NGC3184 - Spiral in Ursa Major

[daemon]

A very short session on this target - but it was nicely positioned on Wednesday. Only managed about an hour of Luminance and 20 mins each of RGB.

Had to throw away quite a few subs due to poor guiding. This is the best I could do with what was left.

Stacked in DSS. Processed in PixInsight.

Thanks for looking.

[wimvb]

Very nice. This galaxy is a lot weaker than it seems. Which gear did you use?

[teoria_del_big_bang]

Not great when a lot of the subs go in the bin, but I guess we've all been there.
Nonetheless, that is still a great image 🙂 

Steve

[daemon]

Thanks Wim!

Skywatcher 150PDS on EQ6R-Pro with ASI1600MM (L,R,G,B filters). 

I was lazy and did not calibrate the guiding, so I lost about 1 in 4 subs.

I'm in Bortle 5/4 so maybe I got away with a shorter session.

I've read that it is hard to control this galaxy with the bright stars "close by" but I was reasonably happy with the result for such a short session.

Cheers!

Steve

[daemon]

3 minutes ago, teoria_del_big_bang said:

Not great when a lot of the subs go in the bin, but I guess we've all been there.
Nonetheless, that is still a great image 🙂 

Steve

Thanks Steve! 

From another Steve! 🙂

Cheers!

[wimvb]

13 minutes ago, daemon said:

Thanks Wim!

Skywatcher 150PDS on EQ6R-Pro with ASI1600MM (L,R,G,B filters). 

I was lazy and did not calibrate the guiding, so I lost about 1 in 4 subs.

I'm in Bortle 5/4 so maybe I got away with a shorter session.

I've read that it is hard to control this galaxy with the bright stars "close by" but I was reasonably happy with the result for such a short session.

Cheers!

Steve

It's doable, but with your camera you have the risk of enhancing microlens diffractions. I think that they're just about visible around the brightest star in your image.

Btw, this galaxy benefits from Ha:

https://www.astrobin.com/full/th3p15/B/

[daemon]

4 minutes ago, wimvb said:

It's doable, but with your camera you have the risk of enhancing microlens diffractions. I think that they're just about visible around the brightest star in your image.

Btw, this galaxy benefits from Ha:

Yeah, I'm aware of the microlensing issue. It seems that it is a "cross we have to bear" with the ASI1600. 😞 Many of my images have even worse evidence of it! Oh well.

Maybe I'll try some Ha next time on this nice target. I just didn't have time on Wednesday. Had to work on Thursday. 🙂

I love your version on Astrobin though!! Excellent!!! 👍

[alacant]

21 hours ago, daemon said:

bright stars "close by"

Hi

Oh, don't remind us!

Among our recent targets were m109 and M5, both having bright stars to fight. You have done far better than I. Lovely shot.