Respecting the...

[LewisM]

...noise

If David Malin's catch-phrase is Repect the Light, mine has to be Respect the Noise "Cause that's all I ever have.

Wonderous 1hr30 on NGC7793, same data as before, this time NOT denoised or fiddled with. Taken at f/5 in a zone of light pollution outside the limits of the Bortle scale (maybe a 12/9). The poor LP filter struggles...

CCDStack didn't do as good an alignment as I wanted - ah well, it was just something to do. Might try it in PI next time.

Glorious ain't it :ROFL:

[strongmanmike (Michael)]

Stop with all the noise will ya, I'm going deaf

It's actually pretty good mate with some nice details coming out there

Mike

[Placidus (Mike and Trish)]

Immediately recognizable as the Sculptor semi-dwarf.

Good work!

[LewisM]

Originally Posted by strongmanmike

Stop with all the noise will ya, I'm going deaf

It's actually pretty good mate with some nice details coming out there

Mike

Sorry, what did ya say Mike?

I have a new problem that requires rectification - neighbour, who's "security" floodlight used to automatically switch off at 2210, now switches off at 2330. She refuses to turn it off (she lives in fear it seems), so I unfortunately have had to make a formal complaint of "light pollution and sleep deprivation" to the local council, since it not only fully illuminates our back yard, but also the first and second story bedrooms. And I refuse to simply use blackout curtains, especially in summer! It simply should not be on past 8pm.

Anyway, the trials and tribulations of the city astronomer...

[Placidus (Mike and Trish)]

Originally Posted by LewisM

... Neighbour ... floodlight ... "light pollution and sleep deprivation" ...

Aaaugh! You have our sympathy.

M & T

[LewisM]

OK, I just fired up PI for the first time in maybe a year - still running Ripley 18

WHAT A DIFFERENCE! I haven't done debayer - I just wanted to see how well it registered and integrated... OK, I might be converted finally!

Same stack, now run through PI with Lanzcos-3 interpolation.

Tighter, less noise, more detail - look at the background GX's appearing!

Rick, I am coming to your next seminar!!!

[Slawomir (Suavi)]

Resistance is futile...

Welcome to PI cult Lewis!

[Paul Haese]

Looks like a faint sucker. Just checked it out in the SkyX. Its a good candidate. I take it you are going to persist with it?

[LewisM]

For as long as I can Paul - and hopefully focused next time!

[gregbradley]

Looks great. I am learning PI at the moment and the main thing I think is understanding the different ways of handling windows, applying processes, creating a preview etc.

Greg.

[LewisM]

Figured out an effective workflow now for the OSC CCD.

Only thing I do NOT like as compared to CCDStack is I am seeing microlensing artifacts for the first time - CCDStack doesn't do that, but then again, the star sizes in CCDStack are bloated compared to PI.

I guess it is an acceptable tradeoff - the GX is SO much more detailed.

I also wish PI didn't need 4 seperate folders to keep the output sensible, but I can live with having to be more prepared Laziness no more.

[LewisM]

Made the error of using Superpixel debayer this time, and will do VNG or bilinear next time, so the image is binned.

I think it is a true representation of what 1.5 hours in severe LP using an LP filter with an OSC looks like. Sure, more time will give a MUCH better result, but this was just a trial to get my head around PI once and for all.

This is NO darks, bias or flats - got to figure that part out properly, as well as a defect map. I could not figure out how to save the scaled image in PI, so took the saved fit to CCDStack and scale saved it as a 16 bit tiff then into PS for some final tweaking - not confident with some of the PI stuff yet, especially pixel math.

Shows more promise. Amazing what we can find experimenting rather than it being handed to us on a plate

[Atmos (Colin)]

In some respects I've got it a bit easier, having only seriously began joining the astrophotographery thing like two months ago, I have started played with PI with no knowledge of PS so I more of a blank slate