David's Astronomy Pages
CCD Images - Session 942 (2021-12-16)

Objects Session Notes
Bullet 67P/Churyumov-Gerasimenko - Comet
Bullet 132P/Helin-Roman-Alu - Comet
Bullet C/2019 L3 (ATLAS) - Comet
   
Bullet Nova Cas 2021 - Nova (V1405 Cas)
   
Bullet AT 2021rl - BL Type Transient (QSO 0954+658)
Bullet AT 2021xbh - Type Nova? Transient (Attempt)
Bullet AT 2021aena - CV Type Transient (Attempt)
Bullet AT 2021agdv - Variable Star Transient  (GSC 5966:2500)
   
Bullet IC 719 - Spiral Galaxy
   
Bullet NGC 1400 - Elliptical Galaxy with Type Ia Supernova 2021hcz (faided)
Bullet NGC 2955 - Spiral Galaxy
Bullet NGC 3310 - Spiral Galaxy (Herschel IV-60) with SN 2021gmj
Bullet NGC 3836 - Spiral Galaxy with Type II Supernova 2021aefs  (attempt)
Bullet NGC 7446 - Elliptical Galaxy with Type Ia Supernova 2021agdd
   
Bullet SBS 0951+534 - Galaxy
   
Bullet UGC 3855 - Spiral Galaxy with Type II Supernova 2021agco
Bullet UGC 4671 - Spiral Galaxy with Type Ia Supernova 2021afsj
    
Bullet Variable Stars (photometric monitoring)
- U An, Z And, R CrB, SS Cyg, RZ LMi, BL Lac, FO Ori,FU Ori, NV Ori, DY Per, RR Tau
    
Bullet Nearby Stars (astrometric monitoring)
- HH And, CN Leo, Teegardens Star
  
   
- Evening session 11.7 hours
- Targets after 23:50 were unguided due to a PHD2 application failure
- 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 2021-12-16 >>
   [ Local Files >> ]
   

67P/Churyumov-Gerasimenko - Comet

67P/Churyumov-Gerasimenko
(passing through Cancer)
Sun Distance 1.33 AU (receeding)
Earth Distance 0.45 AU (66.7 million km)
   67P/Churyumov-Gerasimenko - 2021-12-17, Detail
Comet's rate of motion
(Ra 107.75 arcsec/hr, Dec 2.12 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 45s exposure (average combine), 3x3 binning, C Filter
2021-12-17 01:04 UT (#942211-13)
12" LX200R (at f/10.4) + ST-10XME
Non-guided
  Annotated CCD Image (100% size, log scale, cropped)
12 x 45s exposure (average combine), 3x3 binning, C Filter
2021-12-17 01:09 UT (#942211-24)
12" LX200R (at f/10.4) + ST-10XME
Non-guided
     
Images of 67P/Churyumov-Gerasimenko on Comets 2021 Page >>    

67P/Churyumov-Gerasimenko - False Colour Image(s) 
Inverse Spectrum
  
67P/Churyumov-Gerasimenko - 2021-12-17
Image
False Colour CCD Image (70% size, log scale)
12 x 45s exposure (average combine), 3x3 binning, C Filter
2021-12-17 01:09 UT (#942211-24)
12" LX200R (at f/10.4) + ST-10XME
Non-guided
 
 

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132P/Helin-Roman-Alu - Comet

132P/Helin-Roman-Alu
(passing through Cetus)
Sun Distance 1.72 AU (receeding)
Earth Distance 1.10 AU (163.9 million km)
   132P/Helin-Roman-Alu - 2021-12-16, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 59.42 arcsec/hr, Dec 25.30 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 60s exposure (average combine), 3x3 binning, C Filter
2021-12-16 19:26 UT (#942008-10)
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)
5 x 60s exposure (average combine), 3x3 binning, C Filter
2021-12-16 19:23 UT (#942004-10)
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 Auriga)
Sun Distance 3.56 AU (approaching)
Earth Distance 2.65 AU (397.0 million km)
   C/2019 L3 (ATLAS)  - 2021-12-17, Detail
Comet's rate of motion
(Ra -34.66 arcsec/hr, Dec -22.22 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 45s exposure (average combine), 3x3 binning, C Filter
2021-12-17 00:55 UT (#942206-08)
12" LX200R (at f/10.4) + ST-10XME
Non-guided
  CCD Image (100% size, log scale, cropped)
8 x 45s exposure (average combine), 3x3 binning, C Filter
2021-12-17 00:53 UT (#942200-08)
12" LX200R (at f/10.4) + ST-10XME
Non-guided
     
Images of C/2019 L3 (ATLAS) on Comets 2021 Page >>    

C/2019 L3 (ATLAS)
Inverse Spectrum
  
C/2019 L3 (ATLAS)  - 2021-12-17
Image
False Colour CCD Image (70% size, log scale)
8 x 45s exposure (average combine), 3x3 binning, C Filter
2021-12-17 00:53 UT (#942200-08)
12" LX200R (at f/10.4) + ST-10XME
Non-Guided
 
 

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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 / AT 2021hkn - 2021-12-16 (T+273.4d)
Image below (2021-12-16.863) was taken 273.4 days after discovery of Nova
Nova is shown by white cross hairs.  Measured magnitude +9.06
(linked with Detection Threshold = 50
Image 
Annotated CCD Image (100% size, linear scale, cropped)
5 x 30s exposure (average combine), 3x3 binning, C Filter
2021-12-16 20:43 UT (#942057-61)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Nova Cas 2021 (V1405 Cas) Spectra - 2021-12-16 (T+273.4d)
Image
Spectra produced in AstroMain using Image taken with Star Analyser 200
5 x 30s exposure (average combine), 2x2 binning, S Filter
2021-12-16 20:47 UT (#942062-66)
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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AT 2021rl - BL Type Transient (QSO 0954+658)

AT 2021rl (Ursa Major)
BL Type Transient, QSO 0954+658, 6C 095456+654857
AT 2021rl (Type: BL) discovered 2021/01/06.449 UT by Gaia
Alias: Gaia21acz
 
Triggering Magnitude 14.21 (vs Historic Magnitude 15.57)
( Gaia21acz
 
AT 2021rl - 2021-12-17 (T+344.7d)
Image below (2021-12-17.124) was taken 344.7 days after discovery of 2021rl
BL Type object shown by white cross hairs.
Measured magnitude +15.1  (vs catalog mag of +15.5)
Image
Annotated CCD Image  (100% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-17 03:08 UT (#942276-80)
12" LX200R (at f/10.4) + ST-10XME
Non-guided
 
Images of AT 2021rl  (QSO 0954+658) on Transients 2021 Page >>

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AT 2021xbh - Type Nova? Transient (Attempt)

AT 2021xbh (Camelopardalis)
AT 2021xbh (Type: Nova?) discovered 2021-08-27.873 UT by XOSS
Alias: KATS21Q001
 ( Rochester Supernova site | KATS21Q001 Image  )
 
Image
Annotated CCD Image  (50% size, linear scale)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-16 22:35 UT (#942117-21)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
AT 2021xbh - Detail, 2021-12-16 (T+111.1d)
Image below (2021-12-16.935) was taken 111.1 days after discovery of 2021xbh
Position of earlier transient (no longer visible) is shown by white circle
Image
Annotated CCD Image  (100% size, linear scale, cropped)
Image details as above
 
Images of AT 2021xbh on Transients 2021 Page >>

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AT 2021aena - CV Type Transient (Attempt)

AT 2021aena (Corvus)
AT 2021aena (Type: CV) discovered 2021-11-11.846 UT by Gaia
Alias: Gaia21fdi

Transient alert triggered at magnitude +14.56
(vs historic magnitiude +17.51)
 ( Rochester Supernova site | Gaia21fdi )
 
Image
Annotated CCD Image  (50% size, linear scale)
4 x 60s exposure (average combine), 3x3 binning, C Filter
2021-12-17 06:11 UT (#942351-55)
12" LX200R (at f/10.4) + ST-10XME
Unguided
 
AT 2021aena - 2021-12-17 (T+35.4d)
Image below (2021-12-17.255) was taken 35.4 days after discovery of 2021aena
Reported position of transient (not visible) is shown by white circle
Star has most-likely faded back to its usual brightness +17.5
Image
Annotated CCD Image  (100% size,  linear scale, cropped)
Image details as above
Unguided
 

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AT 2021agdv - Variable Star Transient  (GSC 5966:2500)

AT 2021agdv (Canis Major)
AT 2021agdv (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 )
 
Image
Annotated CCD Image  (50% size, linear scale)
4 x 60s exposure (average combine), 3x3 binning, C Filter
2021-12-17 01:45 UT (#942235-39)
12" LX200R (at f/10.4) + ST-10XME
Unguided
 
AT 2021agdv - 2021-12-17 (T+9.3d)
Image below (2021-12-17.071) was taken 9.3 days after discovery of 2021agdv
Measured magnitude +11.3
(vs catalog mag +11.4)
Image
Annotated CCD Image  (100% size,  linear scale, cropped)
Image details as above
Unguided
 

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IC 719 - Spiral Galaxy

IC 719 with SN 2021kos (Virgo)
IC 791 contained earlier SN 2021kos (Type: Ib)
discovered 2021/04/19.226 UT by ZTF
Alias: ZTF21aawmdxw, Gaia21ccl
Gaia Alert triggered at mag +18.14
 ( Rochester Supernova site |  Gaia21ccl )
 
IC 719  - Spiral Galaxy
Image below (2021-12-17.208) was taken 242.0 days after discovery of 2021kos
The SN is no longer visible
Poor quality image , image was unguided due to a PHD2 problem
Target to be rescheduled for a later session
Image
CCD Image (100% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-17 05:09 UT (#942328-32)
12" LX200R (at f/10.4) + ST-10XME
Non-Guided
 

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NGC 1400 - Elliptical Galaxy

NGC 1400 (Eridanus)
SN 2021hcz (Type: Ia) discovered 2021/03/24.984 UT by Gaia
Alerting magnitude +15.43
Alias: Gaia21bmx
 ( Rochester Supernova site | Discovery Image  )
 
Image
Annotated CCD Image  (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-16 21:36 UT (#942097-101)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 1400 - Detail
Image below (2021-12-16.893) was taken 266.9 days after discovery of SN 2021hcz
Transient is no longer visible
Poor quality image due to bright moonlight
Image
CCD Image  (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-16 21:36 UT (#942097-101)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021hcz (NGC 1400) on Supernova 2021 Page >>

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NGC 2955 - Spiral Galaxy

NGC 2955 (Leo Minor)
SN 2021jtt (Type: SN) discovered 2021/04/15.199 UT by ZTF
Alias: ZTF21aavoqpl
 ( Rochester Supernova site | Manfred Mrotzek image w/SN 2021jtt )
 
Image
Annotated CCD Image  (50% size, square root scale)
180s exposure (single frame), 3x3 binning, C Filter
2021-12-17 01:23 UT (#942227)
12" LX200R (at f/10.4) + ST-10XME
Non-guided
 
NGC 2955 - Detail
Image below (2021-12-17.056) was taken 245.9 days after discovery of SN 2021jtt
Position of earlier SN (not visible) is shown by white cross-hairs
Earlier SN is presumed to have faded and is no longer visible
Image
CCD Image  (125% size, square root scale, cropped)
Image details as above
 

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NGC 3310 - Spiral Galaxy  (Herschel IV-60) with Type II Supernova 2021gmj

NGC 3310 / Herschel IV-60 with SN 2021gmj (Ursa Major)
SN 2021gmj (Type: II) discovered 2021/03/20.320 UT by DLT40
Alias: ZTF21aaqgmjt, ATLAS21izq
 ( Rochester Supernova site |  Gianluca Masi image)
 
NGC 3310 with SN 2021gmj - 2021-12-17 (T+271.9d)
Image below (2021-12-17.187) was taken 271.9 days after discovery of 2021gmj
SN is no longer visible
Image
CCD Image (100% size, log scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-17 04:40 UT (#942305-08)
12" LX200R (at f/10.4) + ST-10XME
Non-Guided
 
NGC 3310 with SN 2021gmj - Earlier Image, 2021-03-24 (T+4.6d)
Image below (2021-03-24.915) was taken 4.6 days after discovery of 2021gmj
SN position indicated by white cross-hairs
Image
Annotated CCD Image (100% size, log scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-03-24 22:07 UT (#875043-47)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021gmj (NGC 3310) on Supernovae 2021 Page >>

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NGC 3836 - Spiral Galaxy with Type II Supernova 2021aefs (attempt)

NGC 3836 with SN 2021aefs (Crater)
SN 2021aefs (Type: II) discovered 2021-11-09.272 UT by Gaia
Alias: Gaia21fch
Transient Alert triggered at mag +18.36
 ( Rochester Supernova site |  Gaia21fch )
 
NGC 3836 - Spiral Galaxy
Poor quality image - single unguided frame / bright sky
Image
CCD Image (100% size, square root scale, cropped)
180s exposure (single frame), 3x3 binning, C Filter
2021-12-17 05:38 UT (#942340)
12" LX200R (at f/10.4) + ST-10XME
Non-Guided
 
NGC 3836 with SN 2021aefs - 2021-12-17 (T+38.0d)
Image below (2021-12-17.224) was taken 38.0 days after discovery of 2021aefs
Poor quality image - single unguided frame / bright sky
Image
CCD Image (100% size, square root scale, cropped)
180s exposure (single frame), 3x3 binning, C Filter
2021-12-17 05:38 UT (#942340)
12" LX200R (at f/10.4) + ST-10XME
Non-Guided
 
Images of SN 2021aefs (NGC 3836) on Supernovae 2021 Page

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NGC 7446 - Elliptical Galaxy with Type Ia Supernova 2021agdd

NGC 7446 with SN 2021agdd (Andromeda)
SN 2021agdd (Type: Ia) discovered 2021-12-07.152 UT by DLT40
Alias: DLT21ag
 ( Rochester Supernova site | Discovery Image  )
 
NGC 7446 with SN 2021agdd- 2021-12-16 (T+9.7d)
NGC 7446 with adjacent named galaxies NGC 7445 and NGC 7449
plus several other unlabelled galaxies
Image
Annotated CCD Image  (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-16 19:42 UT (#942013-17)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 7446 with SN 2021agdd - 2021-12-16 (T+9.7d)
Image below (2021-12-16.815) was taken 9.7 days after discovery of 2021agdd
SN is shown by white cross hairs.  Measured Magnitude +16.25
Image
Annotated CCD Image  (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-16 19:42 UT (#942013-17)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Image
Negative CCD Image (125% size, square root scale, cropped)
Image details as above
  
 
Images of SN 2021agdd (NGC 7446) on Supernovae 2021 Page >>

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SBS 0951+534 - Galaxy

SBS 0951+534 (Ursa Major)
Galaxy had earlier SN 2021hmc (Type: Ia) discovered 2021/03/29.178 UT by ZTF
Alias: ZTF18acsremz
 ( Rochester Supernova site )
Image
CCD Image (100% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-17 05:56 UT (#942344-47)
12" LX200R (at f/10.4) + ST-10XME
Non-Guided
 
SBS 0951+534 - detail
Image below (2021-12-17.242) was taken 263.1 days after discovery of SN 2021hmc
Image
CCD Image (125% size, square root scale, cropped)
Image details as above
Non-Guided
 
 

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UGC 3855 - Spiral Galaxy with Type II Supernova 2021agco

UGC 3855 with SN 2021agco (Lynx)
SN 2021agco (Type: II) discovered 2021-12-05.564 UT by XOSS
Alias: PSP21al
 ( Rochester Supernova site | Andrea Mantero image | Jordi Camarasa image)
 
Image
Annotated CCD Image  (50% size, square root scale)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-12-17 04:17 UT (#942298-301)
12" LX200R (at f/10.4) + ST-10XME
Non-guided
 
UGC 3855 with SN 2021agco - 2021-12-17 (T+11.6d)
Image below (2021-12-17.172) was taken 11.6 days after discovery of 2021agco
Position of reported SN (very faint) 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
2021-12-17 04:17 UT (#942298-301)
12" LX200R (at f/10.4) + ST-10XME
Non-guided
 
Image
Negative CCD Image (125% size, square root scale, cropped)
Image details as above
 
Images of SN 2021agco (UGC 3855) on Supernovae 2021 Page >>

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UGC 4671 - Spiral Galaxy with Type Ia Supernova 2021afsj

UGC 4671 with SN 2021afsj (Ursa Major)
SN 2021afsj (Type: Ia) discovered 2021-11-29.718 UT by Shuji Tokuoka
Alias: Gaia21flf, ZTF21acqstfo
 ( Rochester Supernova site | Gaia21flf  )
 
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
 
UGC 4671 with SN 2021afsj - 2021-12-16 (T+17.3d)
Image below (2021-12-16.989) was taken 17.3 days after discovery of 2021afsj
Position of SN is shown by white cross-hairs
Measured magnitude +14.0
Image
Annotated CCD Image  (125% size, square root scale, cropped)
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
 
Images of SN 2021afsj (UGC 4671) on Supernovae 2021 Page >>

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