-80) 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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UGCA 170 (Hydra)
Alias: PGC 27430 (catalog mag +14.4) Dec -22d 24m [ UGCA Galaxies ] |
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UGCA 170 - Detail
Position of galaxy (not visible) is indicated by white circle Poor qaulity image (poor sky transparency) Target rescheduled for a later session |
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Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-02-18 00:18 UT (#1394113-17) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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UGCA 200 (Sextans)
Alias: PGC 29299# [ Irregular Galaxies ] [ UGCA Galaxies ] |
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Position of UGA 200 (not visible) isindicated by white cicle
Poor Quality Image (poor sky transparecy) |
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Annotated CCD Image (50% size, square root scale)
6 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-02-17 23:32 UT (#1394095-100) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| UGCA 200 - Earlier Image (2026-01-16) |
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Annotated CCD Image (50% size, square root scale)
6 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-01-16 01:28 UT (#1391201-07) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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Z 160-45 with SN 2025abwt (Coma Berenices)
SN 2025abwt (Type: Ia) discovered 2025-10-29.544 UT by ZTF Alias: ZTF25acbeukb, ATLAS25obc Discovery Magnitude 16.7193 (r-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 16.7885 (r-ZTF Filter) Early SN candidate (r-rise > 0.82+-0.02 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/ZTF25acbeukb ( TNS 2025abwt ) |
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Z 160-45 - Spiral Galaxy
Alias : PGC 44341(catalog mag +15.8) wih adjacent galaxies PGC 44394 (catalog mag +15.4), PGC 44393 (catalog mag +16.0) & PGC 44398 |
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Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2026-02-18 01:07 UT (#1394149-53) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
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Z 160-45 with SN 2025abwt - 2026-02-18 (T+111.5d)
Image below (2026-02-18.040) was taken 111.5 days after discovery of 2025abwt Position of earlier supernova (not separately distinguishable) is shown by white cross-hairs Measured Magnitude (SN + Galaxy Nucleus) +14.8 (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 2026-02-18 01:07 UT (#1394149-53) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2 |
| Images of SN 2025abwt (in Z 160-45) on Supernovae 2025 Page >> |
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| This Web Page: | Images - Session 1394 (2026-02-17) |
| Last Updated : | 2026-02-28 |
| Site Owner : | David Richards |
| Home Page : | David's Astronomy Web Site |