M33 in Triangulum Chroma LRGBHa Borg 125 f/8 + ASI 2600 (Scott Denning)

Celestial hemisphere: Northern · Constellation: Triangulum (Tri) · Contains: M 33 · NGC 595 · NGC 598 · NGC 604 · Triangulum Galaxy · Triangulum Pinwheel

M33 in Triangulum Chroma LRGBHa Borg 125 f/8 + ASI 2600, Scott Denning

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M33 in Triangulum Chroma LRGBHa Borg 125 f/8 + ASI 2600

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M33 in Triangulum Chroma LRGBHa Borg 125 f/8 + ASI 2600

M33 Oct 24 and 27 2022Borg 125 f/8 (1050 mm) on 10Micron Chroma LRGBHa ASI2600mm

L=333x30s; R=G=B=83x60s; Ha=22x300s
NBRGBCombination for RGBHa then 90% NXT while linear
Extract NBRGB_L and make superL for deconvolution
LRGB combine linear
Stretch with GHS
Curves, LHE, final tweaks in PixelMator Pro

A fall favorite -- the Pinwheel Galaxy in a tiny constellation called The Triangle. This guy climbs up over my Linden tree around 10:30 and sets behind the garage about 4:30 am.

One of our Local Group, it's "only" 2.5 million light years away (think about Lucy the Australopithecine from Olduvai).

Young blue stars in the spiral arms fry gas into pink plasma but the core is old and buttery-golden-yellow. Lots of pretty brown dust lanes in there too. That biggest red nebula (NGC 604) in the spiral arm is gi-freaking-normous: more than 1000 light years wide!

I've done this one before, several times. But now I have better filters so I don't get those nasty purple halos around the bright stars anymore. 9 hours at a focal length of just over a meter (f/8) using a 5" refractor.

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M33 in Triangulum Chroma LRGBHa Borg 125 f/8 + ASI 2600

M33 in Triangulum Chroma LRGBHa Borg 125 f/8 + ASI 2600

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M33 in Triangulum Chroma LRGBHa Borg 125 f/8 + ASI 2600

M33 in Triangulum Chroma LRGBHa Borg 125 f/8 + ASI 2600

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