NGC 6445 and 6440

[rat156]

Hi All,

This is a nice FOV and the planetary is quite a hard object as it has some bright parts and some extended Ha regions which really take some teasing out.

I found the colour balance to be hard to get right, I couldn't get enough red into the PN without the star colours going haywire.

Anyway, here 'tis.

L, Ha, R, G, B image (120, 120, 24, 24, 24 minutes). L & Ha blended 50:50 in CCDStack.

Usual telescopic gear (listed below).

Cheers
Stuart

[TrevorW]

Well done fitting them both in

yeah colours not quite right but that'll sort itself out on the repro

cheers

[Paul Haese]

Nice image Stuart. Maybe just a little clipped and there is a line running from top to bottom on the left hand side about 15mm or so in from the edge. Very nice field of view.

[JD2439975 (Justin)]

Never seen this PN before, very interesting...yet another added to the list.

Nicely captured Stuart, I imagine the faint "waving hand" in the upper-right of the nebula was the biggest tease.

[Hagar (Doug)]

Nice one Staurt, Looks like a difficult target for sure.

[h0ughy (David)]

great image - havent seen this one before (that i remember)

[tornado33]

Great framing there, and great detail in the PN.
Scott

[multiweb (Marc)]

Nice one. Very nice details and colors in the planetary.

[richardo (Rich)]

Nice job Stuart!
Did you use the SCT or the RC??? Either ither with the ST10 are perfect to do these little suckers justice.. I think your colours look fine, but as Paul mentioned, your back ground is clipped.
I think you'll find if you sorted this, the extensions on the PN will become more obvious and the image as a whole might be easier to process.

What's with the line to the L/H side??

Other than these things, good effort and thanks for sharing this obscure morsel.

Rich

[sjastro]

Interesting field Stuart.

Steven

[rat156]

Originally Posted by richardo

Nice job Stuart!
Did you use the SCT or the RC??? Either ither with the ST10 are perfect to do these little suckers justice.. I think your colours look fine, but as Paul mentioned, your back ground is clipped.
I think you'll find if you sorted this, the extensions on the PN will become more obvious and the image as a whole might be easier to process.

What's with the line to the L/H side??

Other than these things, good effort and thanks for sharing this obscure morsel.

Rich

Background is clipped because I did the colour under a full moon, they had horrid gradients. If you take out the Luminance channel it's not clipped, but the histogram defaults to the RGB, which I don't really care about, the bits between the stars are black, so I just make them black.

Attached is a histogram of the underlying luminanace image.

The 8 bit jpeg can also turn out clipped as the dynamic range is compressed. I can't do much about that though.

The line on the LHS is from a bit of a mismatch between the two luminance layers, I should just crop it out?

Not sure about the extensions, 15 minute Ha exposures should have brought them out, they are very faint though.

Cheers
Stuart