M31 Andromeda

[PChis (Paul)]

Hi All,
My first attempt at M31.
Taken in the Murray-Sunset N.P., Victoria in September 2022 in a moonless sky.

Nikon D750
102 Refractor
HEQ5 Pro
no filters
18 x 360s subs (total 108 minutes)
ISO100

Processed with Siril using darks, flats & biases.

I have been using ISO100 almost exclusively for a few months now in an attempt to maximise dynamic range.
Would be pleased to hear any comments or suggestions on this low gain philosophy.

Regards,
Paul

[Wilsil (Wilco)]

Great image, well done

[AstroViking (Steve)]

What Wilco said, and congrats on capturing something that's very low in the sky (or not visible at all) for a large number of us.

As for the low ISO settings, if it's working for you, then stick with it.

Cheers,
V

[oska (John)]

Nice one Paul, very good shot.

[Dave882 (David)]

That’s a great shot well done!

[Anth10 (Anthony M)]

Paul,
Nice work. I can vouch for using low ISO particularly I’d you are lucky enough to have dark skies and low light pollution. I have a Cannon 60D and although settings may differ to your Nikon the theory should still apply. I have found ISO 400 is perfect and star colors are much better with more dynamic range as mentioned. The draw back is that you need longer exposures (which you are achieving). Else I increase to ISO 800 which I find is a good balance.

Keep up your good work.
Anthony

[carlstronomy (Carl)]

Really nice image Paul, you have some great detail there.

[PChis (Paul)]

Thanks to all for your comments.
Paul

[Millsy (Andrew)]

Great Image, especially from Victoria.

[Doogs38 (Alex)]

I love seeing great pics of Andromeda - well done Paul. Alex