Tony1967 Posted October 9, 2019 Share Posted October 9, 2019 I have a new meade sct that's out of collimation, i have never had the need to collimate my previous telescopes before is this difficult to do, here are some photos of the refocused star images. Link to comment Share on other sites More sharing options...
CraigT82 Posted October 9, 2019 Share Posted October 9, 2019 Wow that's really out of whack... must have had a very bumpy ride during delivery! Collimating SCTs is relatively easy and best done on a bright star in good seeing. If you line up the diagonal with of of the secondary screws that helps with knowing which screw to turn. The secondary screws only usually require small adjustments... turn and look, turn and look etc. Gradually getting that spot back to the centre. Your manual should tell you what you need to know but theres plenty of tutorials on youtube. Just be extra careful with Allen keys near the corrector plate! Link to comment Share on other sites More sharing options...
Tony1967 Posted October 9, 2019 Author Share Posted October 9, 2019 Thanks for the advice. Link to comment Share on other sites More sharing options...
johninderby Posted October 9, 2019 Share Posted October 9, 2019 I’ve found this is a really down to earth guide to SCT colomation. https://skywatch.brainiac.com/collimation.pdf Link to comment Share on other sites More sharing options...
Tony1967 Posted October 9, 2019 Author Share Posted October 9, 2019 Thanks Link to comment Share on other sites More sharing options...
Peter Drew Posted October 9, 2019 Share Posted October 9, 2019 As already said, very small tweaks are all that it is needed. Make sure that the star is central in the field of view when assessing the collimation. When this looks good check again at high magnification and fairly close to focus. Polaris is a good test star, doesn't move much and is of a suitable magnitude. 😀 Link to comment Share on other sites More sharing options...
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