Messier 14

[Graeme]

I appear to have tweaked my settings adequately to get half decent guiding. Here's the first frame of a set I'm capturing tonight of M14.

Capture.jpg

[ChrisGreaves]

Here's the first frame of a set I'm capturing tonight of M14.

With two satellite tracks?
Cheers, Chris

[GeoffW]

He's not the Messier, he's just a naughty boy.

[Graeme]

Here's the first frame of a set I'm capturing tonight of M14.

With two satellite tracks?
Cheers, Chris

Yes! Good start would you say?

[HansV]

[Graeme]

Here's the finished image, 1 hour total exposure of 3 minute subframes.

M14_EL.jpg

The shadow at the bottom is the off axis guider, I need to adjust that, but I'm happy with one fix at a time!

Graeme

[HansV]

Very good - lots of detail!

[ChrisGreaves]

Here's the finished image, 1 hour total exposure of 3 minute subframes.

So twenty images (i.e. twenty sets of numeric data to be processed)?
Those satellite tracks: They might have been sufficiently off-centre to be cropped from the edges, but if they had passed across this object, would you have to drop one or two specific frames of data? That is, just delete those exposures (as you would if you had taken twenty photographic film negatives).

The shadow at the bottom is the off axis guider, I need to adjust that, but I'm happy with one fix at a time!

I don't see any shadow at all.

Whatever, well constructed (or well-re-assembled).
Chris

PS Can you give me a rough idea of the ratio of data size (in bytes) between (a) the raw data captured by your astronimic gear and (b) the published image size?
Thanks, Chris