NGC253 - What can you do with this data?

[whzzz28 (Nathan)]

Im interested to see what others can do with the data i got on NGC253.
This is ~5hours of data, taken on a mono CCD (LRGB) from my backyard so there is light pollution.

If you have some time i'd like for anyone who wants to to have a try at processing it. My results vary every time i process the image and i am not happy with any attempts i have had yet.

FITS files here: http://www.mediafire.com/?n3koyn18618ue1e

RGB is stacked into one file, if you would like individual RGB files let me know and i can upload them as well.

Otherwise, if anyone just wants to play with some data, feel free to give it a go.

[irwjager (Ivo)]

That's lovely data Nathan! Pity about the lightpollution, but you definitely have something good going.

Had a quick go with ST, but someone with more time may be able to do better...

Cheers,

[whzzz28 (Nathan)]

if you can get results like that then I think I need to go back to basics with pixinsight. I don't get that sort of colour or detail rendition on my attempts so I am obviously doing something wrong.

something to work on this weekend I think.

Thanks

[jjjnettie (Jeanette)]

I wish I had the band width to be able to download the data.
Ivo you did a great job on it.

[loki78 (Jon)]

Manipulating what you already know to be decent data is a great way for nubs like myself to learn processing also, to see if we come out with something that looks like others do. I think it's a fantastic way to hone your processing. You know what is possible out of it, rather than hammering away for hours on data you don't know is any good when you're starting out. A lot of ppl are quite protective about their data so massive kudos to you for making it available

[pvelez (Pete)]

Nathan

this looks like fun

I'll have a play when I get home this evening. I run PI on the home Mac.

Pete

[Poita (Peter)]

Originally Posted by jjjnettie

I wish I had the band width to be able to download the data.
Ivo you did a great job on it.

If you really want to have a go, I'll post it to you on a usb stick or a CD. I'd love to see what you do with it, I like the finesse of your processing on your images.

[irwjager (Ivo)]

Originally Posted by loki78

Manipulating what you already know to be decent data is a great way for nubs like myself to learn processing also, to see if we come out with something that looks like others do. I think it's a fantastic way to hone your processing. You know what is possible out of it, rather than hammering away for hours on data you don't know is any good when you're starting out. A lot of ppl are quite protective about their data so massive kudos to you for making it available

I second that Jon. I love having data to play around with that was recorded with different gear under different conditions. It always teaches you new things, no matter how advanced you are - the learning never stops!

If you're interested in some other data, have a look a Jim Misti's site where he has so kindly published his FITS files for anyone to download. The thing that I love about his data is that it is has 'real' flaws that anyone would encounter (some hot pixels, some dead pixels, average seeing, some gradients now and then, etc.) so it is perfect data learn the ropes with and build an all-round skill set with. Plus his data is genuinely exciting with heaps of detail and fuzzies to discover.

Then, of course, there is the Hubble Legacy Archive where you can try your hand at processing some of the Hubble's data - it's heaps of fun!

[whzzz28 (Nathan)]

Had another play tonight.
A little better, lacking some detail and seems soft (no noise reduction or anything performed), and color around the outer area seems dull, but then again blues in all of my images always come out looking more grey than blue, and this is with saturation up a fair bit.

[RickS (Rick)]

Probably worth having a go at deconvolution to get some more detail, Nathan. Unfortunately, it takes a bit of effort and practice to do well in PI.

[Tandum (Robin)]

I had a go in PS. Used the median noise filter method to remove gradients from both panes. Used selective sharpening on Lum.
1st image is straight off the rank, 2nd has colours moved about a little.
Not a lot of star colour but I think that's normal around 253.
Here's one I shot from 10 chain hill last year.

[pvelez (Pete)]

I've had a play this am. Its clear that I have a lot to learn about PI.

Here's my effort.

I take comfort from this exercise - my PI skills need work but I suspect my data's not as lousy as I had anticipated. I might submit some data to see how it fares with other hands.

Pete

[rolls05 (Roland)]

It must be me of course but I'm having a bit of trouble merging the rgb's .I'd love to have a go. I'll figure it out. Tho I think the thread will be dead by then

[rolls05 (Roland)]

By the by,I see there is a monthly comp. on another site where someone submits a raw tiff for download and you have a crack at it. documenting what you did. Seems a good idea.