Mars last night 150ED reprocessed.., last reply

[5ash]

Took this picture between 8.30 and 9.00pm last night before mars reached its highest point. This was a 20% stack of 20,000 frames taken with a ASI290 MC through a x2 Meade barlow attached to a SW 150ED. Processed in autostakker, registax and gimp2.
Any suggestions on processing and capture welcome
Regards philip

[gregbradley]

Very nice.

Greg.

[glend]

Nice image Sash, I might have to put that scope on my EAA equipment list.
Can I ask one question, when I zoom in on your Mars image I see an over layer grid pattern, almost like it was shot through a window screen. Do you know what caused that
?

[5ash]

Hi Glen,
Not sure, may be due to the lower resolution 34kb jpeg I used? Perhaps someone else would know.
Regards philip

[5ash]

Hi Glen,
Not sure, may be due to the lower resolution 34kb jpeg I used? Perhaps someone else would know.
Regards philip

[Max Vondel]

Lovely image, Thanks

[h0ughy]

awesome result.

[Tulloch]

Very good result Philip.

The checkerbox pattern is most likely caused by the wavelet sharpening in Registax being a little too high - you might need to up the denoise level a bit.

You could also try using the 1.5x drizzle mode in AS!3 to increase the final image size - it's a pretty easy way to increase the size of the image without too many artefacts appearing. Note that with a larger image size, you will also need to increase the sharpening values in Registax accordingly.

[5ash]

Thanks for the advice will try processing as you suggest.
Regards philip

[andyc]

Hi Philip, this is a really excellent result for the aperture. Did you use a UV/IR cut filter? This should help for the colour camera. Colour balance looks a bit red just now, may be worth adjusting a little?

One thing you did get as well is the developing dust storm in Mariner Valley, which has been prominent in a few images over the last couple of days, well done!

I'm pretty sure the grid is a Registax sharpening artefact - can be cleared with a 'despeckle' or other noise reduction process

[5ash]

Hi Andy ,
Yes I am using a UV/IR cut filter.
Regards philip

[5ash]

This is the same picture 1.5x drizzled, x2enlarged , wavelets 1-3 sharpened and denoised, RGB aligned and histogram adjusted.. still struggling with all the things to do.Not quite sure about the colour?
Thanks for all the suggestionxs, regards philip

[multiweb]

Very good. You can really see the dust from the storms. :thumbsup: