loocin Posted January 24, 2012 Share Posted January 24, 2012 A very good morning to everyone, I am a very new member and wish to ask aboutthe focusing of the DSI.As the manual says, you can focus on a terrestrial object but in my case the imageis pulsating as if it is trying all the time to focus but never doing so. Can this be normal on earth objects or am I doing something wrong? I do not want to set up on "deep space" and then find that this is happening.Would appreciate any info and help. Many thanks. Link to comment Share on other sites More sharing options...
Stephen Green Posted January 24, 2012 Share Posted January 24, 2012 Hi a warm welcome to the SGL:icon_confused: Stephen Link to comment Share on other sites More sharing options...
todd8137 Posted January 24, 2012 Share Posted January 24, 2012 could this be heat haze was the scope cooled down? was the scope inside or out,what scope and eq are you use in the camera with ? focal reducer or not ? more info please on set up ect Link to comment Share on other sites More sharing options...
mcsheffield Posted January 24, 2012 Share Posted January 24, 2012 Hi, Welcome to SGL. Link to comment Share on other sites More sharing options...
loocin Posted January 24, 2012 Author Share Posted January 24, 2012 Thank you WhiteDwarf for your early reply.Setup is inside thru open window Eq 3..... have considered viberationand this does happen on using the focus control, must say that thescope is a home-made 102mm, 48" focus, not the steadist of set upsbut I do stand back and allow any vibes. to settle but the image isstill wandering, the eyepiece is 5/8" ortho with rack and pinion.Hope the will help you.thanks again,Colin Link to comment Share on other sites More sharing options...
loocin Posted January 24, 2012 Author Share Posted January 24, 2012 Thank you for an early reply White Dwarf.Setup is inside thru open window on Eq3... have considered viberation and this does happen on using focus control, must say that the scopeis a home made 4" refractor, crown and flint fran haufer og 48" focus,not hte steadiest of setups but I do allow the vibes. tosettle but the image still wandering, eyepeice is 5/8" ortho. with rack and pinion.Hope this will help.Thanks again.Colin Link to comment Share on other sites More sharing options...
Russe Posted January 24, 2012 Share Posted January 24, 2012 From inside you should never try out a scope as you pic up hot air streaming out of the window making your view wobbly. This might be a probable explanation.---I am here: http://maps.google.com/maps?ll=51.599154,-3.799597 Link to comment Share on other sites More sharing options...
loocin Posted January 24, 2012 Author Share Posted January 24, 2012 Many thanks and point taken, I must admit, the frequency of the pulsing variesand this is probably the reason why, different current of air passing thru. the window.Colin Link to comment Share on other sites More sharing options...
Russe Posted January 24, 2012 Share Posted January 24, 2012 I tried as well and failed ---I am here: http://maps.google.com/maps?ll=51.599188,-3.799758 Link to comment Share on other sites More sharing options...
Tinker1947 Posted January 24, 2012 Share Posted January 24, 2012 Welcome to SGL, hope your problems gets sorted... Link to comment Share on other sites More sharing options...
Rusty Strings Posted January 24, 2012 Share Posted January 24, 2012 Hi and welcome from me too Link to comment Share on other sites More sharing options...
Zul Posted January 24, 2012 Share Posted January 24, 2012 Hello & Welcome! Link to comment Share on other sites More sharing options...
JamesM Posted January 24, 2012 Share Posted January 24, 2012 Hi and welcome to the forum and hope your problem has now been resolved.Clear skiesJames Link to comment Share on other sites More sharing options...
Orion_the_Hunter Posted January 24, 2012 Share Posted January 24, 2012 Hi & welcome! Link to comment Share on other sites More sharing options...
Bizibilder Posted January 24, 2012 Share Posted January 24, 2012 Hello Colin and welcome to SGL!! Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.