David's Astronomy Pages
Images - Session 1414 (2026-03-31)

Objects Session Notes
Bullet 24P/Schaumasse - Comet
 
Bullet C/2025 L1 (ATLAS) - Comet  (non-detection)
Bullet C/2026 B2 (Sun-Gao) - Comet  (non-detection)
 
Bullet AT 2026eva - Type CV? Transient
Bullet AT 2026gze - CV Type Transient
Bullet AT 2026hix - Type CV? Transient
 
Bullet M35 - Open Cluster
 
Bullet NGC 4205 - Spiral Galaxy with Type Ia Supernova 2026fvx
Bullet NGC 4914 - Elliptical Galaxy with Type Ia Supernova 2026fjc
 
Bullet UGC 4316 - Spiral Galaxy with Type Ic Supernova 2025advo
Bullet UGC 9533 - Spiral Galaxy with Type unconf Transient AT 2026hvo  (non-detection)
 
- M31N 2025-10a attempt failed (due to cloud)
29P/Schwassmann-Wachmann attempt failed (due to bright moonlit sky)
 
Bullet Variable Stars (photometric monitoring)
- T CrB, AM Her, BL Lac, ER UMa
 
Bullet Nearby Stars (astrometric monitoring)
- CN Leo (Wolf 359)
 
- All-Night Session (8.3 hr) interupted for software issues and some cloud.
- 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 2026-03-31 >>
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Observing Result

Image

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24P/Schaumasse  - Comet

24P/Schaumasse - 2026-04-01
(passing through Serpens)

Sun Distance 1.59 AU
Earth Distance 0.69 AU (102.8 million km)
   24P/Schaumasse - 2026-04-01 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -37.4 arcsec/hr, Dec -10.2 arcsec/hr)
Image    Image
Annotated CCD Image (50% size, square root scale)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter
2026-04-01 01:54 UT (#1414123-25)
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)
8 x 60s exposure (average combine), 3x3 binning, Clear Filter
2026-04-01 01:57 UT (#1414123-30)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
      
Images of Comet_24P_Schaumasse on Comets 2026 Page  >>     

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C/2025 L1 (ATLAS)  - Comet  (non-detection)

C/2025 L1 (ATLAS) - 2026-04-01
(passing through Bootes)

Sun Distance 1.97 AU
Earth Distance 1.14 AU (169.9 million km)
Expected position of comet (not visible) is shown by white circle
   C/2025 L1 (ATLAS) - 2026-04-01 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -115.9 arcsec/hr, Dec 177.1 arcsec/hr)
Expected position of comet (not visible) is shown by white circle
Image    Image
Annotated CCD Image (50% size, square root scale)
3 x 60s exposure (average combine), 3x3 binning, Clear Filter
2026-04-01 00:31 UT (#1414086-88)
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
2026-04-01 00:34 UT (#1414086-93)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
      
Images of C2025_L1_ATLAS on Comets 2026 Page  >>     

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C/2026 B2 (Sun-Gao)  - Comet  (non-detection)

C/2026 B2 (Sun-Gao) - 2026-04-01
(passing through Pegasus)

Sun Distance 1.74 AU
Earth Distance 2.45 AU (366.5 million km)
   C/2026 B2 (Sun-Gao) - 2026-04-01 Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 98.1 arcsec/hr, Dec 36.5 arcsec/hr)
Expected posituon of comet (not visible) is shown by white circle.
Image    Image
Annotated CCD Image (50% size, square root scale)
2 x 90s exposure (average combine), 3x3 binning, Clear Filter
2026-04-01 03:23 UT (#1414141-42)
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)
6 x 90s exposure (average combine), 3x3 binning, Clear Filter
2026-04-01 03:30 UT (#1414142-52)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
      
Images of C2026_B2_Sun-Gao on Comets 2026 Page  >>     

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AT 2026eva  - Type CV? Transient

AT 2026eva (Orion)
AT 2026eva (Type: CV?) discovered 2026-03-03.154 UT by GEOTS
Alias: GEOTS-Balaji-2026-002
Discovery Magnitude 16.6 (Clear- Filter)
vs Prior Non-Detection Limiting Magnitude 18 (Clear- Filter)
Discovered in Ori using 14" f/2.0 Astrograph at Golden Ears Observatory (MPC code U55). Group reports a variable star candidate not currently archived in the VSX database. Analysis of ASAS-SN (All-Sky Automated Survey for SuperNovae) light curves reveals a brightness fluctuation exceeding 1.0 magnitude, suggesting a potential long-period variable or high-amplitude eclipsing system.
( TNS 2026eva )
 
AT 2026eva - 2026-03-31 (T+28.7d)
Image below (2026-03-31.842) was taken 28.7 days after discovery of 2026eva
Position of earlier transient (faint) is shown by white cross-hairs
Measured Magnitude +16.27 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-31 20:19 UT (#1414005-08)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2026eva on Transients 2026 Page  >>

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AT 2026gze  - CV Type Transient

AT 2026gze (Cancer)
AT 2026gze (Type: CV) discovered 2026-03-21.817 UT by LAST
Alias: TCP J08460573+1047397
Discovery Magnitude 14.5 (Clear- Filter)
vs Prior Non-Detection Limiting Magnitude 15.4 (Clear- Filter)
NMW-TexasTech transient survey (135mm telephoto lens + unfiltered QHY600M CMOS camera). The NMW-TexasTech survey operates at TTU Preston Gott Skyview Observatory (Shallowater, Texas).
( TNS 2026gze )
 
AT 2026gze - 2026-03-31 (T+10.1d)
Image below (2026-03-31.890) was taken 10.1 days after discovery of 2026gze
Position of earlier transient (faint but distinct) is shown by white cross-hairs
Measured Magnitude + (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, Clear Filter
2026-03-31 21:24 UT (#1414028-31)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2026gze on Transients 2026 Page  >>

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AT 2026hix  - Type CV? Transient

AT 2026hix (Canis Minor)
AT 2026hix (Type: CV?) discovered 2026-03-25.730 UT by XOSS
Alias: KATS26F003
Discovery Magnitude 16.23 (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/kats26f003.html
( TNS 2026hix )
 
AT 2026hix - 2026-03-31 (T+6.1d)
Image below (2026-03-31.858) was taken 6.1 days after discovery of 2026hix
Position of earlier transient (very faint) is shown by white cross-hairs
Measured Magnitude +17.16 (Clear Filter)
Image
Annotated CCD Image (100% size, linear scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-31 20:43 UT (#1414012-15)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2026hix on Transients 2026 Page  >>

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M35  - Open Cluster

M35 (Gemini)
[ Open Star Clusters ]  [ Messier Objects
Image
Annotated CMOS Image (16% size, linear scale (auto-stretched))
25 x 60s exposure (average combine), 1x1 binning, gain 200, OSC
2026-03-31 23:56 UT (#)
TS 80mm APO + ZWO ASI178MC
Auto-guided using 12" LX200R + ST-10XME & PHD2
 
M35 - Detail
Image
Annotated CMOS Image (25% size, linear scale (auto-stretched), cropped)
25 x 60s exposure (average combine), 1x1 binning, gain 200, OSC
2026-03-31 23:56 UT (#)
TS 80mm APO + ZWO ASI178MC
Auto-guided using 12" LX200R + ST-10XME & PHD2
 
M35 - Earlier Image (2017)
CMOS Colour Image , Live Stacking
Image
CMOS Colour Image (16% size) - Live Stacking of 18 frames,
3 mins (18 x 10s), Binning 1x1, Gain 400, Raw16, ROI 3096x2080 (Full)
2017-01-18 22:43h UT, D #22_43_46Z. Non-Guided
TS 80mm f/6 APO + ASI178MC (OSC), Mounted on 12" LX200R
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Displayed using DeepSkyStacker
[ Larger Image (32% size) ]
 
M35 - Earlier Image (2020)
Part of CCD Image Mosaic (50% size)
Image
Part of CCD Image Mosaic (50% size)
45s exposure (single sub), 3x3 binning, C Filter
2020-11-13 21:09 UT (#829090-120)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
[ Full Size image (including NGC 2158), 60% size ]
 

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NGC 4205  - Spiral Galaxy with Type Ia Supernova 2026fvx

NGC 4205 with SN 2026fvx (Draco)
SN 2026fvx (Type: Ia) discovered 2026-03-17.986 UT by ATLAS
Alias: ZTF26aamqluf, ATLAS26dgt
Discovery Magnitude 19.46 (Clear- Filter)
vs Prior Non-Detection Limiting Magnitude 19.97 (Clear- Filter)
( TNS 2026fvx )
 
NGC 4205 with SN 2026fvx - 2026-04-01 (T+14.0d)
Image below (2026-04-01.005) was taken 14.0 days after discovery of 2026fvx
Position of earlier supernova (distinct) is shown by white cross-hairs
Measured Magnitude +12.48 (Clear Filter)
Image
Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-04-01 00:16 UT (#1414078-82)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2026fvx (in NGC 4205) on Supernovae 2026 Page  >>

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NGC 4914  - Elliptical Galaxy with Type Ia Supernova 2026fjc

NGC 4914 with SN 2026fjc (Canes Venatici)
SN 2026fjc (Type: Ia) discovered 2026-03-12.080 UT by ATLAS
Alias: ATLAS26cwi, ZTF26aakqkpn, GOTO26ceh
Discovery Magnitude 18.475 (wide-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.35 (orange-ATLAS Filter)
( TNS 2026fjc )
 
NGC 4914 with SN 2026fjc - 2026-03-31 (T+19.8d)
Image below (2026-03-31.922) was taken 19.8 days after discovery of 2026fjc
Position of earlier supernova (distinct) is shown by white cross-hairs
Measured Magnitude +13.66 (Clear Filter)
Image
Annotated CCD Image (125% size, log scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-31 22:16 UT (#1414064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2026fjc (in NGC 4914) on Supernovae 2026 Page  >>

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UGC 4316  - Spiral Galaxy with Type Ic Supernova 2025advo

UGC 4316 with SN 2025advo (Hydra)
SN 2025advo (Type: Ic) discovered 2025-11-17.144 UT by ATLAS
Alias: ATLAS25ogq, ZTF25acglosh, GOTO25kkf
Discovery Magnitude 16.895 (wide-ATLAS Filter)
vs Prior Non-Detection Limiting Magnitude 19.76 (wide-ATLAS Filter)
( TNS 2025advo )
 
UGC 4316 with SN 2025advo - 2026-03-31 (T+134.7d)
Image below (2026-03-31.874) was taken 134.7 days after discovery of 2025advo
Position of earlier supernova (faint) is shown by white cross-hairs
Measured Magnitude +16.89 (Clear Filter)
Image
Annotated CCD Image (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-03-31 21:06 UT (#1414020-23)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2025advo (in UGC 4316) on Supernovae 2025 Page  >>

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UGC 9533  - Spiral Galaxy with Type unconf Transient AT 2026hvo  (non-detection)

UGC 9533 with AT 2026hvo (Bootes)
Discovery date: 2026-03-29 22:00:00
Discovery Magnitude 15 (L- Filter)
vs Prior Non-Detection Limiting Magnitude ( Filter)
Captured with Seestar S50 during photometric session on EL Boo
( TNS 2026hvo )
 
UGC 9533 - Spiral Galaxy
Alias: PGC 52872 (catalog mag +15.3
Image
Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-04-01 00:53 UT (#1414096-100)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGC 9533 with AT 2026hvo - 2026-04-01 (T+2.1d)
Image below (2026-04-01.031) was taken 2.1 days after discovery of 2026hvo
Position of reported transient (not visible) is shown by white cross-hairs
Non-Detection Limiting Magnitude +19.1 (Clear Filter)
No indication of any object at position of reported transient. Transient is unconfirmed
Image
Annotated CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, Clear Filter
2026-04-01 00:53 UT (#1414096-100)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2026hvo on Transients 2026 Page  >>

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