PHD report, will you approve?

[The Jackal]

Hi Guys

So I was tracking Eta Carine the other night and wanted to know if you guys would be happy with my phd results. I am not to sure if I am accurate enough. If you do think this is good or bad please explain what on the image tells you that it is good or bad.

Much appreciated

Jack

[swag72]

I have long since learned to look at the image rather than become a slave to the guide graph. Are your stars round? Are you happy with the subs? If so, then that would be my main concern.

I make no apologies for probably being a little unusual in this respect  Lets see a sub

[graemlourens]

Hi Jackal.

Looks good to me. I would make the scale smaller on the bottom left, as you can not really see the real 'corrections'.

The bullseye tells you pretty much everything in this case, that most of your corrections are pretty much in the range of 0.5" what is very acceptable for shorter focal lengths (as you're getting carina i doubt your long focal lengthed)

Btw, Pleased to meet you, i'm a fellow South African from Capetown!

Envy your weather down there, up here in Warsaw i get 1 clear night a month!

Regards, Graem

[The Jackal]

Hi Jackal.

Looks good to me. I would make the scale smaller on the bottom left, as you can not really see the real 'corrections'.

The bullseye tells you pretty much everything in this case, that most of your corrections are pretty much in the range of 0.5" what is very acceptable for shorter focal lengths (as you're getting carina i doubt your long focal lengthed)

Btw, Pleased to meet you, i'm a fellow South African from Capetown!

Envy your weather down there, up here in Warsaw i get 1 clear night a month!

Regards, Graem

Hi Gream

Very nice to meat a fellow South African here on the forums. I was just asking as my image had a slight blur on the left hand side which was a concern to me. I think I worry to much about the small detail. Some of my pictures when shooting 240second exposures came out blurred and I always think this will hinder the stacking process and give me a blurred results.

Anyway here is the image I was shooting during that tracking graph.

[kens]

Its hard to say if its a good graph or not. The scale is not shown but it appears to be showing pixels. In my version of PHD when I choose Arc-Seconds under Settings, the seconds symbol " is shown next to the numbers on the y-axis. So if the graph is in pixels it then depends on how many arc-seconds per pixel.

It would be better to attach the guide log than a screen shot as all the necessary data is in the log. Enable the guide log under Tools

[graemlourens]

The 'Blur' on the left hand side is because of a flat-field problem. 

When you're imaging with a big sensor (like dslr's have) you will be having this problem with pretty much every scope except the highend ones.

Normally people buy 'field flatteners' that flatten the image further out to the corner, but even with FF you will on FX Sensors in most moderately priced scopes have that effect at the edge of the sensor (should be the same on the right, bottom and top)

If the stars in the middle are perfectly round, then its not a guiding issue, but a flat field issue.

Maybe you quickly elaborate on your setup?

But in any case: the image is amazing! wondering with that 'stuff' you shot it. (Maybe put it in your signature, so you don't have to repeat your setup with every inquiry on this forum )

Regards, Graem