Strange artifact in subs

[ApophisAstros]

On checking my subs last night i noticed what i thought was a scratch in the optical train showing in that sub, so checked the sub before and after to check but its not on those so it only appeared in one sub.
Interested to hear anyones take on this.

Ths sub with the artifact was a Luminance and the others were Red and Green.

Roger

Edited August 31, 2019 by apophisOAS

[StuartJPP]

Caused by a cosmic ray. See them often when stacking many subs and looking at what sigma clipping rejects.

[ApophisAstros]

1 hour ago, StuartJPP said:

Caused by a cosmic ray. See them often when stacking many subs and looking at what sigma clipping rejects.

ok thanks, so they may be in many subs?

[dave_galera]

Yes you will get them all the time randomly

[Nikolas74]

I have exactly the same in some frames using an Atik 383....I thought was the camera voltage problem....

[ApophisAstros]

Thanks all , never heard this talked about till now 😎