Share:
Notifications
Clear all

Drizzle artifacts


(@adstottyahoo-com)
Main Sequence Star Customer
Joined: 11 months ago
Posts: 39
Topic starter  
wizard droplet 0.5 scale 2.0 session 1 St

 

This is 17 hours of data, OSC camera, 3 minute subs.  When I do integration without drizzle there is no artifact.  The data is undersampled, dither is 10 pixels.  In the integration tab I have it set to drizzle, droplet size 0.5 and scale 2.0.

 

Any suggestions.  Should I be using the Bayer/Xtrans drizzle?


ReplyQuote
(@vincent-mod)
Universe Admin
Joined: 5 years ago
Posts: 5130
 

Not sure in this case, does this also happen when you increase the droplet size to e.g. 0.7?


ReplyQuote
(@adstottyahoo-com)
Main Sequence Star Customer
Joined: 11 months ago
Posts: 39
Topic starter  

I haven't tried any other size.  I will try 0.7.


ReplyQuote
(@mabula-admin)
Quasar Admin
Joined: 6 years ago
Posts: 3321
 

Hi Andrew @adstottyahoo-com,

The screenshot indicates that with the used settings too little data is receiving drizzle droplets, normally a larger droplet size will fix it quickly.

On the other hand, you seem to have more than enough data for those settings. Was every frame properly dithered?

Mabula


ReplyQuote
(@adstottyahoo-com)
Main Sequence Star Customer
Joined: 11 months ago
Posts: 39
Topic starter  

I double checked my settings in NINA.  When I set these settings into NINA is used a dither calculator; I just double checked the calculations.    I have my guide camera set to 14 pixel dither which is 20 pixel dither on my 294 MC pro.  It's a random dither setting and every third frame is dithered.

This post was modified 2 months ago 2 times by ANDREW STOTT

ReplyQuote
(@adstottyahoo-com)
Main Sequence Star Customer
Joined: 11 months ago
Posts: 39
Topic starter  

Would it help to post the drizzle image to the Synology server and have you take a look at it.  The added noise in the image has an odd appearance as well; difficult to describe.


ReplyQuote
Share: