Arachnophilia

Slawomir (Suavi) · #1 18-12-2014, 07:32 PM

Sharing my attempt at the Tarantula Nebula...

7hrs of 'sky data' collected on the 14th and 15th of December.

Any form criticism will be appreciated and valued :-)

Full resolution image: http://www.astrobin.com/141358/

Thanks for looking!

Slawomir

Placidus (Mike and Trish) · #2 18-12-2014, 07:59 PM

Superb! Some might complain that the very brightest bits are burned out, but I think that we all know what they look like, and it is more interesting to do what you have done: show the fainter bits and their relationship to the bright bits.

I'm assuming you've mapped it to achieve a "natural" look. Would you consider posting a version in Hubble palette?

Best,
Mike

RickS (Rick) · #3 18-12-2014, 08:15 PM

Very nice and crisp, Slawomir. I'd like to see more colour too.

Cheers,
Rick.

alpal · #4 18-12-2014, 08:48 PM

Hi Slawomir,
It seems everyone has Arachnophilia.

There are infinite versions of this nebula.

The picture has lots of detail - it's nice & sharp.
I think you'll be like me & want to re-process your data.

I would try to handle the brighter areas by layering in an earlier version of the first stretched version with a blurred layer mask.
A colour boost in LAB mode might give you more colour but
then you'll get colour noise so you'll need to do a layer mask to only
reduce noise in the darker areas.

cheers
Allan

Slawomir (Suavi) · #5 18-12-2014, 10:09 PM

Thank you gentlemen very much for your feedback.

I tried to better control the histogram and also adjusted colours a bit.

Full resolution version: http://www.astrobin.com/141358/B/

Thank you for helping me to get more out of my data :-)
Slawomir

alpal · #6 18-12-2014, 10:24 PM

That's looking much better.

Slawomir (Suavi) · #7 18-12-2014, 10:40 PM

Quote:

Originally Posted by Placidus

I'm assuming you've mapped it to achieve a "natural" look. Would you consider posting a version in Hubble palette?

Best,
Mike

The image is a result of LRGB combination from narrowband data. Unfortunately where I live light pollution is so intense that 12nm filters are inadequate, and having only one 3nm filter (Halpha) I use it as a luminance channel for the other two that are 12nm filters. This technique works okay for me, although I would love to be able to be able to create narrowband images, including Hubble palette, without blending.

May try to stimulate Hubble palette though :-)

Slawomir

PeterEde (Peter) · #8 18-12-2014, 10:40 PM

Stunning detail

Slawomir (Suavi) · #9 18-12-2014, 10:43 PM

Quote:

Originally Posted by alpal

That's looking much better.

Thank you Allan :-)

In fact, I am still learning techniques and rules for 'composing' astro-images correctly, so feedback helps heaps.

Slawomir (Suavi) · #10 18-12-2014, 10:44 PM

Quote:

Originally Posted by PeterEde

Stunning detail

Thank you Peter :-)

Slawomir (Suavi) · #11 19-12-2014, 01:08 PM

Quote:

Originally Posted by Placidus

...Would you consider posting a version in Hubble palette?

Best,
Mike

Hi Mike,

Unfortunately I was unsuccessful in creating a SHO image, mainly because signal from SII filter was very weak, so I added 80% Halpha to it.

The resulting image is not entirely in Hubble palette, but rather (S+80%H)HO.

http://www.astrobin.com/141358/C/

RB (Andrew) · #12 19-12-2014, 01:21 PM

Quote:

Originally Posted by Slawomir

I tried to better control the histogram and also adjusted colours a bit.

Slawomir

Wonderful detail Slawomir !

strongmanmike (Michael) · #13 19-12-2014, 01:42 PM

Quote:

Originally Posted by Slawomir

Thank you gentlemen very much for your feedback.

I tried to better control the histogram and also adjusted colours a bit.

Full resolution version: http://www.astrobin.com/141358/B/

Thank you for helping me to get more out of my data :-)
Slawomir

This version works well, great improvement over the original version too

Mike

gregbradley · #14 19-12-2014, 07:42 PM

That's a sensational image. I was interested in seeing some images from an ICX814 chipped camera. Very detailed and 3D like.

FLT110 had TEC lenses at one point. Do you know if your scope has a TEC made lens?

Greg.

Slawomir (Suavi) · #15 19-12-2014, 09:22 PM

Quote:

Originally Posted by gregbradley

That's a sensational image. I was interested in seeing some images from an ICX814 chipped camera. Very detailed and 3D like.

FLT110 had TEC lenses at one point. Do you know if your scope has a TEC made lens?

Greg.

Thank you Greg :-) I really like this camera and I am glad I chose it over QSI 660.

As for the lens, I think my telescope ( TS ED 102mm f/7 Refractor ) has about average quality lens, after all this scope costs about 800 euros...

Slawomir (Suavi) · #16 22-12-2014, 12:43 PM

I made an attempt to liven up the image a bit by slightly modifying the histogram and giving the colours a boost...

http://www.astrobin.com/141358/D/

alpal · #17 22-12-2014, 01:22 PM

Quote:

Originally Posted by Slawomir

I made an attempt to liven up the image a bit by slightly modifying the histogram and giving the colours a boost...

http://www.astrobin.com/141358/D/

Its' looking better & better.
If you'd used NASA Fits Liberator to stretch the FITS stacks with the function of x^(1/5) it would have done the hard stretching for you.

cheers
Allan

Slawomir (Suavi) · #18 22-12-2014, 02:43 PM

Quote:

Originally Posted by alpal

Its' looking better & better.
If you'd used NASA Fits Liberator to stretch the FITS stacks with the function of x^(1/5) it would have done the hard stretching for you.

cheers
Allan

Thank you for the hint Allan. Will certainly look it up.

RickS (Rick) · #19 22-12-2014, 03:33 PM

That's another nice improvement, Slawomir. Well done!

gregbradley · #20 22-12-2014, 08:04 PM

I really like this image Slawomir. Its like one of those drunken modern art pieces that somehow capture your interest with colour only!

I find it quite vibrant, 3Dish and a very pleasant and unusual colour scheme with tiny stars.

Greg.