M33 - Without Control Frames

[Stub Mandrel]

I've just proven that my 'control frames' are the source of my walking noise! My cooled DSLR is so low noise that I found it is free form the streaks that appear when I use flats, darks and bias.

Clearly I need to produce temperature controlled flats at the very least.

The difference is striking.

 

[Stub Mandrel]

Here's a blended version to draw out the arms <improved to keep the sparkle>.

 

[barkis]

What you did worked then. 
I believe M33 is a difficult  target, but I don't know that from 
personal experience.  The Arms are readily seen, and it looks a fine result  to me.

 

 

[John]

I've moved this thread from the deep sky observing section to the deep sky imaging section. I've left a link to it at the original posting location (deep sky observing).

[whatablanker]

Cooled DSLR? I'm intrigued 

[Stub Mandrel]

Canon 450d astronomers modded and a cold finger a copper plate behind the sensor connected to s peltier cooler.

 

[wimvb]

Great image of this galaxy.

I like image 2 in your first post best. A little creativity with curves should make this even better, I think. Image 1 looks clipped on my mobile phone. That may be my screen, though.

[Stub Mandrel]

45 minutes ago, wimvb said:

Great image of this galaxy.

I like image 2 in your first post best. A little creativity with curves should make this even better, I think. Image 1 looks clipped on my mobile phone. That may be my screen, though.

I agree the core of number 1 looks burnt out, but image 2 looks a bit lifeless, that's why I went for the blend in no. 3. I have a an hour or three (or more) of old data at different exposure lengths, I may add it in as well and revisit the whole shebang down the road.

[wimvb]

50 minutes ago, Stub Mandrel said:

I agree the core of number 1 looks burnt out, but image 2 looks a bit lifeless, 

I think it's just a matter of processing. Nr 2 has good quality data, as far as I can see.

[Stub Mandrel]

1 hour ago, wimvb said:

I think it's just a matter of processing. Nr 2 has good quality data, as far as I can see.

Number 2 has horizontal coloured streaks, from where the subs have drifted compared to the control frames.