What did I capture?

[Skywave]

TL;DR Summary

I was capturing an area of the sky and picked up something that I cannot explain. I need to find out how to find out what it is.

I was capturing an area of the sky using my Seestar S50, and there is something in the picture that I cannot explain. The capture has been going to about 40 minutes, and during that entire time it has moved around 3mm on my screen (and it is still going).

I've looked at Stellarium, and looked at online images, and this line does not appear anywhere.

How do I go about finding out what it is?
PS. I'm a noob. Only had my scope for about 1 month or so.

 

[DaveC426913]

Hard to assume it's a celestial object. Could be a spider in a web in the foreground for all we know.

But let's pretend it's actually celestial.
I assume your Seestar has autotrkacing.
What were you pointing at? What is the object you were tracking?
What mag are you set at?

A stationary object in your FoV over 40 minutes would span 10 degrees of sky.

 

[Skywave]

Cone Nebula.
Will upload a full pic in a bit.
Viewing from Krugersdorp, South Africa (-26.08, 27.78).

 

[Skywave]

Seestar has auto tracking.
I've restarted capturing, and the line continues from where it left off. None of the other stars are creating trails, so I'm assuming the tracking is working fine.
Pointing at NGC 2264 (according to the app, and as stated I am a noob, so I have to believe this)
There is no place for a spider to make a web in the view of the telescope, so I can confidently rule that out.
"Mag"? Are you referring to magnification? If so, the Seestar doesn't have settings for magnification. It just does the 10sec exposures, and stacks. (The Seestar has an aperture of 50mm and a focal length of 250mm)

 

[russ_watters]

Is that a crop from a larger picture? What camera settings did you use?

 

[Skywave]

Is that a crop from a larger picture? What camera settings did you use?

Yes, it's a crop. The full image is on my 2nd post.
The Seestar doesn't have camera settings, except for enabling or disabling the internal light pollution filter, which was not enabled.

 

[Tom.G]

The sensor datasheet shows:
(https://www.google.com/url?q=https:...m/files/62/flyer_security/IMX462LQR_Flyer.pdf)
1920x1080 pixels
pixel dimensions 2.9μm square
sensor diagonal 6.46mm, aspect ratio 1/2.8

The optics:
(https://www.google.com/url?q=https://i.seestar.com/owe__prod/static/manuals/SeestarManualEN.pdf)
Focal Length 250mm
Aperture 50mm
f/5

I tried finding the Field Of View from the above but was getting nonsense answers. Maybe someone else here will have better luck.

Cheers,
Tom

 

[Skywave]

The sensor datasheet shows:
(https://www.google.com/url?q=https:...m/files/62/flyer_security/IMX462LQR_Flyer.pdf)
1920x1080 pixels
pixel dimensions 2.9μm square
sensor diagonal 6.46mm, aspect ratio 1/2.8

The optics:
(https://www.google.com/url?q=https://i.seestar.com/owe__prod/static/manuals/SeestarManualEN.pdf)
Focal Length 250mm
Aperture 50mm
f/5

I tried finding the Field Of View from the above but was getting nonsense answers. Maybe someone else here will have better luck.

Cheers,
Tom

Hi Tom

Thanks for all that info. Here is the FoV you need (I had it setup in Stellarium)

 

[Skywave]

24hour followup: It's still (roughly) there.

So now I'm thinking it might be a GSO satellite?

 

[Skywave]

Mystery solved!
(A bit sad that I cannot name it Planet Bob).
But... I've captured Tyche :)

 

[DAH]

I haven't done much astronomy myself but I'd say thats pretty impressive to capture an asteroid within a month of observing.