David's Astronomy Pages Stellar & Deep Sky M33 Galaxy

M31 Galaxy

Local Group Galaxies

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M101 Galaxy

Various images of M33

M33 Galaxy
	M33 - Spiral Galaxy (Pinwheel Galaxy) - 3.0 mly
M33 Transients
	M33 Novae
	- M33-2006-1 - Extragalactic Nova (2006-09-28) in M33
	- AT2021bl  - Extragalactic Nova  (2021-01-03) in M33
	- AT2021wcf - Blue Transient / Nova ?  (2021-07-20) in M33

M33 - Spiral Galaxy (Pinwheel Galaxy)  in 2006

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

M33 (Triangulum)

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

CCD Image (46% size, square root scale) Image details as above

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

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

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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)

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)

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

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)

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)

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

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

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

Annotated CCD Image  (200% size, square root scale, cropped Image details above

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