David's Astronomy Pages
Images - Session 1428 (2026-04-30)

Objects Session Notes
Bullet 29P/Schwassmann-Wachmann - Comet
 
Bullet C/2022 N2 (PANSTARRS) - Comet
 
Bullet KIC 8462852 - Variable Star (Tabby's Star, Boyajian's Star, WTF Star)
 
Bullet AT 2026jyw - Transient
Bullet AT 2026kay - Transient
 
Bullet M31N 2026-04b? - Extragalactic Nova in M31  (non-detection)
 
Bullet NGC 3437 - Spiral Galaxy with Type I Supernova 2026kie
Bullet NGC 3861 - Spiral Galaxy with Type II Supernova 2026ihi
Bullet NGC 5907 - Spiral Galaxy with Type II Supernova 2026kid
 
Bullet UGC 12040 - Spiral Galaxy with Transient AT 2026kux
 
Bullet Variable Stars (photometric monitoring)
- T CrB, CI Cyg, AM Her, RZ LMi, BL Lac, RR Leo, ER UMa, KIC 8462852 (Tabby's Star)
 
Bullet Nearby Stars (astrometric monitoring)
- HH And (Ross 248)
 
- All-Night Session (5.5 hr)
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature: 4.5°C (min)
- CCD Temperature:  -15°/-20°C
- Notes from 2026-04-30 >>
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Observing Result

Image

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29P/Schwassmann-Wachmann  - Comet

29P/Schwassmann-Wachmann - 2026-04-30
(passing through Leo)

Sun Distance 6.31 AU
Earth Distance 5.67 AU (848.1 million km)
   29P/Schwassmann-Wachmann - 2026-04-30 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -4.8 arcsec/hr, Dec 3.2 arcsec/hr)
Measured M2 Magnitude +15.35 (Clear Filter)
Image    Image
Annotated CCD Image (50% size, square root scale)
7 x 90s exposure (average combine), 3x3 binning, Clear Filter
2026-05-01 00:05 UT (#1428075-81)
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)
7 x 90s exposure (average combine), 3x3 binning, Clear Filter
2026-05-01 00:05 UT (#1428075-81)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
      
Images of Comet_29P_Schwassmann-Wachmann on Comets 2026 Page  >>     

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C/2022 N2 (PANSTARRS)  - Comet

C/2022 N2 (PANSTARRS) - 2026-04-30
(passing through Taurus)

Sun Distance 4.50 AU
Earth Distance 5.30 AU (793.4 million km)
   C/2022 N2 (PANSTARRS) - 2026-04-30 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 40.6 arcsec/hr, Dec 3.4 arcsec/hr)
Image    Image
Annotated CCD Image (50% size, square root scale)
2 x 60s exposure (average combine), 3x3 binning, Clear Filter
2026-04-30 21:35 UT (#1428006-07)
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
2026-04-30 21:38 UT (#1428006-12)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
      
Images of C2022_N2_PANSTARRS on Comets 2026 Page  >>     

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KIC 8462852  - Variable Star (Tabby's Star, Boyajian's Star, WTF Star)

KIC 8462852 (Cygnus)
Alias: Tabby's Star, Boyajian's Star, WTF Star
Star shows large irregular dimmings. 1470 ly. Mag +11.7
 
KIC 8462852 (Cygnus)
Position of vairible (distinct) is shown by white cross-hairs
Measured Magnitude +11.70 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
3 x 60s exposure (average combine), 3x3 binning, V Filter
2026-04-30 22:35 UT (#1428038-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Active Monitoring - KIC 8462852  >>

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AT 2026jyw  - Transient

AT 2026jyw (Ophiuchus)
AT 2026jyw (Type: unk) discovered 2026-04-17.498 UT by MASTER
Alias: MASTER OT J170428.77-215420.0
Discovery Magnitude 15.9 (Other- Filter)
vs Prior Non-Detection Limiting Magnitude 19.1 (Other- Filter)
MASTER-OAGH
( TNS 2026jyw )
 
AT 2026jyw - 2026-05-01 (T+13.6d)
Image below (2026-05-01.082) was taken 13.6 days after discovery of 2026jyw
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +15.68 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-05-01 02:07 UT (#1428124-28)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2026jyw on Transients 2026 Page  >>

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AT 2026kay  - Transient

AT 2026kay (Ophiuchus)
AT 2026kay (Type: unk) discovered 2026-04-12.143 UT by ATLAS
Alias: ATLAS26eck, PS26bbr
Discovery Magnitude 16.906 (wide-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 18.67 (orange-ATLAS Filter)
( TNS 2026kay )
 
AT 2026kay - 2026-05-01 (T+18.9d)
Image
Annotated CCD Image (100% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-05-01 01:46 UT (#1428117-21)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
AT 2026kay - 2026-05-01 (T+18.9d)
Image below (2026-05-01.067) was taken 18.9 days after discovery of 2026kay
Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +18.29 (Clear Filter)
Image
Annotated CCD Image (175% size, linear scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-05-01 01:46 UT (#1428117-21)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2026kay on Transients 2026 Page  >>

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M31N 2026-04b? - Extragalactic Nova in M31  (non-detection)

M31 with M31N 2026-04b? (Andromeda)
M31N 2026-04b? (Type: EGN?) discovered 2026-04-23.056 UT by Kamil Hornoch et al.
Alias: PNV J00433502+4146280
[ Messier Objects
 
M31 with M31N 2026-04b? (T+8.0d)
Image
Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-05-01 00:50 UT (#1428091-95)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
M31 with M31N 2026-04b? - 2026-05-01 (T+8.0d)
Image below (2026-05-01.028) was taken 8.0 days after discovery of M31N 2026-04b?
Position of earlier transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +17.9 (Clear Filter)
Image
Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-05-01 00:50 UT (#1428091-95)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of M31N 2026-04b? (in M31) on Transients 2026 Page  >>

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NGC 3437  - Spiral Galaxy with Type I Supernova 2026kie

NGC 3437 with SN 2026kie (Leo)
SN 2026kie (Type: I) discovered 2026-04-22.314 UT by ATLAS
Alias: ATLAS26epm, ZTF26aatzrft
Discovery Magnitude 18.086 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.49 (orange-ATLAS Filter)
( TNS 2026kie )
 
NGC 3437 with SN 2026kie - 2026-04-30 (T+8.7d)
Image below (2026-04-30.985) was taken 8.7 days after discovery of 2026kie
Position of earlier supernova ( ) is shown by white cross-hairs
Estimated Magnitude +15.8 (Clear Filter)
Image
Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-04-30 23:47 UT (#1428068-72)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2026kie (in NGC 3437) on Supernovae 2026 Page  >>

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NGC 3861  - Spiral Galaxy with Type II Supernova 2026ihi

NGC 3861 with SN 2026ihi (Leo)
SN 2026ihi (Type: II) discovered 2026-04-04.401 UT by ATLAS
Alias: ATLAS26dru, GOTO26cvs, BGEM J114504.57+195815.7, ZTF26aardkdm
Discovery Magnitude 18.182 (orange-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 18.41 (orange-ATLAS Filter)
( TNS 2026ihi )
 
NGC 3861 with SN 2026ihi - 2026-05-01 (T+26.6d)
Image below (2026-05-01.013) was taken 26.6 days after discovery of 2026ihi
Position of earlier supernova (faint) is shown by white cross-hairs
Estimated Magnitude +17.4 (Clear Filter)
Image
Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-05-01 00:26 UT (#1428084-88)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2026ihi (in NGC 3861) on Supernovae 2026 Page  >>

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NGC 5907  - Spiral Galaxy with Type II Supernova 2026kid

NGC 5907 with SN 2026kid (Draco)
SN 2026kid (Type: II) discovered 2026-04-22.600 UT by Yasuo Sano
Alias: ATLAS26equ, ZTF26aatswhm
Discovery Magnitude 16.62 (Clear- Filter)
vs Prior Non-Detection Limiting Magnitude 19 (Clear- Filter)
SCT 0.36-m F/11 reflector + FLI ML1001E CCD, Nayoro Hokkaido Japan
( TNS 2026kid )
 
NGC 5907 with SN 2026kid - 2026-04-30 (T+8.3d)
Image below (2026-04-30.910) was taken 8.3 days after discovery of 2026kid
Position of earlier supernova (distinct) is shown by white cross-hairs
Estimated Magnitude +14.7 (Clear Filter)
Image
Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-04-30 21:59 UT (#1428015-19)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2026kid (in NGC 5907) on Supernovae 2026 Page  >>

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UGC 12040  - Spiral Galaxy with Transient AT 2026kux

UGC 12040 with AT 2026kux (Lacerta)
AT 2026kux (Type: unk) discovered 2026-04-24.204 UT by ATLAS
Alias: ATLAS26exf
Discovery Magnitude 18.422 (wide-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.04 (wide-ATLAS Filter)
( TNS 2026kux )
 
UGC 12040 - Spiral Galaxy
Image
Annotated CCD Image (50% size, square root scale)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-05-01 01:26 UT (#1428112-13)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGC 12040 with AT 2026kux - 2026-05-01 (T+6.9d)
Image below (2026-05-01.058) was taken 6.9 days after discovery of 2026kux
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +16.78 (Clear Filter)
Image
Annotated CCD Image (150% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-05-01 01:26 UT (#1428112-13)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGC 12040 w/AT2026kux - Earlier Image
Image
CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2020-07-18 00:34 UT (#795045-48)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2026kux (in UGC 12040) on Transients 2026 Page  >>

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KIC 8462852  - Variable Star (Tabby's Star, Boyajian's Star, WTF Star)

KIC 8462852 (Cygnus)
Alias: Tabby's Star, Boyajian's Star, WTF Star
Star shows large irregular dimmings. 1470 ly. Mag +11.7
 
KIC 8462852 (Cygnus)
Position of vairible (distinct) is shown by white cross-hairs
Measured Magnitude +11.70 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
3 x 60s exposure (average combine), 3x3 binning, V Filter
2026-04-30 22:35 UT (#1428038-40)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Active Monitoring - KIC 8462852  >>

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