M33 (Triangulum galaxy)

Started 4 months ago | Discussions thread
Michael S.
Michael S. Veteran Member • Posts: 8,971
Re: M33 (Triangulum galaxy)

Dan Paris wrote:


Here is an image of the Triangulum galaxy, taken from my Bortle 7 backyard in Paris suburbs last month with my 8" f/4 newtonian.

Overall there's 8 hours of luminance, 5 hours of H-alpha and 4 hours of color data.

I think this is my best image to date, thanks to the long acquisition time and good seeing conditions (2" FWHM for luminance and 1.7" for H-alpha), allowing to get a nice level of detail.

M33 with 8" f/4 newtonian, full resolution

Thanks for looking and clear skies,


Technical details:

8" f/4 custom Newtonian astrograph with Zen optics and carbon fiber tube
AP900 mount
TS 2.5" Riccardi-Wynne corrector
ZWO LRGB filters
Guiding : ZWO OAG + ASI120mm mini + AsiairV1

Luminance : 461 *60sec

H-alpha : 57*300sec

Chrominance : 75*60sec for each channel

Conditions : Bortle 7 skies in Paris' suburbs (20km from the Eiffel tower), rather good seeing.

Processing with Pixinsight

Bravo Dan!

Indeed an impressive result, as impressive as your FWHM numbers.

And very nice colurs - galaxy, background and the halpha knots.

best regards,

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Michael S.
EUROPE; dpreview since 2001
(check equipment via profile)

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