Cygnus widefield, err.

[MARS1960]

I hope some of you knowledgeable guys can tell me why this has happened.

This was taken with a 60D, clip in LP filter, 50mm lens at F2, AZ GTi at 20 secs, the first two subs were fine, the rest like these, It seems it came from the left and advanced right with each sub.

I have just bought a Samyang 135mm F2 so really don't want to make the same mistake again.

 

 

 

Autosave_ABE.tif

Edited July 27, 2021 by MARS1960

[happy-kat]

I would take the clip in filter out and try again.

Plus I would use a lens shield

Edited July 27, 2021 by happy-kat

[MARS1960]

44 minutes ago, happy-kat said:

I would take the clip in filter out and try again.

Plus I would use a lens shield

Thanks, I'll use a lens shield, didnt have one for a 50mm and completely overlooked knocking one up, I just dont understand why first 2 subs were fine.

 I've been using the astronomik clip for years with no issues so think I can rule that out.

 

[happy-kat]

Maybe a neighbour turned a light on and it reflected on lens

[Astro Noodles]

Could it be dew combined with moonlight. Are you using a dew heater?

[MARS1960]

18 minutes ago, happy-kat said:

Maybe a neighbour turned a light on and it reflected on lens

No immediate neighbours to the east but I will check tonight if any of the houses over that way have a security light thanks.

Edited July 27, 2021 by MARS1960

[MARS1960]

2 minutes ago, Astro Noodles said:

Could it be dew combined with moonlight. Are you using a dew heater?

I don't think so, moon was very low and on the opposing side to the curve and it was dew free for the one hour I was out.

I'm stumped 🤔.

Hopefully first light with new Samyang at F2 tomorrow, fingers crossed no further artefacts.