[gregbradley]

Originally Posted by DavidTrap

Greg - have a look at my comments towards the bottom of page 1 of this thread.

I have some spacers on order to see if they correct this problem. Will let you know what I find, but my hunch is that prime lenses are the way to go. Also, I wonder if your pushing the friendship using a 35mm format lens on a 16803 chip - might you be better off with a 6x7 lens?

DT

Thanks for that David. I only tried the 14-24mm Nikon once and it gave bad coma. So I switched to another lens. I think you are right in that the adapter is designed for a conservative distance to ensure you can achieve an infinity focus with some room left over. For example the 50mm focuses at 7m on the scale. So its a fair way off infinity which I guess means its a bit closer in than it needs to be. I also am finding the adapter goes into the filter wheel a tad too much interfering with filter changes.

I can unscrew it a little but that loosens things up. I possibly can play with it to get it further out and secure.

I have used Pentax 67 lenses and have a separate adapter for them. I have done quite a few shots with them.

I have a Samyang 24mm F1.4 lens.

Yes we shouls share info on this as its not a common setup.

Originally Posted by ourkind

Stunning Greg! As above I've just spent the last 10mins looking at it

Thanks Carlos. I appreciate your comment. I have a 3 panel mosaic done in Ha and I am shooting the luminance and colour at the moment. I expect the total image will be around 12 hours.

Originally Posted by jase

What a ripper Greg! Well done! If you can manage the Ha blend with the chrominance data, it should make for a splendid image.

Yes that's something that came up at AAIC that I intend to implement. Thanks for the tip/

Originally Posted by Paul Haese

Looks like a great field of view. Look forward to the finished result.

Cheers Paul. Its looking promising although Ha taken with no moon seems to have more contrast than that taken with a moon present.
I may have to reshoot the Ha for the other panels. Not sure yet.

Greg.