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
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
?
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
?
Hi Glen,
Not sure, may be due to the lower resolution 34kb jpeg I used? Perhaps someone else would know.
Regards philip
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
?
Hi Glen,
Not sure, may be due to the lower resolution 34kb jpeg I used? Perhaps someone else would know.
Regards 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.
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.
Thanks for the advice will try processing as you suggest.
Regards philip
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
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?
Hi Andy ,
Yes I am using a UV/IR cut filter.
Regards philip
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
