Hi again chaps,
I dont know, but just in case anyones still interested in the curved types of spiders used in my pics - heres a great article from
CN
http://www.cloudynights.com/item.php?item_id=511
I havent taken many pics thru f6 8" dob to show you quality - but here is a rough single shot of mars from august 03 - taken with a 35mm film camera on a tripod /105mm lens pointing from a distance into a 32mm EP, in the backyard - the film is fuji NPZ 800 so not known for good reds ssoooo - colour is in important in planetary views of course :-)