just trying to work out what causes coma in an sct

[TJD]

just wondering what causes coma in an sct i would like to get rid of the coma in my sct but first i need to learn what causes it:help:

[Bassnut]

Lack of money. (for an RC) :D

[TJD]

ok but what causes it and lack of money bassnut you said lack of money to me yes thats right to me you can buy me one go a head please:P

[chris lewis]

Some info which may help;

http://www.astrosurf.com/luxorion/reports-coma.htm

http://www.cloudynights.com/item.php?item_id=1847

Chris

[AlexN]

If you want to get rid of the coma from your SCT, buy a F/6.3 reducer/corrector.. They are relatively cheap and reduce the coma significantly. Should you want to remove the coma without reducing the system from F/10, then you could PERHAPS have a custom made lens element made to do the job.. although that would be pricey..

[mozzie]

it doesnt realy bother me buy some good quality eyepieces and keep the object in the centre that is the sweet spot there aint no coma there
mozzie

[TJD]

great websites the first one is alot on other things that i love reading about and the 2nd one is great it gets straight to the piont great web sites thanks:jump: