David's Astronomy Pages
Images - Session 1302 (2025-03-17)

Objects Session Notes
Bullet 19P/Borrelly - Comet  (non-detection)
Bullet C/2021 X1 (Maury-Attard) - Comet  (non-detection)
Bullet C/2023 A3 (Tsuchinshan-ATLAS) - Comet
   
Bullet AT 2022acqx - Transient
Bullet AT 2023osr - CV Type Transient  (non-detection)
Bullet AT 2024re - CV Type Transient
Bullet AT 2024wzq - CV Type Transient
Bullet AT 2025la - Transient  (non-detection)
Bullet AT 2025lr - Afterglow Type Transient  (non-detection)
   
Bullet 2MFGC 13744 - Galaxy with Type II Supernova 2024afyu
Bullet IC 4479 - Spiral Galaxy with Type Ia Supernova 2024afpi
   
Bullet SN 2024aeey - Type Ia Supernova
   
Bullet UGC 5695 - Spiral Galaxy with Type II Supernova 2025cfc
Bullet UGC 10913 - Spiral Galaxy with Transient AT 2025hy
   
- Comet 49P/Arend-Rigaux, AT2024gfk, NGC 2642 w/SN2023aaby, NGC 2986 w/SN2025gj, NGC 3200 & UGCA 167 attempts failed (due to bad guiding)
   
   
Bullet Variable Stars (photometric monitoring)
- BL Lac, T CrB
   
- RZ LMi attempt failed (due to bad guiding)
   
Bullet Nearby Stars (astrometric monitoring)
- HH And, Barnards Star
   
- Teegardens Star attempt failed (due to bad guiding)
- Attempted night session (9.3h),. Images froms first 9 targets  rejected due to Foc2 Focusing Issue and consequential bad guiding
   
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature: -1°C (min)
- CCD Temperature: -20°/--25°C
- Notes from 2025-03-17 >>
   
- Aurora Images from 2025-03-17  >>
Image

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Observing Result

Image

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19P/Borrelly - Comet (non-detection)

19P/Borrelly - 2025-03-18
(passing through Ophiuchus)
Sun Distance 5.88 AU (receeding)
Earth Distance 5.54 AU (829.2 million km)
Expected position of comet (not visible) is shown by white circle
   19P/Borrelly - 2025-03-18, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -0.98 arcsec/hr, Dec -0.24 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
9 x 45s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 04:49 UT (#1302239-47)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  CCD Image (100% size, log scale, cropped)
9 x 45s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 04:49 UT (#1302239-47)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of 19P/Borrelly on Comets 2022 Page >>    
Images of 19P/Borrelly on Comets 2025 Page >>    

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C/2021 X1 (Maury-Attard) - Comet (non-detection)

C/2021 X1 (Maury-Attard) - 2025-03-18
(passing through Delphinus)

Sun Distance 6.63 AU (receeding)
Earth Distance 7.23 AU (1081.4 million km)
Expected position of comet (not visible) is shown by white circle
   C/2021 X1 (Maury-Attard) - 2025-03-18 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 4.62 arcsec/hr, Dec 12.37 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 90s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 03:56 UT (#1302215-17)
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 90s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 04:00 UT (#1302215-21)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
 Images of C/2021 X1 (Maury-Attard) on Comets 2023 Page >>    
 Images of C/2021 X1 (Maury-Attard) on Comets 2025 Page >>    

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C/2023 A3 (Tsuchinshan-ATLAS) - Comet

C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-18
(passing through Delphinus)
Sun Distance 3.05 AU (receeding)
Earth Distance 3.54 AU (529.2 million km)
   C/2023 A3 (Tsuchinshan-ATLAS) - 2025-03-18
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 5.30 arcsec/hr, Dec 25.48 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 30s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 03:32 UT (#1302198-200)
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)
3 x 30s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 03:32 UT (#1302198-200)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of C/2023 A3 Tsuchinshan-ATLAS on Comets 2024 Page >>    
Images of C/2023 A3 Tsuchinshan-ATLAS on Comets 2025 Page >>    

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AT 2022acqx - Transient

AT 2022acqx (Pegasus)
AT 2022acqx (Type: unk) discovered 2022-12-10.501 UT by MASTER
Alias: MASTER OT J221424.76+223053.4
Discovery Magnitude 15.1 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 18.6
[ TNS 2022acqx ]
  
AT 2022acqx - 2025-03-18 (T+828.7d)
Image below (2025-03-18.174) was taken 828.7 days after discovery of 2022acqx
Positon of earlier transient (distinct) is shown by white cross hairs.  
Measured magnitude +14.56 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 04:20 UT (#1302224-28)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of AT 2022acqx on Transients 2022 Page >>

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AT 2023osr - CV Type Transient  (non-detection)

AT 2023osr (Hercules)
AT 2023osr (Type: CV) discovered 2023-08-07.391 UT by ATLAS
Alias: ATLAS23qkt
Discovery Magnitude 16.89 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.34
[ TNS 2023osr ]
  
AT 2023osr - 2025-03-18 (T+588.7d)
Image below (2025-03-18.095) was taken 588.7 days after discovery of 2023osr
Positon of earlier transient (not visible) is shown by white cross hairs.  
Non-Detection Limiting Magnitude +14.56 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 02:26 UT (#1302151-55)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of AT 2023osr on Transients 2023 Page >>

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AT 2024re - CV Type Transient

AT 2024re (Lyra)
AT 2024re (Type: CV) discovered 2024-01-05.585 UT by Gaia
Alias: Gaia24aeg
Discovery Magnitude 16.21 (G-Gaia Filter)
vs Historic Magnitude 17.70 +/- 0.62 SD
Candidate CV in 2mag outburst
[ TNS 2024re | Gaia24aeg ]
  
AT 2024re - 2025-03-18 (T+437.5d)
Image below (2025-03-18.117) was taken 437.5 days after discovery of 2024re
Positon of earlier transient (very faint/barely visible) is shown by white cross hairs.  
Measured Magnitude +18.40 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 02:51 UT (#1302175-79)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of AT 2024re 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 - 2025-03-18 (T+170.6d)
Image below (2025-03-18.190) was taken 170.6 days after discovery of 2024wzq
Positon of earlier transient (very faint/barely visible) is shown by white cross hairs.  
Measured Magnitude +14.27 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 04:37 UT (#1302232-35)
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 2025la - Transient  (non-detection)

AT 2025la (Cygnus)
AT 2025la (Type: unk) discovered 2025-01-11.109 UT by Gaia
Alias: Gaia25acy
Discovery Magnitude 16.89 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.34
[ TNS 2025la | Gaia25acy ]
  
AT 2025la - 2025-03-18 (T+66.0d)
Image below (2025-03-18.125) was taken 66.0 days after discovery of 2025la
Positon of earlier transient (not visible) is shown by white cross hairs.  
Non-Detection Limiting Magnitude +18.5 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 03:08 UT (#1302182-86)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of AT 2025la on Transients 2025 Page >>

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AT 2025lr - Afterglow Type Transient  (non-detection)

AT 2025lr (Crater)
AT 2025lr (Type: Afterglow) discovered 2025-01-14.316 UT by MASTER
Alias: MASTER OT J110618.40-150641.1, GRB 250114A
Discovery Magnitude 15.9 (? Filter)
vs Prior Non-Detection Limiting Magnitude 19.7
Remarks: GRB 250114A optical counterpart
[ TNS 2025lr ]
  
AT 2025lr - 2025-03-17 (T+62.7d)
Image below (2025-03-17.995) was taken 62.7 days after discovery of 2025lr
Positon of reported transient (faded & no longer visible) is shown by white circle
Non-Detection Limiting Magnitude +18.5 (Clear Filter)
Image
Annotated CCD Image (100% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-17 23:56 UT (#1302100-01)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of AT 2025lr on Transients 2025 Page >>

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2MFGC 13744 - Galaxy with Type II Supernova 2024afyu

2MFGC 13744 with SN 2024afyu (Ophiuchus)
SN 2024afyu (Type: II) discovered 2024-12-29.573 UT by ZTF
using Palomar 1.2m Oschin Telescope
Alias: ZTF24abzxalv
Discovery Magnitude 15.63 (r-ZTF Filter)
 ( TNS 2024afyu )

2MFGC 13744 with SN 2024afyu (T+78.5d)

Image

Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 01:30 UT (#1302129-33)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
2MFGC 13744 with SN 2024afyu - 2025-03-18 (T+78.5d)
Image below (2025-03-18.057) was taken 78.5 days after discovery of 2024afyu
Position of reported supernova (distinct) is shown by white cross-hairs 
Measured Magnitude +14.80 (Clear Filter)

Image

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 01:30 UT (#1302129-33)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2024afyu (in 2MFGC 13744) on Supernova 2024 Page >>

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IC 4479 - Spiral Galaxy with Type Ia Supernova 2024afpi

IC 4479 with SN 2024afpi (Bootes)
SN 2024afpi (Type: Ia) discovered 2024-12-29.649 UT by ATLAS
using ATLAS Haleakala Telescope
Alias: ATLAS24rzi, ZTF24acahubh, GOTO24jqv
Discovery Magnitude 18.51 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.43
 ( TNS 2024afpi )

IC 4479 - Spiral Galaxy
IC 4479 (alias PGC 52338, catalog mag +13.8)
with adjacent galaxies
IC 4477 (catalog mag +15.5),  PGC 214309 (catalog mag +17.2)
& PGC 1835366 (catalog mg +18.4)

Image

Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 01:08 UT (#1302122-26)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
IC 4479 with SN 2024afpi - 2025-03-18 (T+78.4d)
Image below (2025-03-18.041) was taken 78.4 days after discovery of 2024afpi
Position of reported supernova (very faint) is shown by white cross-hairs 
Estimated Magnitude +19.5 (Clear Filter)

Image

Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 01:08 UT (#1302122-26)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2024afpi (in IC 4479) on Supernova 2024 Page >>

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NGC 3521 - Spiral Galaxy with Type Ic Supernova 2024aecx  (non-detection)

NGC 3521 with SN 2024aecx (Leo)
SN 2024aecx (Type: Ic) discovered 2024-12-16.557 UT by ATLAS
using ATLAS Haleakala Telescope
Alias: ATLAS24rkq, PS24msg, ZTF24abyaspl
Discovery Magnitude 14.54 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 18.56
 ( TNS 2024aecx )

NGC 3521 - Spiral Galaxy
Hidden Treasures 56
[ Hidden Treasures ]

Image

Annotated CCD Image (50% size, square root scale)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 00:22 UT (#1302107-11)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 3521 - Detail

Image

Annotated CCD Image (85% size, square root scale, cropped)
Image details as above
 
NGC 3521 with SN 2024aecx - 2025-03-18 (T+91.5d)
Image below (2025-03-18.009) was taken 91.5 days after discovery of 2024aecx
Position of reported supernova (not distinguishable) is shown by white cross-hairs 

Image

Annotated CCD Image (150% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 00:22 UT (#1302107-11)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 3521 with SN 2024aecx - Detail (T+91.5d)
Position of reported supernova (not visible) is shown by white cross-hairs 

Image

Annotated CCD Image (150% size, log scale, cropped)
Image details as above
 
Images of SN 2024aecx (in NGC 3521) on Supernova 2024 Page >>
 
NGC 3521 - Earlier Image (2007)

Image

CCD Image 
7 x 180s exposure (average combine), 2x2 binning, C filter,  
2007-02-18 00:25h UT (#176221-27)
8" LX200 Classic + ST-7E
 

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SN 2024aeey - Type Ia Supernova

AT 2024aeey (Draco)
AT 2024aeey (Type: unk) discovered 2024-12-15.090 UT by Gaia
Alias: Gaia24dri, GOTO25fy, ATLAS25ake
Discovery Magnitude 15.56 (G-Gaia Filter)
Candidate SN near PanSTARRS galaxy
 ( TNS 2024aeey | Gaia24dri )

AT 2024aeey - 2025-03-18 (T+92.9d)
Image below (2025-03-18.027) was taken 92.9 days after discovery of 2024aeey
Position of reported supernova (faint) is shown by white cross-hairs 
Measured Magnitude +17.68 (Clear Filter)

Image

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 00:48 UT (#1302115-19)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
SN 2024aeey - Earlier Image, 2024-12-24 (T+9.7d)
Image below (2024-12-24.831) was taken 9.7 days after discovery of 2024aeey
Position of reported supernova (distinct) is shown by white cross-hairs 
Measured Magnitude +15.62 (Clear Filter)

Image

Annotated CCD Image (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-12-24 20:05 UT (#1287045-49)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2024aeey on Supernova 2024 Page >>

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UGC 5695 - Spiral Galaxy with Type II Supernova 2025cfc

UGC 5695 with SN 2025cfc (Leo)
SN 2025cfc (Type: II) discovered 2025-02-20.905 UT by GOTO
Using GOTO-North Telescope
Alias: GOTO25anu
Discovery Magnitude 17.75 (L-GOTO Filter)
vs Prior Non-Detection Limiting Magnitude 19.3
 ( TNS 2025cfc )

UGC 5695 - Spiral Galaxy with SN 2025cfc (T+25.1d)

Image

Annotated CCD Image (50% size, square root scale)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-17 23:45 UT (#1302096-97)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGC 5695 with SN 2025cfc - 2025-03-17 (T+25.1d)
Image below (2025-03-17.988) was taken 25.1 days after discovery of 2025cfc
Position of reported supernova (faint but distinct) is shown by white cross-hairs 
Measured Magnitude +16.26 (Clear Filter)
Poor quality image (trailed stars)

Image

Annotated CCD Image (150% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-17 23:45 UT (#1302096-97)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2025cfc (in UGC 5695) on Supernova 2025 Page >>

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UGC 10913 - Spiral Galaxy with Transient AT 2025hy

UGC 10913 with AT 2025hy (Hercules)
AT 2025hy (Type: unk) discovered 2025-01-01.573 UT by ZTF
Using Palomar 1.2m Oschin Telescope
Alias: ZTF25aabaclh
Discovery Magnitude 18.29 (r-ZTF Filter)
 ( TNS 2025hy )

UGC 10913 - Spiral Galaxy

Image

Annotated CCD Image (70% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 01:52 UT (#1302136-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGC 10913 with AT 2025hy - 2025-03-18 (T+75.5d)
Image below (2025-03-18.072) was taken 75.5 days after discovery of 2025hy
Position of reported transient (very faint / barely detectable) is shown by white cross-hairs 
Poor quality image (trailed stars)

Image

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2025-03-18 01:52 UT (#1302136-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2025hy (in UGC 10913) on Supernova 2025 Page >>

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