Venus Jan 20 - UV + IR (false colour)

[matt]

Took advantage of a clear western sky just after sunset to record this false colour image of Venus.

This is a composite of R (IR) + G (UV+IR) + B (UV).

The usual set-up: C9.25, DMK21AF04, 2.5x Powermate.

Thanks for looking.

[astro_south (Andrew)]

Great work Matt ... interesting detail in the false colour image

[iceman (Mike)]

Lovely image Matt, good colours and nice and sharp.

[rogerg (Roger)]

Wow, that's darn good for Venus!!

Excellent image. Very sharp and variation in cloud colour too. Very good result, you must be happy with that!

[cookie8 (Vincent)]

Lovely image Matt. A silly question: what is false color image? I have a webcam with IR/UV filter.Do I get similar color if I remove it then image?

[matt]

Originally Posted by cookie8

Lovely image Matt. A silly question: what is false color image? I have a webcam with IR/UV filter.Do I get similar color if I remove it then image?

Hi.

In a nutshell, no.

False colour imaging is when you use separate UV and IR filters to replace the traditional Blue and Red channels when making an RGB image.

An IR/UV cut filter does a different thing altogether, in that it blocks transmission of light at those wavelengths to stop 'bleeding' into your channels.

At the moment, I'm creating a synthetic Green channel from combining both IR and UV.

I then take all three (IR-synthetic Green-Red) into Photoshop where I combine them to make one image.

It involved a little tweaking to get the right 'look'...but that's about it.

Hope that helps.

[jjjnettie (Jeanette)]

Very nice Matt!

[Kevnool (Kev)]

Fantastic Image of Venus ....and Yep its up there with the best....Cheers Kev.

[Quark (Trevor)]

Well done Matt, looks great, like the colour and the detail.
Top stuff.

Regards
Trevor

[renormalised (Carl)]

Nice shot, Matt...the polar hoods and the high cloud are quite easily seen

[matt]

Thanks everyone.

Your kind words and feedback are much appreciated.

I wish we were getting a few more clear sunset nights to capture more data while Venus is at a good elongation...but we've not been too lucky of late.

Ah well...can't win 'em all.