Do these look good?

[Poultrybonkers]

Their 17 days old I can still see veins though

these are 3 different eggs

 

[nurse_turtle]

If you see vessels, your eggs are good. If the vessels are not present, your egg is not viable. You may not be able to see vessels later during incubation. Based on your less than optimal pics, those eggs look good to me.

 

[Poultrybonkers]

video of one of them

 

[cmom]

They look good to me.

 

[Josiah Woodfield]

Look fine from your pictures. Google egg candling and you will come up with a lot of pictures. To test fertility, you will see blood vessels developing within the egg after several days. I usually candle mine after a week, just to be sure. At that time you should see a good bit of activity inside. If it is clear after 7 days, your egg is not viable.