Thread: Lens in focuser
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  #16  
Old 02-06-2007, 09:02 PM
cristian abarca
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cristian abarca is offline
 
Join Date: Jun 2005
Location: Melbourne Vic
Posts: 290
I think that collimation is most critical in this scope. The bands in Jupiter should be clearly visible as the four moons. I never saw the red spot in Jupiter. Saturn I saw pretty well but I couldn't see the Cassini division. As far as the other planets I saw Neptune as a blue disk at high magnification. Mars I only ever saw as an orange to yellow disk. As far as star clusters ther was no problem nor was there a problem with planetary nebulas. Tuc 47 looked pretty good through it as well, that is until I saw it through a 25 inch from a deep sky site, but that is another story. One of the things that I did change were the screws at the back of the secondary. Instead of the phillips head screws I got allen head screws, they seem to hold a little tighter. I also played around with the focuser because I found that it wasn't in line with the secondary. I placed a washer where the focuser touches the tube. This may not be necessary with yours. As far as the mount goes I put a bottle of water dangling from the centre of the tripod to steady it a little. The sight tube can be a bit of a bugger to get aligned but you can always put a washer underneath to get the alignment easier. But I must reiterate that collimation is the most important and this is not an easy task in this telescope. You have to learn this and learn it well.


Regards Cristian
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