M33 Triangulum Galaxy (Reg Pratt)

Celestial hemisphere: Northern · Constellation: Triangulum (Tri) · Contains: HD9483 · IC 131 · IC 132 · IC 133 · IC 135 · IC 136 · IC 137 · IC 142 · IC 143 · M 33 · NGC 588 · NGC 592 · NGC 595 · NGC 598 · NGC 604 · Triangulum Galaxy · Triangulum Pinwheel

M33 Triangulum Galaxy

Link: https://www.r3gdigital.com/galaxy-gallery/m-33-sho

M33 Triangulum Galaxy

Link: https://www.r3gdigital.com/galaxy-gallery/m-33-sho

At first glance you may not even realize this is a galaxy and I wouldn't blame you. After all, all you can see are nebulae and stars.My goal here was to highlight the nebulae only. You've seen M33 images in narrowband before but what you'll notice in that in addition to the narrowband signal you also see a bunch of light from the galaxy in between nebulae. This galaxy shine is caused by the broadband signal that is present alongside the narrowband signal. It's easy to forget that narrowband filters also capture a small amount of broadband signal as well. So in order better isolate the ionized gasses we must subtract the broadband signal out which leaves pure narrowband signal. Without the usually galaxy shine the whole structure takes on a whole new vibe.

Equipment:
TS-Optics ONTC 10"
ZWO ASI2600mm / Chroma 3nm HA
iOptron CEM70 Mount

ES ED127
QHY268m / Antlia 3.5nm OIII & SII

Mag 18 (Bortle 7)

HA: 13.05
OIII: 6.50
SII: 6.55
RGB: 5 min per channel
Total Integration: 27.50 hrs

Final
Original
B

B

Title: Starless

Uploaded: ...

Multiscope Setup
Narrowband imaging
ZWO ASI2600MM Pro
Unique or Unusal Deep Sky Targets
The refractors!
SF Bay Area Imagers

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	Image of the day	Top pick	Top pick nominations	Total submitted
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Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	6456528
PixInsight job	4LHP7YEZRUGKYY3KN3C1A9SZCAJY76DG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	01h33m49s.48
RA (top/left)	01h35m43s.24
RA (top/right)	01h31m52s.62
RA (bottom/right)	01h31m56s.51
RA (bottom/left)	01h35m45s.18

Dec (center)	+30°41′09″.8
Dec (top/left)	+31°06′19″.2
Dec (top/right)	+31°05′42″.6
Dec (bottom/right)	+30°15′52″.8
Dec (bottom/left)	+30°16′30″.5

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M33 Triangulum Galaxy

M33 Triangulum Galaxy

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M33 Triangulum Galaxy

M33 Triangulum Galaxy

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