More dust

[Phil Hart]

Nice work Paul. Saturation and colour balance looks good to my eyes in the version you show now. Nice detail too particularly in the reflection neb bits.

Phil

[Tandum (Robin)]

I like this Paul, star colours are great.
Have you done G2V on your filters at all? I'm interested that you say 15min RG and 20min B, I shot a g2v star from the backyard last week and these baader filters gave me 1.02:1:1.36 on this 8300 sensor. A lot more blue is needed than I thought. I recombined a couple of images with those offsets and got a real improvement in the colour mix.

[Paul Haese]

Thanks Phil.

Robin, nothing as fancy as that. I have read a little up on this and went with around 1.2-1.4x on exposure time. Raising the blue up to 20 minutes seemed the logical choice and it does to see to help quite a lot with my images of late. Combining I just use 1:1:1. The extra exposure time does the job over the combine. The response of the astronomiks filters seems to be working with the sensor. So just empirical evidence being employed. I will look into this a little more though.

[multiweb (Marc)]

Very nice colors and great details in the neb. Well done indeed.

[marc4darkskies (Marcus)]

Beautiful Paul! I love refl nebs too so this will go on my todo list!

Cheers, Marcus

[Tom Davis (Tom)]

This is lovely, Paul!! I too would up the saturation a little bit, but I have been accused by many of over saturating my images. Congratulations on imaging reflection nebulae. They are fun and challanging!



-Tom

[Paul Haese]

Thanks guys; much appreciated.

Marcus this one is easy. I made sure to image the blue from 40 degrees up to avoid blue extinction.

Thanks Tom, your work is lots of inspiration to me.

[Ken Crawford (KenC)]

That is a rich field - wonderfully done. There is nothing wrong with doing deep on your subs and really overwhelm the read noise. Along with a good dither you get that really smooth data.

I love the fact that more people are going longer - deeper on a target vs how many objects can I shoot this month. Deep data is also so much easier to process and gives you more options.

Congrats on a fine image! I am sorry that I did not see you at AAIC!

Regards,

[iceman (Mike)]

Beautiful image, Paul. The reprocess is much better.

This image is now IOTW.

[Paul Haese]

Originally Posted by Ken Crawford

There is nothing wrong with doing deep on your subs and really overwhelm the read noise. Along with a good dither you get that really smooth data.



Congrats on a fine image! I am sorry that I did not see you at AAIC!

That is my thinking too Ken. Going deep has been working for me so far, so I will stick with it for now. Perhaps I ought to read up more on the physics, just for the sake of completeness.

I am sorry I could not make it either. Budget is quite tight and now it looks doubtful whether I am going to Exmouth too for Jupiter imaging this year.

Thanks Mike for the image of the week. Not expected but appreciated.

[marco (Marco Lorenzi)]

A little masterpiece as usual Paul, you have a special touch for image processing. Colors are perfectly balanced and the overall look is very natural!

Clear Skies
Marco

[Paul Haese]

Thanks Marco. I can only try. It sometimes takes many repro's to get the balance right and the help of others too.

[richardo (Rich)]

Nice job on this Paul..... congrats on the IIS image of the week!
Good to see you taking into account blue extinction factors at low altitudes.
I'm no too sure a great deal of people are aware of this factor.
Colour looks good and nice to see a larger version from the image I took of this recently showing the extent of those lovely golden stars and the dark neb that resides within.

I use my G2V calibrated ratios and add the multiplier factors to the RGB to arrive at the corrected weight for the altitude I image at.. I have an XL spread sheet I download off the net that gives me these factors for all altitudes.
Takes a lot of the guess work out of colour mixing.

Nicely done.

Rich

[Paul Haese]

Thanks Rich. I will take a look at this G2V stuff a bit more in depth. Do you have a link for the downloaded data?

[richardo (Rich)]

Originally Posted by Paul Haese

Thanks Rich. I will take a look at this G2V stuff a bit more in depth. Do you have a link for the downloaded data?

No worries Paul, sent you a private mail to the link of the xl spread sheet. Just uploaded it to my website for you.

Just find your setups ratio via a G2V star at the meridian and multiply the factors in RGB to what ever altitude you were shooting the object at.

Here's another version with different factors I just found. Might try these as they are a little different than the ones I've had for quite a few years. Also there's an explanation on the page.
http://starizona.com/acb/ccd/advtheorycolor.aspx

Cheers
Rich

[Paul Haese]

Thanks Rich, some reading to undertake. Thanks once again for doing this.

[richardo (Rich)]

Originally Posted by Paul Haese

Thanks Rich, some reading to undertake. Thanks once again for doing this.

Not a worry at all Paul.
Only pleased to help!
BTW, have decided to go with an OAG... hopefully will be here next week, fingers crossed....
Something else to keep my hair falling out

All the best
Rich

[Paul Haese]

I have now completed collection of the data on this image for those interested. I think it is smooth enough overall and still shows lots of detail.

[gregbradley]

Yes that is noticeably better Paul. It has more vibrance and the dust is more luminous and the distinction between the dust and the background is clearer.

What was the final number of hours you took?

Greg.

[Paul Haese]

Thanks Greg. I ended up with just a tad over 6 hours in the end. Reasonably short by my standards. I think I would need to go another 6 hours to get any substantial boost. Not bad for a 4" scope though.