Search found 6 matches

by rob
Tue Jan 29, 2013 10:48 pm
Forum: Image Processing Troubleshooting
Topic: OSC noise patterns
Replies: 9
Views: 12014

Re: OSC noise patterns

Hi,

Yes it does. I can get the noise down quite a lot with that method.

Thankyou very much.

Rob
by rob
Mon Jan 28, 2013 9:42 pm
Forum: Image Processing Troubleshooting
Topic: OSC noise patterns
Replies: 9
Views: 12014

Re: OSC noise patterns

Great idea, never used it before but this is the link to the 36Mb full tiff

https://www.dropbox.com/s/vzns50qc24bed ... ivers.tiff

And a baby version: https://www.dropbox.com/s/ryxca4nrfs0cs ... _crop.tiff
by rob
Mon Jan 28, 2013 8:23 pm
Forum: Image Processing Troubleshooting
Topic: OSC noise patterns
Replies: 9
Views: 12014

Re: OSC noise patterns

Sorry it's a bit small but the limit is 512kb and that doesn't go far in TIFF land.
NGC7789_rivers_crop.tiff
NGC7789_rivers_crop.tiff (478.68 KiB) Viewed 11986 times
by rob
Sun Jan 27, 2013 12:46 pm
Forum: Image Processing Troubleshooting
Topic: OSC noise patterns
Replies: 9
Views: 12014

Re: OSC noise patterns

I used the upload attachment but I can't see it - I hope you can ?
by rob
Sun Jan 27, 2013 12:44 pm
Forum: Image Processing Troubleshooting
Topic: OSC noise patterns
Replies: 9
Views: 12014

Re: OSC noise patterns

I've attached a small fragment of the image showing the issue.
by rob
Fri Jan 25, 2013 9:47 pm
Forum: Image Processing Troubleshooting
Topic: OSC noise patterns
Replies: 9
Views: 12014

OSC noise patterns

Hi,

Is there an easy way of removing the 'rivers' noise patterns that are prevalent with one shot colour cameras (both cooled and DSLR) ? In my case the image is of a star cluster which has no surrounding dust or nebulosity. These systems can be very fussy when it comes to darks.

Thanks
Robert