David's Astronomy Pages Images - Session 1368 (2025-09-28)

Images (S1367)

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Image (S1369)

Objects

Session Notes

C/2022 N2 (PANSTARRS) - Comet C/2025 A6 (Lemmon) - Comet     Nova Ser 2025 (V691 Ser)     AT 2023ud - Transient  (non-detection) AT 2023hxd - CV Type Transient AT 2023ugt - CV Type Transient AT 2024ges - Type YSO Transient AT 2024wzq - CV Type Transient AT 2024zvz - Transient  (non-detection) AT 2025ran - Transient  (non-detection)     IC 2567 - Spiral Galaxy with Type Ia Supernova 2025kid  (non-detection)     NGC 7623 - Spiral Galaxy (Part of Pegasus I Galaxy Group) NGC 7626 & NGC 7619 - Elliptical Galaxies (Part of Pegasus I Galaxy Group)     UGCA 3 - Irregular Galaxy (PGC 721) UGCA 5 - Spiral Galaxy (PGC 1218)  (non-detection) UGCA 90 - Spiral Galaxy (PGC 14936)  (non-detection) UGC 1206 - Galaxy with Type Ia Supernova 2025pao UGC 3458 - Spiral Galaxy with Type II Supernova 2025yao       - AT2022uha attempt failed (cloud/bad guiding) - UGCA 9 attempted rejected (DB Filter inappropriately specified)     Variable Stars (photometric monitoring) - RX And, U And, Z And, TT Ari, T CrB, SS Cyg, BL Lac     Nearby Stars (astrometric monitoring) - Barnards Star, EV Lac

- All-night session (8.8 hr) - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: Initially 9°C but dropping through night to 2.5°C (min) by dawn. - CCD Temperature:  -15°/-20°C - Notes from 2025-09-28 >>           -

Observing Result

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C/2022 N2 (PANSTARRS) - Comet

C/2022 N2 (PANSTARRS) - 2025-09-29 (passing through Taurus) Sun Distance 3.86 AU (receeding) Earth Distance 3.17 AU (473.7 million km)		C/2022 N2 (PANSTARRS) - 2025-09-29 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 2.13 arcsec/hr, Dec 4.14 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 7 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-09-29 04:15 UT (#1368245-51) 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
Images of C/2022 N2 (PANSTARRS) on Comets 2025 Page >>

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C/2025 A6 (Lemmon) - Comet

C/2025 A6 (Lemmon) - 2025-09-29 (passing through Leo Minor) Sun Distance 1.03 AU (approaching) Earth Distance 1.11 AU (165.7 million km)		C/2025 A6 (Lemmon) - 2025-09-29 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 223.08 arcsec/hr, Dec 56.59 arcsec/hr)
Annotated CCD Image (50% size, log scale) 60s exposure (single frame), 3x3 binning, Clear Filter 2025-09-29 03:24 UT (#1368219) 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) 15 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-09-29 03:33 UT (#1368219-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
C/2025 A6 (Lemmon) - 2025-09-29		C/2025 A6 (Lemmon) - 2025-09-29 Detail
False Colour CCD Image (50% size, log scale) 15 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-09-29 03:33 UT (#1368219-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		False Colour  CCD Image (100% size, log scale, cropped) Image details as left
Images of C/2025 A6 (Lemmon) on Comets 2025 Page >>

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Nova Ser 2025 (V691 Ser)

Nova Ser 2025  (Serpens) Nova Ser 2025 discovered 2025-07-17.908 UT by New Milky Way Survey (TCP J18385851-0351482 - discovered 2025-07-17.909 UT by ZTF Alias: ZTF25abbsdyb, N Ser 2025, V691 Ser Discovery Magnitude 11.9

Nova Ser 2025 - 2025-09-28 (T+73.0d) Image below (2025-09-28.885) was taken 73.0 days after discovery of Nova Ser 2025 Position of nova (fading) is shown by white cross-hairs Measured Magnitude +15.46 (Clear Filter) Poor quality image (cloud / single frame)

Annotated CCD Image (100% size, linear scale, cropped) 60s exposure (single frame), 3x3 binning, Clear Filter 2025-09-28 21:14 UT (#1368066) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Nova Ser 2025 - Earlier Image, 2025-08-09 (T+23.1d) Image below (2025-08-09.997) was taken 23.1 days after discovery Position of nova (bright) is shown by white cross-hairs Measured Magnitude +12.93 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-08-10 00:04 UT (#1346013-17) 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 2023ud - Transient (non-detection)

AT 2023ud (Perseus) AT 2023ud (Type: unk) discovered 2023-01-15.649 UT by XOSS Alias: KATS23A002, TCP J04085466+4128166 Discovery Magnitude 14.43 (Clear Filter) SN or CV candidate classified by XOSS  ( TNS 2023ud )

AT 2023ud - 2025-09-29 (T+987.4d) Image below (2025-09-29.064) was taken 987.4 days after discovery of 2023ud Position of earlier transient (faded & no longer visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +19.4 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-29 01:41 UT (#1368158-62) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023ud on Transients 2023 Page >>

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AT 2023hxd - CV Type Transient

AT 2023hxd (Aquila) AT 2023hxd (Type: CV) discovered 2023-05-11.245 UT by MASTER Alias: MASTER OT J190920.77+004831.4 Discovery magnitude 13.4 (Clear filter)  ( TNS 2023hxd)

AT 2023hxd - 2025-09-28 (T+871.6d) Image below (2025-09-28.856) was taken 871.6 days after discovery of 2023hxd Position of earlier transient (faint) is shown by white cross-hairs Measured Magntitude +14.27 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped) 2 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-09-28 20:35 UT (#1368032-33) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2023hxd - Earlier Image, 2023-10-22 (T+164.6d) Image below (2023-10-22.814) was taken 164.6 days after discovery of 2023hxd Position of earlier reported transient (very faint) is shown by white cross-hairs Measured magntitude +16.27 (Clear Filter)

Annotated CCD Image (150% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-10-22 19:35 UT (#1158031-35) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2023hxd on Transients 2023 Page >>

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AT 2023ugt - CV Type Transient

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AT 2024ges - Type YSO Transient

AT 2024ges (Pegasus) AT 2024ges (Type: YSO) discovered 2024-04-03.251 UT by Gaia Alias: Gaia24bei Alerting Magnitude 14.72 (G-Gaia Filter) vs Historic Magnitude 12.58 +/- 0.19 SD Sudden dip of a known UXOR variable  ( TNS 2024ges | Gaia24bei )

AT 2024ges - 2025-09-28 (T+543.7d) Image below (2025-09-28.924) was taken 543.7 days after discovery of 2024ges Position of reported transient (distinct) is shown by white cross-hairs Measured Magnitude +12.70 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-28 22:16 UT (#1368087-89) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024ges on Transients 2024 Page >>

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AT 2024wzq - CV Type Transient

AT 2024wzq (Serpens) AT 2024wzq (Type: CV) discovered 2024-09-28.573 UT by Gaia Alias: Gaia24csr Discovery Magnitude 13.97 (G-Gaia Filter) vs Historic Magnitude 14.75 +/- 0.26 SD 0.7 mag brightening in Gaia and WISE source [ TNS 2024wzq | Gaia24csr ]

AT 2024wzq - 2025-09-28 (T+365.3d) Image below (2025-09-28.848) was taken 365.3 days after discovery of 2024wzq Positon of earlier transient (faint) is shown by white cross hairs.   Measured Magnitude +14.65 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-09-28 20:23 UT (#1368025-28) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2024wzq - Earlier Image 2025-04-29 (T+212.5d) Image below (2025-04-29.063) was taken 212.5 days after discovery of 2024wzq Positon of earlier transient (faint) is shown by white cross hairs.   Measured Magnitude +14.23 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 4 x 60s exposure (average combine), 3x3 binning, Clear Filter 2025-04-29 01:33 UT (#1317050-54) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024wzq on Transients 2024  Page >>

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AT 2024zvz - Transient  (non-detection)

AT 2024zvz (Aquila) AT 2024zvz (Type: unk) discovered 2024-10-31.207 UT by ATLAS Alias: ATLAS24pwi Discovery Magnitude 16.53 (cyan-ATLAS Filter) vs Prior Non-Detection Limiting Magnitude 19.31 [ TNS 2024zvz ]

AT 2024zvz - 2025-09-28 (T+332.7d) Image below (2025-09-28.896) was taken 332.7 days after discovery of 2024zvz Positon of earlier transient (not visible) is shown by white cross hairs.   Non-Detection Limiting Magnitude +17.9 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 180s exposure (single frame), 3x3 binning, Clear Filter 2025-09-28 21:30 UT (#1368074) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2024zvz on Transients 2024  Page >>

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AT 2025ran - Transient  (non-detection)

AT 2025ran (Pisces) AT 2025ran (Type: unk) discovered 2025-07-13.386 UT by ZTF Alias: ZTF25abbedxh Discovery Magnitude 16.99 (i-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 19.74 [ TNS 2025ran ]

AT 2025ran - 2025-09-28 (T+77.6d) Image below (2025-09-28.972) was taken 77.6 days after discovery of 2025ran Positon of earlier transient (not visible) is shown by white cross hairs.   Non-Detection Limiting Magnitude +18.5 (Clear Filter)

Annotated CCD Image (100% size, linear scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-28 23:25 UT (#1368117-19) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2025ran on Transients 2025  Page >>

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IC 2567 - Spiral Galaxy with Type Ia Supernova 2025kid  (non-detection)

IC 2567 with SN 2025kid (Leo) SN 2025kid (Type: Ia) discovered 2025-05-10.271 UT by ZTF using Palomar 1.2m Oschin Telescope Alias: ZTF25aapwshe Discovery Magnitude 18.75 (g-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 19.84 (r-ZTF Filter)  ( TNS 2025kid )

IC 2567 with SN 2025kid - 2025-09-29 (T+141.9d) Image below (2025-09-29.159) was taken 141.9 days after discovery of 2025kid Position of reported supernova (not visible) is shown by white cross-hairs Non-Detection Limiting Magnitude +16.9 (Clear Filter)

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-29 03:58 UT (#1368238-42) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025kid (in IC 2567) on Supernova 2025 Page >>

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NGC 7623 - Spiral Galaxy (Part of Pegasus I Galaxy Group)

NGC 7623 (Pegasus) Alias: Part of Pegasus I Galaxy Group Ast.Now Deep Sky Challenge, Oct 2025  [ Deep Sky Challanges (Ast.Now) ]

Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-29 03:10 UT (#1368211-15) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 7623 - Earlier Image (2025-09-26)

Annotated CCD Image (125% size, square root scale, cropped) 4 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-26 03:11 UT (#1366166-69) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 7626 & NGC 7619 - Elliptical Galaxies (Part of Pegasus I Galaxy Group)

NGC 7626, NGC 7619 & NGC 7617 (Pegasus) Part of Pegasus I Galaxy Group Ast.Now Deep Sky Challenge, Oct 2025  [ Deep Sky Challanges (Ast.Now) ]

CCD Image (50% size, square root scale) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-28 22:42 UT (#1368094-98) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 7626 -  Elliptical Galaxy

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-28 22:42 UT (#1368094-98) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 7619 -  Elliptical Galaxy

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-28 22:42 UT (#1368094-98) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 7617 -  Spiral Galaxy

Annotated CCD Image (125% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-28 22:42 UT (#1368094-98) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGCA 3 - Irregular Galaxy (PGC 721)

UGCA 3 (Cetus) Alias: PGC 721 (catalog mag +15.4) [ UGCA Galaxies ] Position of UGCA 3 is shown by white circle UGCA 3 is very faint in this image (possibly due to poor sky transparency/high airmass)) Target taken at Altitude: 14.7°, Airmass: 3.920 Limiting star magnitude is +17.5 but galaxy has very low surface brightness Target to be rescheduled for a later session

Annotated CCD Image (100% size, square root scale, cropped) 3 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-28 23:51 UT (#1368125-29) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGCA 5 - Spiral Galaxy (PGC 1218)  (non-detection)

UGCA 5 (Cetus) Alias: PGC 1218 (catalog mag +15.2) [ UGCA Galaxies ] Position of UGCA 5 (not visible) is shown by white circle Poor quality image (poor sky transparency, uneven sky background) Target taken at Altitude: 12.9°, Airmass: 4.434 Target to be rescheduled for a later session

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-29 00:58 UT (#1368145-49) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGCA 90 - Spiral Galaxy (PGC 14936)  (non-detection)

UGCA 90 (Eridanus) Alias: PGC 14936 (catalog mag +12.9) [ UGCA Galaxies ] Position of UGCA 90 (not visible) is shown by white circle Poor quality image (poor sky transparency, uneven sky background) Target taken at Altitude: 10.6°, Airmass: 5.319 Target to be rescheduled for a later session

Annotated CCD Image (100% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-29 04:34 UT (#1368256-60) 12" LX200R  (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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UGC 1206 - Galaxy with Type Ia Supernova 2025pao

UGC 1206 with SN 2025pao (Pisces) SN 2025pao (Type: Ia) discovered 2025-06-26.454 UT by CRTS Alias: SNhunt473, GOTO25ein, ATLAS25gwy, ZTF25ababeev Discovery Magnitude 17.5 (V-CRTS Filter) vs Prior Non-Detection Limiting Magnitude 21.2  ( TNS 2025pao )

UGC 1206 with SN 2025pao - 2025-09-29 (T+94.6d) Image below (2025-09-29.048) was taken 94.6 days after discovery of 2025pao Position of earlier SN (not visible or barely visible) is shown by white cross-hairs Non-detection Limiting Magnitude +18.6 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-29 01:18 UT (#1368151-55) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 1206 with SN 2025pao - Earlier Image, 2025-08-26 (T+61.5d) Image below (2025-08-26.989) was taken 61.5 days after discovery of 2025pao Position of reported SN (very faint) is shown by white cross-hairs Estimated Magnitude +18.2 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-08-26 23:53 UT (#1352058-62) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025pao (in UGC 1206) on Supernova 2025 Page >>

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UGC 3458 - Spiral Galaxy with Type II Supernova 2025yao

UGC 3458 with SN 2025yao (Camelopardalis) SN 2025yao (Type: II) discovered 2025-09-20.446 UT by ZTF using Palomar 1.2m Oschin Telescope Alias: ZTF25absindv Discovery Magnitude 18.37 (r-ZTF Filter) vs Prior Non-Detection Limiting Magnitude 20.32  ( TNS 2025yao )

UGC 3458 with SN 2025yao - 2025-09-29 (T+8.6d) Image below (2025-09-29.081) was taken 8.6 days after discovery of 2025yao Position of reported supernova (faint) is shown by white cross-hairs Estimated Magnitude +16.7 (Clear Filter) Poor quality image (poor guiding, best 2 of 5 frames)

Annotated CCD Image (150% size, square root scale, cropped) 2 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-29 02:03 UT (#1368166-69) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 3458 with SN 2025yao - Earlier Image, 2025-09-26 (T+5.6d) Image below (2025-09-26.012) was taken 5.6 days after discovery of 2025yao Position of reported supernova (faint) is shown by white cross-hairs Measured Magnitude +16.54 (Clear Filter)

Annotated CCD Image (150% size, square root scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, Clear Filter 2025-09-26 00:25 UT (#1366118-22) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of SN 2025yao (in UGC 3458) on Supernova 2025 Page >>

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