David's Astronomy Pages Stellar & Deep Sky
M33 Galaxy

Various images of M33

M33 Galaxy
Bullet M33 - Spiral Galaxy (Pinwheel Galaxy) - 3.0 mly
 
Bullet IC 142 - Extragalactic Star Cluster in M33
Bullet M33-B324 - Highly Luminous Star (HS80 B324) in M33
   
M33 Transients
Bullet M33 Novae
Bullet - M33-2006-1 - Extragalactic Nova (2006-09-28) in M33
Bullet - AT2021bl  - Extragalactic Nova  (2021-01-03) in M33
Bullet - AT2021wcf - Blue Transient / Nova ?  (2021-07-20) in M33
 

M33 - Spiral Galaxy (Pinwheel Galaxy)  in 2006

M33  (Triangulum)

Image

CCD Image Mosaic (50% size)
3 min exposure (average combine), 2x2 binning, C Filter
2006-11-16 22:24 h UT (#152233-45)
8" LX200 + ST-7E
 [ Larger Size, 75% ]
 
M33 - detail, showing named HII regions

Image

Annotated CCD Image Mosaic (75% size)
3 min exposure (average combine), 2x2 binning, C Filter
Rotated & Cropped
2006-11-16 22:24 h UT (#152233-45) 
8" LX200 + ST-7E
(Un-annotated Image, 75% size)

 

M33 - Variable 83 (S-Dor type variable)

Image

Annotated CCD Image 
5 x 3 min exposure (average combine), 2x2 binning, C Filter
2006-11-16 23:24 h UT (#152276-80) 
8" LX200 + ST-7E
( Image details as above )

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M33 - Spiral Galaxy ("Pinwheel Galaxy") in 2020

M33 (Triangulum)
Image
CCD Image (46% size, linear scale)
12 x 15s exposure (average combine), 2x2 binning, C Filter
2020-10-26 22:48 UT (#822003-18)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
M33 - Detail
Image
CCD Image (46% size, square root scale)
Image details as above
 
Image
Negative CCD Image (46% size, square root scale)
Image details as above
 
M33 - Earlier Image (2017)
Part of M33 galaxy, showing nebulae in spiral arms
Image 
CCD Image (75% size)
6 x 180s exposure (average combine), 3x3 binning, C Filter 
2017-12-13 23:23h UT (#607096-101)
12" LX200R  (at f/10.4) + ST-10XME
(Autoguided using TS 80mm APO + ZWO ASI178MC)
 

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M33 - Spiral Galaxy (Pinwheel Galaxy)

M33 (Triangulum)      
Image   Image:

Total Exposure:
Subs/Exposure
Details:
Date/Time:
Image Set:

Equipment:

Software:

Other Formats:
CMOS Colour Image (16% size)
Live Stacking of 182 frames
30 mins
182 x 10s, 1x1 binning
Gain 400, Raw16, ROI 3096x2080 (Full)  
2017-01-18 20:09h UT
(#20_09_08Z). Non-Guided.

TS 80mm f/6 APO  + ASI178MC (OSC)
Mounted on 12" LX200R
Frames acquired using SharpCap
Processed using AIP4WIN
Larger Image (33% size)
       
M33 - detail       
Image   Image:

CMOS Colour Image (23% size, cropped)
Image details as above
       
M33 - detail       
Image   Image:

CMOS Colour Image (23% size, cropped)
Image details as above
       

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IC 142 - Extragalactic Star Cluster in M33

IC 142 (Triangulum)
Star Cluster/Stellar association & HII ionized region in M33

Image

Annotated CCD Image (70% size, square root scale)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-10-05 21:09 UT (#1251012-15)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
 IC 142 - Detail
Next to IC 142 is a highly luminous star M33-B324

Image

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-10-05 21:09 UT (#1251012-15)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
 

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M33-B324 - Highly Luminous Star (HS80 B324) in M33

M33-B324 (Triangulum)
Highly Luminous Star (Yellow Supergiant) in M33
Alias:  HS80 B324 
(HS80 = Humphreys & Sandage, 1980
Astrophys. J., Suppl. Ser., 44, 319-381 (1980) )

Catalog V Mag 14.859  (B-V 0.428)
Absolute Magnitude -10.2
Located next to IC 142

Image

Annotated CCD Image (150% size, square root scale, cropped)
4 x 180s exposure (average combine), 3x3 binning, Clear Filter
2024-10-05 21:09 UT (#1251012-15)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
 

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M33 Transients (Novae etc)


M33-2006-1 - Extragalactic Nova (discovered 2006-09-28) in M33

 M33-2006-1 in M33 (Triangulum)
An extragalactic nova was discovered in M33 on 2006/09/28.20 
by University of Texas & Koichi Itagaki (CBET 655)
having a magnitude of +16.5 
(Extragalactic Novae page at Rochester Supernova site | Discovery Image 1 | Discovery Image 2)
 
 M33-2006-1 in M33 - 2006-10-05 (T+7d)
Image below (2006-10-05.013) was taken 7 days after discovery.
No sign of nova is seen in image (mag limit c. +16.6)
(reported location of nova indicated by white circle)
Image
CCD Image
2 x 3 min exposure (average combine), 2x2 binning, C Filter
2006-10-05 00:18h UT (#145178-79)
8" LX200 Classic + ST-7E
 
 M33-2006-1 in M33 - 2006-10-09 (T+11d)
Image below (2006-10-09.) was taken 11 days after discovery.
Possible faint sign of an object is seen at the recorded position of 
the recorded nova indicated by white marker 
(image mag limit c. +17.4)
Image
CCD Image
5 x 3 min exposure (average combine), 2x2 binning, C Filter
2006-10-09 20:34h UT (#146107-11)
8" LX200 Classic + ST-7E
 

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AT2021bl - Extragalactic Nova (discovered 2021-01-03) in M33

 AT2021bl in M33 (Triangulum)
AT2021bl (Type: unk) discovered 2021/01/03.688 UT by XOSS
Alias: XM48MZ
EGN shown by white cross hairs
Image
Annotated CCD Image  (50% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-01-03 23:20 UT (#844079-83)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
AT2021bl - Image sequence
 from T+0.3d to T+3.1d
 
AT2021bl in M33 - Earlier Image, 2021-01-03 (T+0.3d)
Image below (2021-01-03.972) was taken 0.28 days after discovery of AT2021bl
EGN is shown by white cross hairs.  Magnitude ?   (vs +17.9 at discovery)
Image
Annotated CCD Image  (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-01-03 23:20 UT (#844079-83)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
AT2021bl in M33 - 2021-01-03 (T+3.1d)
Image below (2021-01-06.770) was taken 3.1 days after discovery of AT2021bl
EGN is shown by white cross hairs.  Magnitude: faded   (vs +17.9 at discovery)
Image
Annotated CCD Image (100% size, square root scale, cropped)
5 x 180s exposure (average combine), 3x3 binning, C Filter
2021-01-06 18:29 UT (#846021-25)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 

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MAT2021wcf - Blue Transient / Nova ?  (discovered 2021-07-20) in M33

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
 (Rochester Supernova site | Rochester EGN Page |  Nick James image |

AT2021wcf is a blue transient / possibly a nova
[ Gaia21duh ]
 
M33 with AT2021wcf  (T+42.3d)
Region with the reported transient is shown by the white rectangle
Image 
Annotated CCD Image  (70% size, square root scale)
4 x 180s exposure (average combine), 3x3 binning, C Filter
2021-09-01 00:10 UT (#910065-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
M33 with AT2021wcf  - 2021-09-01 (T+42.3d)
Image below (2021-09-01.001) was taken 42.3 days after discovery of 2021wcf
FOV is showed by the white rectangle in wider view image above
The reported transient (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
2021-09-01 00:10 UT (#910065-68)
12" LX200R (at f/10.4) + ST-10XME
Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
 
M33 with AT2021wcf  - 2021-09-28 (T+69.4d)
Image below (2021-09-28.091) was taken 69.4 days after discovery of 2021wcf
Position of earlier reported nova is shown by white cross-hairs
After 69 days the transient has almost certainly faded into
galaxy background and is no longer visible
Image 
Annotated CCD Image  (200% size, square root scale, cropped
Image details above
 
 

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