Jump to content
  • Join the online East Midlands astronomy club today!

    With active forums, two dark sites and a knowledgeable membership, East Midlands Stargazers has something for everyone.

What the hell are these?

Guest peepshow

Recommended Posts

Guest peepshow

Just stacked 5 RAW images in DSS.  The settings were standard with just under 50 stars selected.

Here is a big blow up of the result after some processing.

What are those coloured 5 dot patterns that appear at odd in intervals in the image?

.....any connection with the  FIVE stacked images I wonder?


They are not in the original RAW's.


Never seen this before with similar stacking.......any clues anyone?


Also, what are the score values always given in DSS to each loaded RAW file, please?





Edited by peepshow
Link to comment
Share on other sites

Yep, each sub you have there has those same 4 hot pixels. During alignment and stacking the software aligns the stars so if you have any pa alignment issues or rotaion issues the stars will be aligned but the pixels will appear to shift, hence you have 1 hot pixel per sub stretched out in a curve. If you had 20 subs youd have a line of 20 hot pixels.

Darks are the 1st fix

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.