David's Astronomy Pages
Images - Session 1192 (2024-02-25)

Objects Session Notes
Bullet 12P/Pons-Brooks - Comet
Bullet 65P/Gunn - Comet (non-detection)
Bullet 103P/Hartley - Comet
Bullet C/2017 K2 (PANSTARRS) - Comet
Bullet C/2021 F1 (Lemmon-PANSTARRS) - Comet (non-detection)
   
Bullet YZ Cnc - Cataclysmic Variable Star UGSU
   
Bullet AT 2023ati - Transient (non-detection)
Bullet AT2023cxz - CV Type Transient (non-detection)
Bullet AT 2023tsk - Type BL Transient
Bullet AT 2023abtv - CV Type Transient
   
Bullet CGCG 119-104 - Spiral Galaxy with Type Ia Supernova 2024cdi
Bullet IC 4305 - Elliptical Galaxy with Type Ia Supernova 2023edc (non-detection)
   
Bullet NGC 3893 - Spiral Galaxy with LRN Type Transient AT 2023uhx
   
Bullet PGC 23705 - Spiral Galaxy
Bullet SN 2023iy - Type Ia Supernova in WISEA Galaxy (non-detection)
   
Bullet UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut
Bullet UGC 11858 - Spiral Galaxy with Type Ia Supernova 2023rjj (non-detection)
   
  - UGC 12639 w/SN 2023jri attempt  failed (due to cloud)
   
Bullet Variable Stars (photometric monitoring)
- YZ Cnc, GW Ori
    
Bullet Nearby Stars (astrometric monitoring)
- HH And
 
  
- Attempted All Night Session (10.1 hrs) with several interruptions by cloud & rain showers
   
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature: 0.5°C (min)
- CCD Temperature:   -20°/25°C
- Notes from 2024-02-25 >>
   
-  
   

Observing Result

Image

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12P/Pons-Brooks - Comet (Outburst)

12P/Pons-Brooks - 2024-02-25
(passing through  Andromeda)

Sun Distance 1.26 AU (approaching)
Earth Distance 1.71 AU (256.4 million km)
   12P/Pons-Brooks -  2024-02-25 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 188.59 arcsec/hr, Dec -25.83 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, log scale)
90s exposure (single frame), 3x3 binning, Clear Filter
2024-02-25 19:37 UT (#1192012)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  Annotated CCD Image (100% size, log root scale, cropped)
3 x 90s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 19:40 UT (#1192012-14)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
12P/Pons-Brooks - 2024-02-25 Detail    12P/Pons-Brooks - 2024-02-25 Detail
Image   Image
Annotated false-colour CCD Image (50% size, log scale)
3 x 90s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 19:40 UT (#1192012-14)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  Annotated false-colour CCD Image
(100% size, log scale, cropped)
Inverse Spectrum
Image details as left
     
Images of 12P/Pons-Brooks on Comets 2023 Page >>    
Images of 12P/Pons-Brooks on Comets 2024 Page >>    

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65P/Gunn - Comet (non-detection)

65P/Gunn - 2024-02-26
(passing through Virgo)
Sun Distance 3.64 AU
Earth Distance 2.84 AU (424.7 million km)
Expected position of comet (not visible) is indicated by white circle
Poor quality image (due to bright uneven sky background)
   65P/Gunn - 2024-02-26 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -9.69 arcsec/hr, Dec 6.99 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
5 x 90s exposure (average combine), 3x3 binning, Clear Filter
2024-02-26 00:19 UT (#1192117-21)
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)
Image details as left
     
Images of 65P/Gunn on Comets 2024 Page >>    

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103P/Hartley - Comet

103P/Hartley - 2024-02-25
(passing through Monoceros)

Sun Distance 1.99 AU AU (receeding)
Earth Distance 1.13 AU (169.8 million km)
   103P/Hartley - 2024-02-25  Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -0.75 arcsec/hr, Dec 34.53 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 21:13 UT (#1192064-66)
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)
8 x 60s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 21:17 UT (#1192064-72)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of 103P/Hartley on Comets 2023 Page >>    
Images of 103P/Hartley on Comets 2024 Page >>    

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C/2017 K2 (PANSTARRS) - Comet

C/2017 K2 (PANSTARRS) -  2024-02-25
(passing through Orion)
Sun Distance 5.10 AU (receeding)
Earth Distance 4.85 AU (725.6 million km)
   C/2017 K2 (PANSTARRS) -  2024-02-25 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -3.47 arcsec/hr, Dec 20.28 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 45s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 19:53 UT (#1192026-28)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  CCD Image (100% size, square root scale, cropped)
7 x 45s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 19:55 UT (#1192026-34)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of C2017 K2 (PANSTARRS) on Comets 2021 Page >>    
Images of C2017 K2 (PANSTARRS) on Comets 2022 Page >>    
Images of C2017 K2 (PANSTARRS) on Comets 2023 Page >>    
Images of C2017 K2 (PANSTARRS) on Comets 2024 Page >>    

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C/2021 F1 (Lemmon-PANSTARRS) - Comet (non-detection)

C/2021 F1 (Lemmon-PANSTARRS) - 2024-02-25
(passing through
Octans)  - bug !
Sun Distance 7.69 AU
Earth Distance 7.78 AU (1,164.4 million km)
Expected position of comet (not visible) is indicated by white circle
Comet is too far to be seen even if sky quality was better
   C/2021 F1 (Lemmon-PANSTARRS) - 2024-02-25 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -9.69 arcsec/hr, Dec 6.99 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
5 x 90s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 21:43 UT (#1192087-91)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  Negative CCD Image (100% size, square root scale, cropped)
Image details as left
     
Images of C/2021 F1 (Lemmon-PANSTARRS) on Comets 2024 Page >>    

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YZ Cnc - Cataclysmic Variable Star UGSU

YZ Cnc (Cancer)
GCVS Variable Star
Period 11-12d, mag +10.5 to +16 range
  
YZ Cnc
Position of GCVS YZ Cnc is shown by white cross-hairs
Image 
Annotated CCD Image (70% size, linear scale)
5 x 30s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 21:29 UT (#1192075-79)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
YZ Cnc - 2024-02-25
Position of GCVS YZ Cnc is shown by white cross-hairs
Measured Magnitude +13.7 (Clear Filter)
Image 
Annotated CCD Image (100% size, linear scale, cropped)
5 x 30s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 21:29 UT (#1192075-79)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
 

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AT 2023ati - Transient (non-detection)

AT 2023ati (Canis Minor)
AT 2023ati (Type: unk) discovered 2023-01-23.321 UT by ZTF
Alias: ZTF23aaajjji
Discovery Magnitude 15.26 (g-ZTF Filter)
vs Prior Non-Detection Limiting Magnitude 19.12
 ( TNS 2023ati )

 
AT 2023ati - 2024-02-25 (T+398.5d)
Image below (2024-02-25.867) was taken 398.5 days after discovery of 2023ati
Position of reported transient (not visible) is shown by white cross-hairs

Image

Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 20:56 UT (#1192057-61)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2023ati on Transients 2023 Page >>

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

AT 2023cxz (Camelopardalis)
AT 2023cxz (Type: CV) discovered 2023-03-12.285 UT by ATLAS
Alias: ATLAS23dmk, Gaia23boy
Discovery Magnitude 14.87 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.45
Gaia, 2023-03-14 23:14, mag 16.13
Gaia, 2023-04-16 09:02, mag 18.26
 ( TNS 2023cxz | Gaia23boy )

 
AT 2023cxz - 2024-02-25 (T+350.7d)
Image below (2024-02-25.989) was taken 350.7 days after discovery of 2023cxz
Position of reported transient (faded & no longer visible) is shown by white cross-hairs
Non-Detection

Image

Annotated CCD Image (100% size, linear scale, cropped)
2 x 60s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 23:45 UT (#1192106-07)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2023ati on Transients 2023 Page >>

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AT 2023tsk - Type BL Transient

AT 2023tsk (Bootes)
AT 2023tsk (Type: BL) discovered 2023-09-25.828 UT by Gaia
Alias: Gaia23cqg
Discovery Magnitude 14.76 (g-Gaia Filter)
vs Prior Non-Detection Limiting Magnitude 21.5 ?
vs Historic Magnitude 15.94 +/- 0.41 SD
Known BL Lac brightens by 2 mag in 45 months
Gaia, 2018-05-07 23:58, mag 15.01
Gaia, 2019-11-04 01:17, mag 16.99
Gaia, 2023-01-26 17:20, mag 15.50
Gaia, 2023-09-25 19:53, mag 14.76
Gaia, 2023-11-06 15:16, mag 15.51
Gaia, 2023-12-05 07:22, mag 15.30
Gaia, 2024-01-04 02:51, mag 15.54
 ( TNS 2023tsk | Gaia23cqg )

 
AT 2023tsk - 2024-02-26 (T+153.2d)
Image below (2024-02-26.034) was taken 153.2 days after discovery of 2023tsk
Position of reported transient (faint but distinct) is shown by white cross-hairs
Measured Magnitude +15.10 (Clear Filter)

Image

Annotated CCD Image (100% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-02-26 00:56 UT (#1192132-35)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2023ati on Transients 2023 Page >>

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AT 2023abtv - CV Type Transient

AT 2023abtv (Pegasus)
AT 2023abtv (Type: CV) discovered 2023-12-26.986 UT by Gaia
Alias: Gaia23duv
Discovery magnitude 12.07 (G-Gaia Filter)
vs Historic Magnitude 13.38 +/- 0.57 (SD)
Gaia and WISE source brightens by 2 mag
 ( TNS 2023abtv | Gaia23duv )
  
AT 2023abtv - 2024-02-26 (T+61.2d)
Image below (2024-02-26.201) was taken 61.2 days after discovery of 2023abtv
Position of reported transient (bright) is shown by white cross-hairs
Measured Magnitude +11.91 (Clear Filter)
Image 
Annotated CCD Image (100% size, linear scale, cropped)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter
2024-02-26 04:52 UT (#1192152-56)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of AT 2023abtv on Transients 2023 Page >>

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CGCG 119-104 - Spiral Galaxy with Type Ia Supernova 2024cdi

CGCG 119-104 with SN 2024cdi (Cancer)
SN 2024cdi (Type: Ia) discovered 2024-02-10.415 UT by ATLAS
Alias: ATLAS24cgo
Discovery Magnitude 18.68 (cyan-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.59
 ( TNS 2024cdi )

 
CGCG 119-104 - Spiral Galaxyw ith SN 2024cdi (T+15.5d)
CGCG 119-104 (Alias: PGC 23702  catalog mag +15.6)
with nearby spiral galaxy PGC 23705 (catalog mag +14.0)

Image

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 22:03 UT (#1192094-98)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
CGCG 119-104 with SN 2024cdi - 2024-02-25 (T+15.5d)
Image below (2024-02-25.913) was taken 15.5 days after discovery of 2024cdi
Position of reported transient (not separately distinguishable) is shown by white cross-hairs
Measured Magnitude (nucleus + sn)  +14.39 (Clear Filter)

Image

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 22:03 UT (#1192094-98)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2024cdi (in CGCG 119-104) on Supernova 2024 Page >>

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IC 4305 - Elliptical Galaxy with Type Ia Supernova 2023edc (non-detection)

IC 4305 with SN 2023edc (Canes Venatici)
SN 2023edc (Type: Ia) discovered 2023-03-28.518 UT by PS1
Alias: PS23bcb
Discovery Mag 18.12 (w-PI Filter)
 ( Rochester Supernova site | TNS 2023edc )
 
IC 4305 with SN 2023edc - 2024-02-26 (T+334.5d)
Image below (2024-02-26.019) was taken 334.5 days after discovery of 2023edc
Position of earlier SN (no longer visible) is shown by white cross-hairs
Image
Annotated CCD Image (150% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-02-26 00:34 UT (#1192124-27)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
IC 4305 with SN 2023edc - Earlier Image 2023-04-02 (T+5.5d)
Image below (2023-04-02.980) was taken 5.5 days after discovery of 2023edc
Position of reported SN (distinct) is shown by white cross-hairs
Image
Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2023-04-02 23:38 UT (#1110096-99)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of SN 2023edc (IC 4305) on Supernova 2023 Page >>

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NGC 3893 - Spiral Galaxy with LRN Type Transient AT 2023uhx

NGC 3893 with AT 2023uhx (Ursa Major)
AT 2023uhx (Type: LRN) discovered 2023-10-07.816 UT by Koichi Itagaki
Discovery magnitude 17.2 (Clear filter) vs DSS Archival Image
 Luminous Red Nova based on its peak luminosity, and narrow Balmer and Fe II emission lines.
 ( TNS 2023uhx)
  
NGC 3893 with AT 2023uhx - 2024-02-26 (T+141.2d)
Image below (2024-02-26.049) was taken 141.2 days after discovery of 2023uhx
Position of reported transient (very faint & barely visible) is shown by white cross-hairs
Estimated Magnitude +18.5 (Clear Filter)
Image 
Annotated CCD Image (125% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-02-26 01:13 UT (#1192138-39)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of AT 2023uhx (NGC 3893) on Transients 2023 Page >>

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SN 2023iy - Type Ia Supernova in WISEA J075804.09+562628.0 (non-detection)

SN 2023iy in WISEA Galaxy (Lynx)
In WISEA J075804.09+562628.0
SN 2023iy (Type: Ia) discovered 2023-01-12.885 UT by XOSS
Alias: PSP23A, ZTF23aaaasoh
Discovery Mag 18.12 (w-PI Filter)
 ( TNS 2023iy )
 
WISEA J075804.09+562628.0 - Galaxy
WISEA Galaxy J075804.09+562628.0 is at centre of image
Other galaxies in FOV are
NGC 2468 (catalog mag +15.0) & PGC 2536730 (catalog mag +17.2)
Image
Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-02-26 00:01 UT (#1192110-14)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
SN 2023iy - 2024-02-25 (T+409.1d)
Image below (2024-02-25.994) was taken 409.1 days after discovery of 2023iy
Position of earlier SN (no longer visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +18.0 (Clear Filter)
Image
Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-02-26 00:01 UT (#1192110-14)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of SN 2023iy (in WISEA Galaxy) on Supernova 2023 Page >>

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PGC 23705 - Spiral Galaxy

PGC 23705 (Cancer)
PGC 23705 (catalog mag +14.0)
with adjacent galaxy PGC 23702  (catalog mag +15.6)

Image

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 22:03 UT (#1192094-98)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
PGC 23705 - Detail

Image

Annotated CCD Image (125% size, square root scale, cropped)
Image details as above
 
 

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UGC 3174 - Irregular Galaxy with Type IIb Supernova 2023mut

UGC 3174 with SN 2023mut (Orion)
SN 2023mut (Type: IIb) discovered 2023-07-11.180 UT by ASAS-SN  / GOTO Group
Alias: ASASSN-23fh
Discovery Magnitude 15.2 (g-SLOAN Filter)
 ( TNS 2023mut )
 
UGC 3174 with SN 2023mut - 2024-02-25 (T+229.7d)
Image below (2024-02-25.838) was taken 229.7 days after discovery of 2023mut
Position of reported SN (fading) is indicated by white cross-hairs.
Estimated Magnitude +17.4 (Clear Filter)
Image
Annotated CCD Image (150% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-02-25 20:13 UT (#1192037-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of SN 2023mut (in UGC 3174) on Supernova 2023 Page >>

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UGC 11858 - Spiral Galaxy with Type Ia Supernova 2023rjj (non-detection)

UGC 11858 with SN 2023rjj (Cygnus)
SN 2023rjj (Type: Ia) discovered 2023-09-05.340 UT by ALeRCE
Alias: ZTF23abaxkwq
Discovery Magnitude 18.17 (g-ZTF Filter)
 ( TNS 2023rjj )
 
UGC 11858 with SN 2023rjj - 2024-02-26 (T+173.8d)
Image below (2024-02-26.181) was taken 173.8 days after discovery of 2023rjj
Position of reported transient (not visible) is indicated by white cross-hairs.
Poor quality image (bright moonlit skies, single frame)
Image
Annotated CCD Image (150% size, square root scale, cropped)
180s exposure (single frame), 3x3 binning, Clear Filter
2024-02-26 04:20 UT (#1192148)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
UGC 11858 with SN 2023rjj - Earlier Image, 2023-09-08 (T+3.6d)
Image below (2023-09-08.900) was taken 3.6 days after discovery of 2023rjj
Position of reported supernova (faint but distinct) is indicated by white cross-hairs.
Measured Magnitude ? (unable to differentiate SN from nucleus)
Image
Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2023-09-08 21:45 UT (#1141045-49)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Images of SN 2023rjj (in UGC 11858) on Supernova 2023 Page >>

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