+RonC Posted July 23, 2019 Share Posted July 23, 2019 (edited) Took this image with the Starlite OSC last night for the first time using the SW 150PDS. I aimed at the North America nebula and took a few 300 sec images. No filters were used. On stacking and using CS3 I could not idenitfy the stars? On solving in Astrometry it turns out they are in the centre of the nebula ( HD199870 etc) but there is no hint of the nebulosity??? Comments please? Edited July 23, 2019 by Ron Clarke added text Link to comment Share on other sites More sharing options...
+Graham Posted July 23, 2019 Share Posted July 23, 2019 I would hazard a guess that it is due to the close up nature of the image Ron. The Neb is all the red stuff you can see in the background. For the wispy Neb to really show up you are going to need an HA filter or a focal reducer. Link to comment Share on other sites More sharing options...
+RonC Posted July 23, 2019 Author Share Posted July 23, 2019 No room for a Focal reducer and I will have to save for an Ha filter (2"!) so I must be more selective with the targets or use the DSLR!!? Link to comment Share on other sites More sharing options...
+Graham Posted July 23, 2019 Share Posted July 23, 2019 You should be able to use a 1.25 filter with that camera Ron if you connect the camera direct to the filter wheel. Link to comment Share on other sites More sharing options...
+RonC Posted July 23, 2019 Author Share Posted July 23, 2019 Filter wheel!! Got some thinking to do !! Link to comment Share on other sites More sharing options...
+Graham Posted July 23, 2019 Share Posted July 23, 2019 (edited) If not screw your filter into the nose piece. I am assuming you have a 1.25 nose piece on the camera Edited July 23, 2019 by Graham Link to comment Share on other sites More sharing options...
+RonC Posted July 24, 2019 Author Share Posted July 24, 2019 I don't use that Graham, train is; focuser, coma corrector, adjustable spacer (which needs altering I think!) and CCD. I'll have a think and a 'tinker' and see what I can do! Ron Link to comment Share on other sites More sharing options...
+RonC Posted July 24, 2019 Author Share Posted July 24, 2019 Found a 1.25" 0.5 reducer, fitted it on the slim nose of the cam but can't see anyway to fit the Coma corrector. Will try a few things out tonight if it stays clear!! Ron Link to comment Share on other sites More sharing options...
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