Smudge on Image

[Dag 1]

Totally new to this.  I've just been testing out my new GP Cam3 on an Equinox 100ED with the camera mounted directly in the eyepiece holder.

I'm getting a black smudge on the images.  I've looked at the glass over the sensor and it looks clean as does the objective lens of the scope.  The smudge doesn't move if I rotate the camera or move the scope, I've turned the scope around 90 degrees and rotated the camera back upright but the smudge stays in exactly the same position (see attached).  It does change slightly in size with the focuser.

Does anyone have any idea what it could be or is the camera faulty? 

[Davey-T]

Just take some flats, they should remove it.

You probably need a magnifying glass to find it.

Dave

[Dag 1]

11 minutes ago, Davey-T said:

Just take some flats, they should remove it.

You probably need a magnifying glass to find it.

Dave

Dave thanks, could be dust then?

What's throwing me is that it's in the same place irrespective of camera orientation.

 

[wimvb]

It's the shadow of a very small dust particle, either on the sensor cover glas or the camera cover glass. It's on the camera, that's why it doesn't move. Either way, it's very close to the sensor. If you can remove it with a blower (not you blowing on it, neither with canned air), do that. Taking flats should also help, as long as the dust doesn't move.

[Dag 1]

10 minutes ago, wimvb said:

It's the shadow of a very small dust particle, either on the sensor cover glas or the camera cover glass. It's on the camera, that's why it doesn't move. Either way, it's very close to the sensor. If you can remove it with a blower (not you blowing on it, neither with canned air), do that. Taking flats should also help, as long as the dust doesn't move.

Great, I'll get a blower, main thing is that it's not the camera, it's a 5 hour round trip to get it changed.

[cjdawson]

Looks like a dust bunny to me. (as others said, very small particle of something)    I'd not bother trying to clean it off, just take a few flats and that'll solve it in the astro image.

Also over time, it'll most likely move on it's own over time.

[kendg]

When you do blow it out, make sure the sensor is pointing down and you are blowing up. That was the dust with fall out rather than being moved around on the sensor. ?

[MarsG76]

Definitely a speck on the sensor.... blow it off with a blower bubble... that will sort out that little spekky.