Rho Ophiuchus with New Rings

[avandonk]

Finally a clear night. Collected 18x4 minutes in RGB of Rho Ophiucus.

I was not happy with the red data as it seemed out of focus so I collected it again after green and blue around the zenith. Of course high thin cloud then arrived just before acquiring a new target to stop all the fun.

Here is a large image x1.5 native pixel size 9MB

http://d1355990.i49.quadrahosting.com.au/2013_06/RHO_O_RGB.jpg


The colours are real as collected. I have put up the stacked unstretched data for others to process. It is registered RGB fits.

Here 38MB

http://d1355990.i49.quadrahosting.com.au/2013_06/RHO_O_FITS.zip



Bert

[Astroman]

WOW Bert, that looks terrific even if conditions were not playing nice. love that star field that scope produces...

[Larryp]

Beautiful, Bert-love all those pinpoint stars

[RobF]

Tough data as you say Bert. I went a bit nuts and come up with this :P

[LewisM]

Tough data indeed - trying not to black clip it, but proving awkward. BEAUTIFUL data though - reminds me how hard I had to work to get similar data myself.

[multiweb]

Cool set Bert. I was trying to download your ZIP file looking forward to some processing this rainy week-end but it says it's corrupted. :scared2: :sadeyes::sad:

[rmuhlack]

Here is my attempt. Thanks again for making your data available to learn from :)

[avandonk]

Marc I deleted it and uploaded again. Try again.


I think the data has colour gradients as my site does have light pollution.

Bert

[LewisM]

My attempt - after I taught myself for the first time how to merge R, G and B channels (being an OSC user, it was a learning curve!)

Maybe a tame attempt compared to others...

[rmuhlack]

Merging RGB is easy-peasy in Pixinsight - open each colour FIT file, then using the "Channel Combination" process tool select the relevant files from the drop down list and hit "Apply". Bingo! ;)

I'm guessing its pretty easy in StarTools as well. Dunno about Photoshop

[avandonk]

I am redoing flats. This could be part of the problem. I did have the optical train in bits.

Bert

[LewisM]

Another...

http://www.astrobin.com/full/44436/?mod=none

[LewisM]

It is easy in PS too - just had to learn how!

[LewisM]

Grrr... my "T-Rex" (the dark nebula at bottom right) keeps fading to complete black upon compression. In PS, there is distinct tonal variation.

Ah well.

Yes Bart, seems a good bit of gradient - I had to be aggressive with the green removal, and using gradient removal techniques.

[multiweb]

Cool - trying again now. :thumbsup:
PS: excellent - got it this time.

Here's my crack at it. Cropped. :help: Man... I had a hard time getting any color out of it. Bit of gradients in the pic. Big one here (http://www.astropic.net/astro/bert_crop.jpg). [3MB]

[LewisM]

I DID manage to get colour out of it (after a LONG LONG process), but then I was getting black clipping as seen bottom right.

Interesting variations with the same data.

[astronobob]

A Bit interesting to have a Hit, but my PS CS3 cant open these fits in a pink fit ? Is this because these pink fits are in 64bit ? ? ?

[avandonk]

I recollected RGB flats. There is still a problem with gradients.

Here is a large image 13MB

http://d1355990.i49.quadrahosting.com.au/2013_06/RhoO_RGB_.jpg




Here is the data as compressed tif 47MB


http://d1355990.i49.quadrahosting.com.au/2013_06/RHO_O_RGB.zip




Sorry about the wild goose chase.

Bert

[LewisM]

The link to the updated files won't work Bart.

[avandonk]

Fixed!


bert

[LewisM]

Best I can achieve with the re-flatted data...

[astronobob]

Hi Bert,

Well I got to work (PS CS3) with the 47MB compressed Tif in post 18, though be it a B/W Eta C. i think it B/W, I could Not find any colour in it, and I say this as Im not sure with these High-Tech Image Files ? says a Stock Dslr user : )
Note: Just a small cropping as working in close most time, I neglected some feathering border issues, approx 20-25 pixels worth was unprocessed : )
Photo Bucket Link aprox 350kb

http://s773.photobucket.com/user/astronobob/media/IIS%20Data%20from%20contibuters%20t o%20work%20on/CombinePBuk__zpsa59f3a41.jpg.html#/user/astronobob/media/IIS%20Data%20from%20contibuters%20t o%20work%20on/CombinePBuk__zpsa59f3a41.jpg.html?&_suid=13708439788700924145068907420 9

[LewisM]

Erm, Bert posted Rho Opiuchus, not Eta Carinae ;)

[astronobob]

Oh, Lol, my mistake I take it, Im not great on puutas and unzipping files, , must have mistaken the downloaded destination, as Bert has a few others in there, my pc, aswell, from times past ? Lol, thats so funny, i admit, so there you go :P

[LewisM]

Ah well, we are all going a little stir crazy in QLD... Cabin Fever :)

I see you HDR'd Eta Carinae? Lightly, which is good.

[tel.lekatsas]

Hi Bert,

I had a go with your data. Great stuff to work with. There were heavy gradients in the RGB .fits. These came away fairly cleanly with Dynamic Background Extraction tool (DBE) in PixInsight. There is some residual gradient in the top right corner that I couldn't get rid of.


http://prasinus.net/rho_o.jpg

[ourkind]

Beautiful Bert such a stunning part of the sky up close!

[avandonk]

That looks far better than what I could do. Well done.

It never ceases to amaze me how much knowledge and skills are held by amateurs here and elsewhere.

Bert