Halos around the stars with my ASI290MC

Hello,

I tried my new camera this night, an ASI290MC. I tried it on the deep sky and on the moon.

The result, I'm very desapointed. I've a halo around the stars and on the limbe of the moon.

See the pictures.

I use this camera with a Megrez 72mm.

Do you have a solution ?

Thanks,

Frank

this is because the pixel size of 290 is very small

so the magnification is high

it looks like some reflection inside your optics

So, I tried this camera with a Megrez 72mm refractor.

I hope to try it quickly (depend of the weather) on my Celestron C9.

I'll be back as soon as possible to give you the result.

Hi,

I tested the camera with my Celestron and all it's perfect.

Thanks and have a nice day.