David's Astronomy Pages
CCD Images - Session 909 (2021-08-27)

Objects Session Notes
Bullet 15P/Finlay - Comet
   
Bullet Nova Per 2020 - Nova (V1112 Per, AT2020abap)
Bullet Nova Cas 2021 - Nova (V1405 Cas)
   
Bullet NGC 7767 - Spiral Galaxy with AT2021kni
   
Bullet UGC 505 - Spiral Galaxy with Type Ia Supernova 2021ukt
Bullet UGC 2605 - Irregular Galaxy with Type II Supernova 2021wvw
Bullet UGC 3240 - Spiral Galaxy with Type Ia Supernova 2021vau
    
  - (2) Pallas attempt failed (incorrect position)
    
Bullet Variable Stars (photometric monitoring)
- RX And, U And, Z And, CI Cyg, SS Cyg, BL Lac, DY Per

- SS Cyg attempt failed (cloud)

    
Bullet Nearby Stars (astrometric monitoring)
- HH And, 61 Cyg, Groombridge 34, EV Lac
  
   
- All Night Session (6.4 hours).
- Main aims of the session were to acquire a selection of targets as conditions allowed
- Early issues due to Observer errors (lens cap left on, action leading to cable wrap/scope to power off)
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature: 5°C (min)
- CCD Temperature:  -10°/-15°C
- Notes from 2021-08-27 >>
   [ Local Files >> ]  
-  
- Aurora Images/Video from 2021-08-27 >>
   

15P/Finlay - Comet

15P/Finlay
(passing through Gemini)
Sun Distance 1.19 AU (receeding)
Earth Distance 1.41 AU (210.7 million km)
Comet position is shown by white cross-hairs
   15P/Finlay - 2021-08-28, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 120.55 arcsec/hr, Dec 4.80 arcsec/hr)
Comet (faint) shown by white cross-hairs
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 60s exposure (average combine), 3x3 binning, C Filter
2021-08-28 01:48 UT (#909160-62)
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)
 7 x 60s exposure (average combine), 3x3 binning, C Filter
2021-08-28 01:50 UT (#909160-67)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
     
Images of 15P/Finlay on Comets 2021 Page >>    

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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 - 2021-08-28 (T+275.2d)
Image below (2021-08-28.028) was taken 275.2 days after discovery of nova
Nova is shown by white cross hairs.  Measured magnitude +15.3 (fading)
Image
Annotated CCD Image (100% size, linear scale, cropped)
4 x 90s exposure (average combine), 3x3 binning, C Filter
2021-08-28 00:46 UT (#909124-27)
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 >>
 
Nova Per 2020 (V1112 Per) Spectra
Very dim spectra, but H-beta and H-alpha emission lines are apparent
Image
Annotated CCD Image (100% size, square root scale, cropped)
4 x 60s exposure (average combine), 2x2 binning, S Filter
2021-08-28 00:52 UT (#909128-32)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 

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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 - 2021-08-27 (T+162.6d)
Image below (2021-08-27.990) was taken 150.9 days after discovery of Nova
Nova is shown by white cross hairs.  Measured magnitude +7.94
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
2021-08-27 23:46 UT (#909081-85)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Nova Cas 2021 (V1405 Cas) Spectra - 2021-08-27 (T+162.6d)
Image
Spectra produced in AstroMain using Image taken with Star Analyser 200
5 x 30s exposure (average combine), 2x2 binning, S Filter
2021-08-27 23:49 UT (#909086-90)
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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NGC 7767 - Spiral Galaxy with AT2021kni (unconfirmed)

NGC 7767 with AT2021kni (Pegasus)
AT2021kni (Type: unk) discovered 2021/04/26.766 UT by Koichi Itagaki
Alias: PSN J23505558+2705349, Gaia21cvt
( Rochester Supernova site | Discovery Image | Enrico Prosperi image | Gaia21cvt )
 
NGC 7767 with AT2021kni - 2021-08-28 (T+123.2d)
Image below (2021-08-28.006) was taken 123.2 days after discovery of 2021kni
Position of reported transient is shown by white circle.
No clear definitive evidence of object at reported position.
Transient AT2021kni has probably faded to below limiting magnitude of image (~ +18.0)
Gaia observations (Gaia21cvt) on 2021-08-06 indicate that AT2021kni had faded to +19.74
Image
CCD Image (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-08-28 00:18 UT (#909107-11)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT2021kni (NGC 7767) on Supernovae 2021 Page >>
 
NGC 7767 and adjacent galaxies (Part of Abell 2666) - Wide View
NGC 7767 (catalog mag +13.5), NGC 7768 (catalog mag +12.3),
NGC 7765 (catalog mag +14.7), NGC 7766 (catalog mag +16.7),
PGC 1798869 (catalog mag +17.3)
Image
CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-08-28 00:18 UT (#909107-11)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 7767 and adjacent galaxies (Part of Abell 2666) - Detail
Image
CCD Image (100% size, square root scale, cropped)
Image details as above
 
 

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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 SN2021ukt - 2021-08-28 (T+27.6d)
Image below (2021-08-28.053) was taken 27.6 days after discovery of 2021ukt
SN position is shown by white cross-hairs.
Measured magnitude +16.0
Image
Annotated CCD Image (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-08-28 01:26 UT (#909151-55)
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 SN2021wvw (T+3.5d)
Image
CCD Image  (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-08-28 02:46 UT (#909215-19)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGC 2605 with SN2021wvw - 2021-08-28 (T+3.5d)
Image below (2021-08-28.109) was taken 3.5 days after discovery of 2021wvw
Supernova shown by white cross-hairs
Measured magnitude +17.35
(linked with Detection Threshold = 3)
Image
CCD Image  (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-08-28 02:46 UT (#909215-19)
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 3240 - Spiral Galaxy with Type Ia Supernova 2021vau

UGC 3240 with SN2021vau (Orion)
SN 2021vau (Type: Ia, z=0.036) discovered 2021/08/04.610 UT by ASAS-SN
Alias: ASASSN-21ou, Gaia21dzq
Host Alias : PGC 16668 (catalog mag +15.5)
 (Rochester Supernova site | Discovery image | Gaia21dzq )
  
UGC 3240 with SN2021vau (T+23.5d)
Image
CCD Image  (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-08-28 03:07 UT (#909223-27)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGC 3240 with SN2021vau - 2021-08-28 (T+23.5d)
Image below (2021-08-28.124) was taken 23.5 days after discovery of 2021vau
Supernova shown by white indicator line
Measured magnitude +15.7 (SN + Host Nucleus)
Image
CCD Image  (150% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-08-28 03:07 UT (#909223-27)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021vau (UGC 3240) on Supernovae 2021 Page >>

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