Anyone know what this is?

[Franklin]

Just been out having a play around with my new to me star-tracker and I took a 30sec exposure of an area in Taurus. Capturing the Hyades, Pleiades and Mars (please feel free to laugh as I have not got a clue what I'm doing).

When I zoomed in on the Pleiades I noticed a blue interloper which is not on any of my charts or Stellarium ???

 

[vlaiv]

It might as well be blue hot pixel.

Do you have raw data or did you just record jpeg image with your camera?

It is better to record raw data and then do a bit of processing on it as things as hot pixels are quite obvious then. Jpeg compression will mess things up a bit and it will be harder to tell.

[Franklin]

Camera set on RAW but downloaded onto computer so it may have changed format. Out of my depth to be honest, oh well I haven't discovered a super-nova then🤣.

[Peter Drew]

Quote

 

Never mind, probably just a comet.     🙂

[Franklin]

43 minutes ago, Peter Drew said:

Never mind, probably just a comet.   

I wish.

@vlaiv was right, as ever! Just done another 20sec with a 200mm lens and there's nothing there but stars!