David's Astronomy Pages
CCD Images - Session 859 (2021-02-16)

Objects Session Notes
Bullet AT 2021bfs - Transient Fe-II Star in M31
Bullet UGC 2505 - Irregular Galaxy with Type II Supernova 2021bge
Bullet AT 2021dbp - Type CV Transient
Bullet UGC 3502 - Spiral Galaxy with Type Ia Supernova 2021cwc
Bullet AT2021ckv - Type YSO Transient  (GCVS PR Ori)
Bullet AT2021clj - Candidate Nova in M31 (Nova M31 2021-02b?)
Bullet SN 2021xn - Type Ia Supernova in PGC 6041
Bullet UGCA 174 - Spiral Galaxy (PGC 27828)
Bullet C/2019 L3 (ATLAS) - Comet
Bullet UGC 5245 - Spiral Galaxy (PGC 28136)
Bullet UGCA 200 - Irregular Galaxy (PGC 29299)
Bullet UGC 5164 - Spiral Galaxy (PGC 27630)
Bullet AT 2021rl - BL Type Transient (QSO 0954+658)
Bullet CGCG 264-017 - Galaxy (PGC 24798) with Type Ia SN 2021bjy
Bullet NGC 3266 - Spiral Galaxy
   
Bullet Variable Stars (photometric monitoring)
- RZ LMi, FO Ori, NV Ori

   
Bullet Nearby Stars (astrometric monitoring)
- DX Cnc, CN Leo, Scholz's Star, Teegardens Star
  
   
- All Night session (7.7 hours)
- Main aims of the session were to acquire a selection of variable star, nearby star and comet targets and deep sky targets as cloud/showers allowed.
- 12" LX200 + ST-10XME for imaging
- TS 80mm APO + ZWO ASI178MC for guiding & imaging
- Ambient Temperature: 5°C (min)
- CCD Temperature:  -15°/-20°C
- Notes from 2021-02-16 >>
   [ Local Files >> ]  
-  
   

AT 2021bfs - Transient Fe-II Star in M31

AT 2021bfs in M31 (Andromeda)
AT 2021bfs (Type: FeII) discovered 2021/01/26.720 UT by Italian Supernovae Search Project
Alias: PNV-OMB15, PNV J00425220+4116246
 
AT 2021bfs in M31 - 2021-02-16 (T+21.1d)
Image below (2021-02-16.803) was taken 21.1 days after discovery of 2021bfs
Transient is confirmed to have faded. Previous position is shown by white circle
Image
Annotated CCD Image  (100% size, log scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-16 19:25 UT (#859004-08)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2021bfs on M31 Page >>

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UGC 2505 - Irregular Galaxy with Type II Supernova 2021bge

UGC 2505 with SN 2021bge (Cetus)
SN 2021bge (Type: II) discovered 2021/01/27.517 UT by Koichi Itagaki
Alias: ATLAS21dfn, Gaia21aqd
 ( Rochester Supernova site | Discovery Image  )
 
UGC 2505 with SN 2021bge - 2021-02-16 (T+20.3d)
Image below (2021-02-16.818) was taken 20.3 days after discovery of 2021bge
SN is shown by white cross hairs.  Measured Magnitude +16.5
Image
Annotated CCD Image  (125% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-16 19:47 UT (#859013-17)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021bge (UGC 2505) on Supernovae 2021 Page >>

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AT 2021dbp - Type CV Transient

AT 2021dbp (Auriga)
AT 2021dbp (Type: CV) discovered 2021/02/14.535 UT by Gaia
Alias: Gaia21auv,  GSC 2374:280
 ( Rochester Supernova site |  Gaia21auv )
Based on Gaia Alert at magnitude +10.04
 
AT 2021dbp - 2021-02-16 (T+2.3d)
CV is shown by white cross hairs. 
Image
Annotated CCD Image  (50% size, linear scale)
2 x 60s exposure (average combine), 3x3 binning, C Filter
2021-02-16 20:34 UT (#859046-48)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
AT 2021dbp - 2021-02-16 (T+2.3d)
Image below (2021-02-16.854) was taken 2.3 days after discovery of 2021dbp
CV is shown by white cross hairs.  Measured Magnitude +10.5 vs GSC magnitude  +10.2
Image
Annotated CCD Image  (100% size, linear scale, cropped)
2 x 60s exposure (average combine), 3x3 binning, C Filter
2021-02-16 20:34 UT (#859046-48)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2021dbp on Transients 2021 Page >>

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UGC 3502 - Spiral Galaxy with Type Ia Supernova 2021cwc

UGC 3502 with SN 2021cwc (Camelopardalis)
SN 2021cwc (Type Ia, z=0.021) discovered 2021/02/13.381 UT by ATLAS
Alias: ATLAS21flz
 ( Rochester Supernova site |  Giancarlo Cortini image | Odd Trondal image )
 
UGC 3502 with SN 2021cwc - 2021-02-16 (T+3.5d)
Image below (2021-02-16.870) was taken 3.5 days after discovery of 2021cwc
SN 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
2021-02-16 21:02 UT (#859064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGC 3502 - Wider View
Image
Annotated CCD Image  (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-16 21:02 UT (#859064-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021cwc (UGC 3502) on Supernovae 2021 Page >>

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AT 2021ckv - Type YSO Transient  (GCVS PR Ori)

AT 2021ckv / PR Ori  (Orion)
AT 2021ckv (Type: YSO) discovered 2021/02/08.759 UT by Gaia
Alias: Gaia21arx, GCVS PR Ori
 
AT 2021ckv / PR Ori - 2021-02-10 (T+2.2d)
Image below (2021-02-10.965) was taken 2.2 days after discovery of 2021ckv
Position of reported YSO Type Transient is shown by white cross-hairs.
Measured Magnitude +11.1 (vs normal range of +12.2 to +13.6)
Image
Annotated CCD Image  (50% size, linear scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-16 21:54 UT (#859093-97)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 

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AT 2021clj - Candidate Nova in M31 (Nova M31 2021-02b?)

AT 2021clj in M31 (Andromeda)
AT 2021clj (Type: unk) discovered 2021/02/09.549 UT by XOSS
Alias: XN02JR, Nova M31 2021-02b?, PNV J00424827+4119374
 
M31 with AT 2021clj - 2021-02-16 (T+7.4d)
Image below (2021-02-16.922) was taken 7.4 days after discovery of 2021clj
Transient's reported position is shown by white circle.
Transient is faint and difficult to identify. Transient in Unconfirmed
Image
Annotated CCD Image  (100% size, linear scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-16 22:17 UT (#859101-05)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
M31 with AT 2021clj - Earlier Image, 2021-02-10 (T+1.4d)
Image below (2021-02-10.927) was taken 1.4 days after discovery of 2021clj
Transient's reported position is shown by white circle.
Transient in Unconfirmed
Image
Annotated CCD Image  (100% size, linear scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-10 22:24 UT (#858080-84)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
 

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SN 2021xn - Type Ia Supernova in PGC 6041

SN 2021xn (Perseus)
Faint Galaxy (PGC 6041, SDSS J013751.16+533958.8, catalog mag +16.1)
with Type Ia Supernova
[ Supernovae ]

SN 2021xn (Type: Ia) discovered 2021/01/10.158 UT by ZTF
Alias: ZTF21aacvhsc
 (Rochester Supernova site | Claudio Balcon image  )
 
PGC 6041 with SN 2021xn - 2021-02-16 (T+37.8d)
Image below (2021-02-16.937) was taken 37.8 days after discovery of 2021xn
SN is shown by white cross hairs.  Measured Magnitude +15.8
(magnitude based on WCS link on cropped image using GSC stars)
(too many stars for full frame WCS Link using UCAC stars)
Image
Annotated CCD Image  (150% size, log scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-16 22:38 UT (#859109-13)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021xn (PGC 6041) on Supernovae 2021 Page >>

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UGCA 174 - Spiral Galaxy (PGC 27828)

UGCA 174 (Sextans)
Alias: PGC 27828 (catalog mag +14.9)
  [ UGCA Galaxies ]

Other galaxies in field of view are
PGC 27817 (catalog mag ?), PGC 27825 (catalog mag +14.5)
PGC 1046825 (catalog mag +17.3), PGC 1046387 (catalog mag +17.7),
Image
Annotated CCD Image  (50% size, square root scale)
3 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-16 23:21 UT (#859120-22)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
UGCA 174 - Detail
Image
 CCD Image  (125% size, square root scale, cropped)
Image details as above

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C/2019 L3 (ATLAS) - Comet

C/2019 L3 (ATLAS)
(passing through Cassiopeia)
Sun Distance 4.59 AU (approaching)
Earth Distance 4.73 AU (707.7 million km)
   C/2019 L3 (ATLAS)  - 2021-02-16, Detail
Autoguided on offset star using PHD2 with Lock Shift
set at the comet's rate of motion
(Ra 56.28 arcsec/hr, Dec -8.82 arcsec/hr)
Image   Image
Annotated CCD Image (50% size, square root scale)
3 x 45s exposure (average combine), 3x3 binning, C Filter
2021-02-16 23:32 UT (#859125-27)
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 45s exposure (average combine), 3x3 binning, C Filter
2021-02-16 23:34 UT (#859125-30)
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 2020 Page >>    

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UGC 5245 - Spiral Galaxy (PGC 28136)

UGC 5245 (Sextans)
Alias: PGC 28136
 [ Flat Galaxies
Image quality rather poor, target to be rescheduled for a later session
Image
CCD Image  (100% size, square root scale, cropped)
2 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-16 23:47 UT (#859134-35)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Later Image of UGC 5245 (2022-01-08, S951) >>

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UGCA 200 - Irregular Galaxy (PGC 29299)

UGCA 200 (Sextans)
Alias: PGC 29299 (catalog mag ?)
[ UGCA Galaxies, Irregular Galaxies ]

Position of galaxy is shown by white circle.
Image is crossed by a series of planes or satellites
Image
Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-17 00:23 UT (#859161-65)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
UGCA 200 -  Detail
Galaxy is just visible above the background noise
Image
Negative CCD Image (100% size, square root scale, cropped)
Image details as above
 
UGCA 200 -  Earlier Image (Jan 2021)
Galaxy (position indicated by white circle)
is barely visible above the background noise.
Target to be rescheduled for a later session
Image
Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-01-13 01:08 UT (#849085-89)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 

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UGC 5164 - Spiral Galaxy (PGC 27630)

UGC 5164 (Leo)
Alias: PGC 27630
 [ Flat Galaxies

Image suffers from glare from unknown source (not moon). Target to be rescheduled for a later session
Image
CCD Image (100% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-17 00:44 UT (#859168-72)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
 

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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 - 2021-02-17 (T+41.6d)
Image below (2021-02-17.065) was taken 41.6 days after discovery of 2021rl
BL Type object shown by white cross hairs.
Measured magnitude +14.2  (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
2021-02-17 01:43 UT (#859200-04)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of AT 2021rl  (QSO 0954+658) on Transients 2021 Page >>

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CGCG 264-017 - Galaxy (PGC 24798) with Type Ia Supernova 2021bjy

 CGCG 264-017 with SN 2021bjy (Ursa Major)
SN 2021bjy (Type Ia, zhost=0.02749) discovered 2021/01/30.481 UT by ATLAS
Alias: ATLAS21dgz
 ( Rochester Supernova site | Odd Trondal image )

[ Supernovae 2021 ]
 
CGCG 264-017 with SN 2021bjy - 2021-02-17 (T+17.6d)
Image below (2021-02-17.080) was taken 17.6 days after discovery of 2021bjy
SN is indicated by white cross-hairs. Measured magnitude +16.7 (transient)
(Note. Image linked on x1.5 sized image)
Image
Annotated CCD Image  (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-17 02:02 UT (#859208-11)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
Images of SN 2021bjy (CGCG 264-017) on Supernovae 2021 Page >>
 

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NGC 3266 - Spiral Galaxy

NGC 3266 (Ursa Major)
Deep Sky Challenge, May 2020, Member of LGG 197
 [ Deep Sky Challanges (Ast.Now) ]
Image
Annotated CCD Image (50% size, square root scale)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-02-17 02:27 UT (#859216-20)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
NGC 3266 -  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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