David's Astronomy Pages
CCD Images - Session 945 (2021-12-28)

Objects Session Notes
Bullet 67P/Churyumov-Gerasimenko - Comet
Bullet 132P/Helin-Roman-Alu - Comet
Bullet C/2019 L3 (ATLAS) - Comet
   
Bullet Nova Per 2020 - Nova (V1112 Per, AT2020abap)
Bullet Nova Cas 2021 - Nova (V1405 Cas)
   
Bullet AT2021agdv - Variable Star Transient  (GSC 5966:2500)
   
Bullet IC 2149 - Planetary Nebula
   
Bullet NGC 1569 - Irregular Galaxy with Type HPM Transient AT2021aczn
Bullet NGC 1587 - Elliptical Galaxy (LGG 117, VV1104, Holmberg 76)
Bullet NGC 2692 - Spiral Galaxy
Bullet NGC 2713 - Spiral Galaxy
Bullet NGC 2716 - Spiral Galaxy
Bullet NGC 2761 - Spiral Galaxy with Type Ia Supernova 2021aggu
Bullet NGC 7446 - Elliptical Galaxy with Type Ia Supernova 2021agdd
   
Bullet UGC 1161 - Spiral Galaxy with Type Ia Supernova 2020acch
Bullet UGC 1971 - Galaxy with Type II Supernova 2021afkk
Bullet UGC 3855 - Spiral Galaxy with Type II Supernova 2021agco
Bullet UGC 4002 - Spiral Galaxy with Type II Supernova 2021wvy
Bullet UGC 4671 - Spiral Galaxy with Type Ia Supernova 2021afsj
    
Bullet Variable Stars (photometric monitoring)
- SY Cnc, BL Lac, FU Ori
    
Bullet Nearby Stars (astrometric monitoring)
- None
  
   
- Late evening session 6.7 hours, cut short by development of cloud at 03:00
-  
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature: -2°C (min)
- CCD Temperature:  -20°/-25°C
- Notes from 2021-12-28 >>
   [ Local Files >> ]
   

67P/Churyumov-Gerasimenko - Comet

67P/Churyumov-Gerasimenko
(passing through Cancer)
Sun Distance 1.40 AU (receeding)
Earth Distance 0.47 AU (70.6 million km)
Poor contrast due to bright sky & poor sky/cloud
   67P/Churyumov-Gerasimenko - 2021-12-29, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -17.51 arcsec/hr, Dec 9.03 arcsec/hr)
Poor contrast due to bright sky & poor sky/cloud
Image   Image
Annotated CCD Image (50% size, square root scale)
2 x 45s exposure (average combine), 3x3 binning, C Filter
2021-12-29 02:39 UT (#945170-71)
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)
2 x 45s exposure (average combine), 3x3 binning, C Filter
2021-12-29 02:39 UT (#945170-71)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of 67P/Churyumov-Gerasimenko on Comets 2021 Page >>    

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132P/Helin-Roman-Alu - Comet

132P/Helin-Roman-Alu
(passing through Cetus)
Sun Distance 1.75 AU (receeding)
Earth Distance 1.21 AU (181.6 million km)
   132P/Helin-Roman-Alu - 2021-12-28, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 66.03 arcsec/hr, Dec 28.41 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 60s exposure (average combine), 3x3 binning, C Filter
2021-12-28 21:11 UT (#945024-26)
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)
6 x 60s exposure (average combine), 3x3 binning, C Filter
2021-12-28 21:13 UT (#945024-29)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of 132P/Helin-Roman-Alu on Comets 2021 Page >>    

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C/2019 L3 (ATLAS) - Comet

C/2019 L3 (ATLAS)
(passing through Gemini)
Sun Distance 3.56 AU (approaching)
Earth Distance 2.59 AU (388.1 million km)
   C/2019 L3 (ATLAS)  - 2021-12-28, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra -38.93 arcsec/hr, Dec -26.07 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 45s exposure (average combine), 3x3 binning, C Filter
2021-12-28 22:21 UT (#945056-58)
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, C Filter
2021-12-28 22:21 UT (#945053-61)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of C/2019 L3 (ATLAS) on Comets 2021 Page >>    

C/2019 L3 (ATLAS)
Inverse Spectrum
  
C/2019 L3 (ATLAS)  - 2021-12-28
Image
False Colour CCD Image (70% size, log scale)
9 x 45s exposure (average combine), 3x3 binning, C Filter
2021-12-28 22:21 UT (#945053-61)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
 

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Nova Per 2020 - Nova (V1112 Per, AT2020abap)

Nova Per 2020 (Perseus)
Nova in Perseus discovered 2020/11/25.807
[ Novae ]
Nova Per 2020 discovered independently by Seiji Ueda and Stanislav Korotkiy et al
AT2020abap (Type: CV) reported 2020/11/27.230 UT by PGIR
Alias: N Per 2020 , PGIR20fbf, TCP J04291888+4354233, TCP J04291884+4354232, V1112 Per
 
Nova Per 2020 - 2021-12-28 (T+398.1d)
Image below (2021-12-28.938) was taken 398.1 days after discovery of nova
Nova is shown by white cross hairs.  Measured magnitude +15.95
Image
Annotated CCD Image (100% size, linear scale, cropped)
2 x 90s exposure (average combine), 3x3 binning, C Filter
2021-12-28 22:36 UT (#945065-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of Nova Per 2020 on Novae Page >>
 

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Nova Cas 2021 - Nova (V1405 Cas)

Nova Cas 2021 (Cassiopeia)
Nova in Cassiopeia discovered 2021-03-18.4236,  by Yuji Nakamura (Japan)
Magnitude at discovery +9.6 (unfiltered CCD)
AT2021hkn (Type: Nova) reported by 2021/03/30.055 UT by Gaia
Alias: Gaia21bpe, AT2021hkn, V1405 Cas
 
Nova Cas 2021 / AT2021hkn - 2021-12-28 (T+285.4d)
Image below (2021-12-28.872) was taken 285.4 days after discovery of Nova
Nova is shown by white cross hairs.  Measured magnitude +9.13
(linked with Detection Threshold = 50)
Image
Annotated CCD Image (100% size, linear scale, cropped)
5 x 30s exposure (average combine), 3x3 binning, C Filter
2021-12-28 20:56 UT (#945011-15)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Nova Cas 2021 (V1405 Cas) Spectra - 2021-12-28 (T+285.4d)
Image
Spectra produced in AstroMain using Image taken with Star Analyser 200
5 x 30s exposure (average combine), 2x2 binning, S Filter
2021-12-28 21:00 UT (#945016-20)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of Nova Cas 2021 on Novae Page >>

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AT2021agdv - Variable Star Transient  (GSC 5966:2500)

AT2021agdv (Canis Major)
AT2021agdv (Type: Star, class unknown ) discovered 2021-12-07.784 UT by Gaia
Alias: Gaia21fly, GSC 5966:2500
Alert triggered at magnitude +11.24
(vs Historic magnitiude +11.55)
 ( Rochester Supernova site | Gaia21fly
 
AT2021agdv - 2021-12-28 (T+21.2d)
Image below (2021-12-28.998) was taken 21.2 days after discovery of 2021agdv
Measured magnitude +11.45 (fading ?)
(vs previous measurement +11.3,  2021-12-17)
(vs catalog mag +11.4)
Image
Annotated CCD Image  (100% size,  linear scale, cropped)
4 x 60s exposure (average combine), 3x3 binning, C Filter
2021-12-29 00:00 UT (#945100-03)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 

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IC 2149 - Planetary Nebula

IC 2149 (Auriga)
 [ Planetary Nebula ]
Image 
Annotated CCD Image  (50% size, square root scale)
5 x 120s exposure (average combine), 3x3 binning, C Filter
2021-12-28 22:52 UT (#945071-75)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
IC 2149 - Detail
Image 
CCD Image  (150% size, log scale, cropped)
Image details as above
 
IC 2149 - Spectra
Image taken with Star Analyser 200
(zero order image on left, 1st order spectra in middle)
Spectra shows a typical Pl.Neb signature with a central star
Image 
CCD Image  (100% size, square root scale, rotated, cropped)
4 x 90s exposure (average combine), 2x2 binning, S Filter
2021-12-28 23:01 UT (#945076-80)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Image
Spectra produced in AstroMain using Image taken with Star Analyser 200
4 x 90s exposure (average combine), 2x2 binning, S Filter
2021-12-28 23:01 UT (#945076-80)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
 

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NGC 1569 - Irregular Galaxy with Type HP Transient AT2021aczn

NGC 1569 with AT2021aczn (Camelopardalis)
AT2021aczn (Type: HPM) discovered 2021-11-01.000 UT by Jordi Camarasa
(  (Rochester Supernova site | Odd Trondal image )
 HPM - High Proper Motion star ?
 
NGC 1569 - 2021-12-28 (T+58.0d)
Image below (2021-12-28.981) was taken 58.0 days after reported discovery of 2021aczn
No indication of any obvious transient object
(new image again compares well with an image taken in 2013)
Image
CCD Image (125% size, log scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-28 23:42 UT (#945091-95)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 1569 - Earlier Image  2021-11-09 (T+8.9d)
Image below (2021-11-09.898) was taken 8.9 days after reported discovery of 2021aczn
The object marked as a 'Supernova' in Odd Trondal image is shown in the
 image below by white cross-hairs, but the feature doesn't seem
to have changed since image taken in 2013
Image
Annotated CCD Image (125% size, log scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-11-09 21:42 UT (#932060-64)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 1569 - Earlier Image (2013)
Image
CCD Image (125% size, log scale, cropped)
4 x 120 sec exposure (average combine), 3x3 binning, C Filter
2013-10-15 19:08hUT (#549026-31)
12" LX200R  (at f/9.7) + ST-10XME
 
 

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NGC 1587 - Elliptical Galaxy (LGG 117, VV1104, Holmberg 76)

NGC 1587 (Taurus)
Alias: LGG 117, VV1104, Holmberg 76
NGC 1587/1588, Ast. Now Challenge, Dec 2021
[ Deep Sky Challanges (Ast.Now) , Vorontsov-Velyaminov Galaxies ]
Image
Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-28 20:39 UT (#945004-08)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 1587 & NGC 1588 - Detail
Interacting Galaxies
Image
CCD Image (100% size, log scale, cropped)
Image details as above
 
Image
Negative CCD Image (100% size, log scale, cropped)
Image details as above
 

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NGC 2692 - Spiral Galaxy

NGC 2692 (Ursa Major)
Alias:   PGC 25142
(Near to UGC 4671 with SN2021afsj )
Image
Annotated CCD Image  (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-29 01:38 UT (#945141-45)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 2692 - Earlier Wider View Image (2021-12-16)
Image
Annotated CCD Image  (50% size, square root scale)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-16 23:56 UT (#942179-82)
12" LX200R (at f/10.4) + ST-10XME
Non-guided
 

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NGC 2713 - Spiral Galaxy

NGC 2713 (Hydra)
Ast.Now Deep Sky Challenge Object, Mar 2021
[ Deep Sky Challanges (Ast.Now) ]
Image
Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-29 01:59 UT (#945148-52)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 2713 - Detail
Image
CCD Image (100% size, square root scale, cropped)
Image details as above
 
Image
Negative CCD Image (100% size, square root scale, cropped)
Image details as above
 

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NGC 2716 - Spiral Galaxy

NGC 2716 (Hydra)
Ast.Now Deep Sky Challenge Object, Mar 2021
[ Deep Sky Challanges (Ast.Now) ]
Image
Annotated CCD Image (50% size, square root scale)
2 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-29 02:14 UT (#945155-56)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 2716 - Detail
Image
CCD Image (100% size, square root scale, cropped)
Image details as above
 

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NGC 2761 - Spiral Galaxy with Type Ia Supernova 2021aggu

NGC 2761 with SN2021aggu (Cancer)
SN 2021aggu (Type: Ia) discovered 2021-12-12.757 UT by ATLAS
Alias: ATLAS21bnhv, Gaia21fnr
 ( Rochester Supernova site | Gaia21dym ]
 
NGC 2761 with SN2021aggu
Image 
Annotated CCD Image  (50% size, square root scale)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-29 03:00 UT (#945180-82)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 2761 with SN2021aggu - 2021-12-29 (T+16.4d)
Image below (2021-12-29.119) was taken 16.4 days after discovery of 2021aggu
Position of reported SN (faint) is shown by white cross-hairs
Image 
Annotated CCD Image  (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-29 01:16 UT (#945134-38)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021aggu (NGC 2761) on Supernovae 2021 Page >>
 

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NGC 7446 - Elliptical Galaxy with Type Ia Supernova 2021agdd

NGC 7446 with SN2021agdd (Andromeda)
SN 2021agdd (Type: Ia) discovered 2021-12-07.152 UT by DLT40
Alias: DLT21ag
 ( Rochester Supernova site | Discovery Image  )
 
NGC 7446 with SN2021agdd - 2021-12-28 (T+21.8d)
Image below (2021-12-28.913) was taken 21.8 days after discovery of 2021agdd
SN is shown by white cross hairs. 
Measured Magnitude ?? (unable to isolate centroid in CCDSoft)
Image
Annotated CCD Image  (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-28 22:04 UT (#945046-50)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN2021agdd (NGC 7446) on Supernovae 2021 Page >>

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UGC 1161 - Spiral Galaxy with Type Ia Supernova 2020acch 

UGC 1161 with SN 2020acch (Andromeda)
SN 2020acch (Type: Ia,  zhost=0.017072) discovered 2020/12/10.204 UT by ZTF
Alias: ZTF20acvziuf
 ( Rochester Supernova site )
 
UGC 1161 with SN 2020acch  - 2021-12-28 (T+383.7d)
Image below (2021-12-28.891) was taken 383.7 days after discovery of SN 2020acch
Position of earlier SN (no longer visible) is shown by white cross hairs.
Image 
Annotated CCD Image  (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-28 21:32 UT (#945033-37)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGC 1161 with SN 2020acch  - Earlier Image, 2020-12-20 (T+10.6d)
Image below (2020-12-20.774) was taken 10.6 days after discovery of SN 2020acch
SN is shown by white cross hairs.  Magnitude ~ +16.0
Image 
Annotated CCD Image  (150% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2020-12-20 18:34 UT (#840036-38)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2020acch (UGC 1161) on Supernovae 2020 Page >>
 

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UGC 1971 - Galaxy with Type II Supernova 2021afkk

UGC 1971 with SN 2021afkk (Triangulum)
SN 2021afkk (Type: II) discovered 2021-11-25.371 UT by ATLAS
Alias: ATLAS21bmvp.
Magnitude +18.2 at discovery.   Distance 196 Mly (60 Mpc)
 (Rochester Supernova site | Enrico Prosperi image )
 
UGC 1971 with SN 2021afkk - 2021-12-28 (T+33.6d)
Image below (2021-12-28.966) was taken 33.6 days after discovery of 2021afkk
Supernova reported position is shown by white cross-hairs
Measured magnitude +15.25 (SN + Galaxy Nucleus)  - faded since T+3.7d
Image
Annotated CCD Image  (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-28 23:20 UT (#945083-87)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021afkk (UGC 1971) on Supernovae 2021 Page >>

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UGC 3855 - Spiral Galaxy with Type II Supernova 2021agco

UGC 3855 with SN2021agco (Lynx)
SN 2021agco (Type: II) discovered 2021-12-05.564 UT by XOSS
Alias: PSP21al
 ( Rochester Supernova site | Andrea Mantero image | Jordi Camarasa image)
 
UGC 3855 with SN2021agco - 2021-12-29 (T+23.5d)
Image below (2021-12-29.028) was taken 23.5 days after discovery of 2021agco
Position of reported SN (very faint/not visible) is shown by white cross-hairs
Image
Annotated CCD Image  (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-29 00:48 UT (#945120-23)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021agco (UGC 3855) on Supernovae 2021 Page >>

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UGC 4002 - Spiral Galaxy with Type II Supernova 2021wvy

UGC 4002 with SN2021wvy (Lynx)
SN 2021wvy (Type: II) discovered 2021-08-23.520 UT by ZTF
Alias: ZTF21abvdikq, Gaia21dym
Magnitude at discovery +18.02
 ( Rochester Supernova site | Gaia21dym ]
 
UGC 4002 with SN2021wvy - 2021-12-29 (T+127.5d)
Image below (2021-12-29.047) was taken 127.5 days after discovery of 2021wv
Position of earlier SN (no longer visible) is shown by white cross-hairs
Image 
Annotated CCD Image  (150% size, square root scale, cropped
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-29 01:16 UT (#945134-38)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021wvy (UGC 4002) on Supernovae 2021 Page >>
 

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UGC 4671 - Spiral Galaxy with Type Ia Supernova 2021afsj

UGC 4671 with SN2021afsj (Ursa Major)
SN 2021afsj (Type: Ia) discovered 2021-11-29.718 UT by Shuji Tokuoka
Alias: Gaia21flf, ZTF21acqstfo
 ( Rochester Supernova site | Gaia21flf  )
 
UGC 4671 with SN2021afsj - 2021-12-29 (T+29.3d)
Image below (2021-12-29.062) was taken 29.3 days after discovery of 2021afsj
Position of SN is shown by white cross-hairs
Measured magnitude +14.6
Image
Annotated CCD Image  (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-29 01:38 UT (#945141-45)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021afsj (UGC 4671) on Supernovae 2021 Page >>

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