David's Astronomy Pages
CCD Images - Session 912 (2021-09-07)

Objects Session Notes
Bullet C/2019 L3 (ATLAS) - Comet
   
Bullet GCVS RR Lyr - Variable Star (RR Lyr Type)
Bullet Nova Per 2020 - Nova (V1112 Per, AT2020abap)
Bullet Nova Cas 2021 - Nova (V1405 Cas)
   
Bullet Du 1 - Planetary Nebula (attempt)
Bullet K3-83 - Planetary Nebula
   
Bullet M33 - Spiral Galaxy with Transient AT2021wcf
   
Bullet NGC 514 - Spiral Galaxy with Type Ia Supernova 2020uxz
Bullet NGC 660 - Spiral Galaxy
Bullet NGC 940 - Spiral Galaxy with Type Ia Supernova 2021vtl
Bullet NGC 6184 - Spiral Galaxy with Type Ia Supernova 2021wkv
Bullet NGC 6500 - Spiral Galaxy with Type Ia Supernova 2021wuf
   
Bullet UGC 505 - Spiral Galaxy with Type Ia Supernova 2021ukt
Bullet UGC 2605 - Irregular Galaxy with Type II Supernova 2021wvw
Bullet UGC 4002 - Spiral Galaxy with Type II Supernova 2021wvy
Bullet UGC 10607 - Spiral Galaxy with Type Ia Supernova 2021xgx
    
Bullet Variable Stars (photometric monitoring)
- RX And, U Her, SS Cyg, BL Lac, RR Lyr, Per DY, GK Per
    
Bullet Nearby Stars (astrometric monitoring)
- HH And, Groombridge 34, EV Lac
  
   
- Full night Session (6.9 hours).
- Good sky conditions
- Main aims of the session were to acquire a selection of targets as conditions allowed
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature: 11°C (min)
- CCD Temperature:  -5°/-10°C
- Notes from 2021-09-07 >>
   [ Local Files >> ]  
-  
   

C/2019 L3 (ATLAS) - Comet

C/2019 L3 (ATLAS)  - 2021-09-08
(passing through Lynx)
Sun Distance 3.73 AU (approaching)
Earth Distance 4.04 AU (604.5 million km)
   C/2019 L3 (ATLAS)  - 2021-09-08, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 46.29 arcsec/hr, Dec -11.73 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
2 x 45s exposure (average combine), 3x3 binning, C Filter
2021-09-08 01:37 UT (#912150-51)
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
2021-09-08 01:41 UT (#912150-58)
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 >>    

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GCVS RR Lyr - Variable Star (RR Lyr Type)

GCVS RR Lyr (Lyra)
RR Lyr, Period 0.5669 days
 
GCVS RR Lyr (Lyra)
Image
CCD Image (100% size, linear scale, cropped)
3 x 15s exposure (average combine), 3x3 binning, V Filter
2021-09-07 21:47 UT (#912019-25)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
RR Lyr Spectra - Rotated
Image
Annotated CCD Image (35% size, linear scale)
3 x 30s exposure (average combine), 2x2 binning, S Filter
2021-09-07 21:49 UT (#912021-27)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
RR Lyr Spectra - Rotated
Image
CCD Image (100% size, log scale, rotated, cropped)
Image details as above
 
RR Lyr Spectra - Calibrated & Normalised
.  Calibrated using one point calibration in RSpec 2.0.0
1) Zero Order Star at 0 A + dispersion of 25.5 A/pixel
Normalised on continuum  at 5500 A on
Image
Spectra produced in RSpec 2.0.0 using Image taken with Star Analyser 200
3 x 30s exposure (average combine), 2x2 binning, S Filter
2021-09-07 21:49 UT (#912021-27)
12" LX200R (at f/10.4) + ST-10XME
 
Image
Spectra produced in RSpec 2.0.0 using Image taken with Star Analyser 200
Synthesis & Colour Filled
Image details as above
 
 

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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 - 2021-09-08 (T+286.2d)
Image below (2021-09-08.048) was taken 286.2 days after discovery of nova
Nova is shown by white cross hairs.  Measured magnitude +15.35 (falling)
Image
Annotated CCD Image (100% size, linear scale, cropped)
5 x 90s exposure (average combine), 3x3 binning, C Filter
2021-09-08 01:14 UT (#912132-36)
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 - 2021-09-07 (T+173.5d)
Image below (2021-09-07.950) was taken 173.5 days after discovery of Nova
Nova is shown by white cross hairs.  Measured magnitude +7.83
Note: star object is saturated and shows some blooming, mag is probably underestimated
(linked with Detection Threshold = 50)
Image
CCD Image (100% size, linear scale, cropped)
5 x 30s exposure (average combine), 3x3 binning, C Filter
2021-09-07 22:50 UT (#912055-59)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Image
CCD Image (50% size, linear scale)
Image details as above
 
Nova Cas 2021 (V1405 Cas) Spectra - 2021-09-07 (T+173.5d)
Image
Spectra produced in AstroMain using Image taken with Star Analyser 200
5 x 30s exposure (average combine), 2x2 binning, S Filter
2021-09-07 22:53 UT (#912060-64)
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 >>
 
Nova Cas 2021 (V1405 Cas) Spectra - Calibrated
.  Calibrated using two point calibration in RSpec 2.0.0
1) Zero Order Star at 0 and 2) Ha emission line at 6563 A. 
Giving calibration scale of 25.5 Angstroms/pixel
Image
Spectra produced in RSpec 2.0.0 using Image taken with Star Analyser 200
5 x 30s exposure (average combine), 3x3 binning, C Filter
2021-08-24 00:57 UT (#907051-55)
12" LX200R (at f/10.4) + ST-10XME
 
Nova Cas 2021 (V1405 Cas) Spectra - Corrected
.  Calibrated Spectra corrected using Instrument Response determined from Reference Star HIP 115566 / SAO 20610 (Type B9III)
taken at same altitude (85 deg) as Nova Cas 2021

V1405 Cas is reported to have a Classical Nova Spectrum

cf. V1405 Cas Spectrum by Raymond Kneip, 2021-03-19
Image
Spectra produced in RSpec 2.0.0 using Image taken with Star Analyser 200
Image details as above
 
Image
Spectra produced in RSpec 2.0.0 using Images taken with Star Analyser 200
Displayed using RSpec Presentation Manager
Image details as above
 
Images of Nova Cas 2021 on Novae Page >>

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Du 1 - Planetary Nebula (attempt)

Du 1 (Cygnus)
Ast. Now DeepSky Challenge Object, Sep 2012

No indication of planetary nebula in image below
 (30 mins total exposure)
Image
CCD Image (150% size, square root scale, cropped)
10 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-07 22:16 UT (#912032-41)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
   
Du 1  - reference image
HaRGB Composite with 9 hour total exposure time
http://www.capella-observatory.com/ImageHTMLs/PNs/Du1.htm
Original image cropped and reduced to the
same size as my b/w image above
Image
HaRGB Composite image (cropped)
 Skinakas Observatory, Crete, 2011
60 cm instrument + SBIG STX16803
Credit :  Josef Pöpsel & Stefan Binnewies (Germany)
http://www.capella-observatory.com/
  
Du 1  (attempt) - Earlier Detail (2019)
No sign of the presumptive planetary nebula in this image
(4 min total exposure time)
Image
CCD Image (150% size, cropped)
4 x 60s exposure (average combine), 3x3 binning, C Filter
2019-08-21 01:24 UT (#681035-38)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
  
Image
Negative CCD Image (150% size, cropped)
Image details as above
  
Du 1- Earlier Wider View (2019)
Ast. Now DeepSky Challenge Object, Sep 2012
Image
Annotated CCD Image (50% size)
4 x 60s exposure (average combine), 3x3 binning, C Filter
2019-08-21 01:24 UT (#681035-38)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
   
  

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K3-83 - Planetary Nebula

K3-83 (Cygnus)
Position of K3-3 shown by white cross-hairs
30 mins total exposure
A larger planetary nebula (Du-1), which was the principal target for imaging, 
lies at the centre of the field of view but is too faint to be visible
 (see Du-1 attempt above)
Image
CCD Image (70% size, square root scale, cropped)
10 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-07 22:16 UT (#912032-41)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
   
  
K3-83
Picture cropped to position K3-83 at centre of image
Image
Annotated CCD Image (100% size, square root scale, cropped)
Image details as above
  
K3-83 - Detail
Image
Annotated CCD Image (200% size, square root scale, cropped)
Image details as above
  
Image
Negative CCD Image (200% size, cropped)
Image details as above
  
Du 1- Earlier Wider View (2019)
Ast. Now DeepSky Challenge Object, Sep 2012
Image
Annotated CCD Image (50% size)
4 x 60s exposure (average combine), 3x3 binning, C Filter
2019-08-21 01:24 UT (#681035-38)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
   
  

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M33 - Spiral Galaxy with Transient AT2021wcf

M33 with AT2021wcf (Triangulum)
AT2021wcf (Type: unk) discovered 2021-07-20.704 UT by Koichi Itagaki
Alias: Gaia21duh, Nova M33 2021-07a?, TCP J01333854+3035364
Discovery Magnitude 18.5 (g-Gaia Filter)
 (Rochester Supernova site | Rochester EGN Page |  Nick James image |

AT2021wcf is a blue transient / possibly a nova
[ TNS 2021wcf | Gaia21duh ]
 
M33 with AT 2021wcf - 2021-09-08 (T+49.3d)
Image below (2021-09-08.020) was taken 49.3 days after discovery of 2021wcff
The reported transient (very faint) is shown by white cross-hairs
Image 
Annotated CCD Image  (200% size, square root scale, cropped
4 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-08 00:36 UT (#912117-20)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 

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NGC 514 - Spiral Galaxy with Type Ia Supernova 2020uxz

NGC 514 (Pisces)
Spiral Galaxy with Type Ia Supernova
[ Supernovae ]

SN 2020uxz (Type 1a), discovered 2020/10/05.573 by Koichi Itagaki
 (Rochester Supernova site | Discovery Image | )
 
NGC 514 with SN 2020uxz - 2021-09-08 (T+337.4d)
Image below (2021-09-08.004) was taken 337.4 days after discovery of 2020uxz
Position of earlier SN (faded & no longer visible) is shown by white cross hairs. 
Non-Detection Limiting Magnitude +18.8 (Clear Filter)
Image
Annotated CCD Image  (100% size, square root scale, cropped)
5 x 120s exposure (average combine), 3x3 binning, C Filter
2021-09-08 00:12 UT (#912107-11)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2020uxz (NGC 514) on Supernovae 2020 Page >>
 

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NGC 660 - Spiral Galaxy

NGC 660 (Pisces)
cf. Ast. Now Sep 2021, p70
 
Image
Annotated CCD Image (70% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-08 02:33 UT (#912191-95)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Image
Negative CCD Image (70% size, square root scale)
Image details as above
 
 

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NGC 940 - Spiral Galaxy with Type Ia Supernova 2021vtl

NGC 940 with SN2021vtl (Triangulum)
SN 2021vtl (Type: Ia) discovered 2021-08-11.930 UT by XOSS
Alias: PSP21D, Gaia21duk, PSN J02292803+3138385
Discovery Magnitude 17.3 (Clear Filter)
vs Prior Non-Detection Limiting Magnitude 18.0
Confirmed SN Ia
 ( TNS 2024ivo | Gaia21duk )  
 
NGC 940 with SN 2021vtl - 2021-09-08 (T+27.2d)
Image below (2021-09-08.115) was taken 27.2 days after discovery of 2021vtl
SN (distinct) is shown by white cross-hairs
Estimated Magnitude +16.0 (Clear Filter)
Image
Annotated CCD Image  (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-08 02:54 UT (#912198-202)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021vtl (NGC 940) on Supernovae 2021 Page >>

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NGC 6184 - Spiral Galaxy with Type Ia Supernova 2021wkv

NGC 6184 with SN 2021wkv (Hercules)
SN 2021wkv (Type: Ia, zhost=0.027329) discovered 2021/08/20.277 UT by ATLAS
Alias: ATLAS21bgqy.  Magnitude +18.2 at discovery
 (Rochester Supernova site | Rafa Ferrando image )
   
NGC 6184 with SN 2021wkv - 2021-09-07 (T+18.6d)
Image below (2021-09-07.876) was taken 18.6 days after discovery of 2021wkv
SN position is shown by white cross-hairs.
Measured mag +15.85 (Clear Filter)
Image Link using Detection Threshold of 30.0
Image
Annotated CCD Image  (125% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-07 21:10 UT (#912004-08)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021wkv (NGC 6184) on Supernovae 2021 Page >>

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NGC 6500 - Spiral Galaxy with Type Ia Supernova 2021wuf

NGC 6500 with SN2021wuf (Hercules)
SN 2021wuf (Type: Ia) discovered 2021-08-23.372 UT by ATLAS
Alias: ATLAS21bgsc
 (Rochester Supernova site | Mantero Andrea image )
   
NGC 6500 with SN2021wuf - 2021-09-07 (T+15.5d)
NGC 6500 (catalog mag + 12.2 or +13.3)
NGC 6501 / PGC 61128 (catalog mag + 12.4 or +13.9)
 
SN position in NGC 6500 is shown by white cross-hairs.
Bright star in image is HIP 87823 / SAO 103226 (mag +6.7)
Image
Annotated CCD Image  (50% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-07 21:32 UT (#912011-15)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 6500 with SN2021wuf - 2021-09-07 pm (T+15.5d)
Image below (2021-09-07.891) was taken 15.5 days after discovery of 2021wuf
SN position is shown by white cross-hairs.
Measured mag +14.1
Image Link using Detection Threshold of 25.0
Image
Annotated CCD Image  (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-07 21:32 UT (#912011-15)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021wuf (NGC 6500) on Supernovae 2021 Page >>

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UGC 505 - Spiral Galaxy with Type Ia Supernova 2021ukt

UGC 505 with SN2021ukt (Cetus)
SN 2021ukt (Type: Ia) discovered 2021/07/31.441 UT by ZTF
Alias: ZTF21abpxquj, Gaia21dsv
( Rochester Supernova site | Stan Howerton image | Gaia21dsv
 
UGC 505 with SN 2021ukt - 2021-09-07 (T+38.5d)
Image below (2021-09-07.990) was taken 38.5 days after discovery of 2021ukt
SN position is shown by white cross-hairs.
Measured magnitude +16.37 (Clear Filter)
Image
CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-07 23:53 UT (#912099-103)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021ukt (UGC 505) on Supernovae 2021 Page >>
 

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UGC 2605 - Irregular Galaxy with Type II Supernova 2021wvw

UGC 2605 with SN2021wvw (Perseus)
SN 2021wvw (Type: II, z=0.009944) discovered 2021-08-24.606 UT by PS1
Alias: PS21jnb
Host Alias : PGC 12073
 (Rochester Supernova site
 
UGC 2605 with SN 2021wvw - 2021-09-08 (T+14.5d)
Image below (2021-09-08.144) was taken 14.5 days after discovery of 2021wvw
Supernova (faint but still distinct) shown by white cross-hairs
Measured magnitude +17.42 (Clear Filter)
Image
Annotated CCD Image (125% size, square root scale, cropped)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-08 03:35 UT (#912224-27)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021wvw (UGC 2605) 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 +18.09 (r-ZTF Filter)
 ( Rochester Supernova site )
[ TNS 2021wvy | Gaia21dym ]
 
UGC 4002 with SN 2021wvy - 2021-09-08 (T+15.5d)
Image below (2021-09-08.033) was taken 15.5 days after discovery of 2021wvy
Position of reported transient (faint) is shown by white cross-hairs
Estimated Magnitude +17.3 (Clear Filter)
Image 
Annotated CCD Image  (150% size, square root scale, cropped
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-08 00:57 UT (#912124-28)
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 10607 - Spiral Galaxy with Type Ia Supernova 2021xgx

UGC 10607 with SN2021xgx (Hercules)
SN 2021xgx (Type: Ia) discovered 2021-08-29.711 UT by ASAS-SN
Alias: ASASNS-21qp, Gaia21ebg
Discovery Magnitude 17.05 (g-SLOAN filter)
( Rochester Supernova site | Manfred Mrotzek image |
( TNS 2021xgx | Gaia21ebg )
 
UGC 10607 with SN 2021xgx - 2021-09-07 (T+9.3d)
Image below (2021-09-07.963) was taken 9.3 days after discovery of 2021xgx
SN position (not separately visible) is shown by white cross-hairs.
Measured magnitude  (SN + Galaxy Nucleus) +14.21 (Clear Filter)
Image
CCD Image (125% size, log scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-07 23:15 UT (#912073-77)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021xgx (UGC 10607) on Supernovae 2021 Page >>
 

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