epaddict Posted July 11, 2014 Share Posted July 11, 2014 I'm new to his forum but I've been lurking for sometime, actually I've been shopping around for a forum with level headed folks with good info and I think this is the one. I live in the great Pacific Northwest and I've been a novice for years, but recently I've been pouring a little more into my hobby. I have 10" dob and two Celestron star finders (a 5" and a 6") but I primarily use the dob. I realize now for the first time that I'm an eyepiece addict...my wife is pulling her hair out when she see's my amazon account but...!Anyway, I have a question to anyone that has a dob: I recently purchased an ES 30mm 82 and I'm getting a shadow right in the center of it. I love ES ep's and I've never had this problems with others I have. I'm wondering if this is my scope or could this be defective. I've played around with a tube extender and no matter what I do I get this shadow. I have a 20mm UWA Meade 5000 that's just fine, the 30 mm that came with the scope doesn't do this either. Have I reached the limit of this scope maybe? It actually appears as though I'm seeing the collimation circle in my primary mirror, if that's the case should I send this back and look at a 24mm or is there a fix...sorry for writing a book. Gary Link to comment Share on other sites More sharing options...
swag72 Posted July 11, 2014 Share Posted July 11, 2014 Hi Gary and welcome to SGL - Sadly can't help you on the visual front, I can count on one hand the number of times I've looked through my scopes!!! Good to have you on board though, hope you enjoy it Look forward to seeing you around Link to comment Share on other sites More sharing options...
ScottS Posted July 11, 2014 Share Posted July 11, 2014 It's the secondary obstruction you are seeing I think. Link to comment Share on other sites More sharing options...
ScottS Posted July 11, 2014 Share Posted July 11, 2014 Have a read of this. Link to comment Share on other sites More sharing options...
scuffer Posted July 11, 2014 Share Posted July 11, 2014 Hello ep addict , I have the same 'problem' with my 32mm 2" ep , only noticeable on something bright , usually the moon Link to comment Share on other sites More sharing options...
wavydavy Posted July 11, 2014 Share Posted July 11, 2014 Welcome..........also hope you get it sorted. Sorry im more an imager than observer though....... Link to comment Share on other sites More sharing options...
Mr Spock Posted July 11, 2014 Share Posted July 11, 2014 Hi, welcome to SGL What you are seeing is the secondary. You get this with low powered eyepieces in a short focal length Newt. I used to have a 10" f4.7 and could never use my 42mm eyepiece because of this. I settled for 22mm as my lowest power. Link to comment Share on other sites More sharing options...
JamesM Posted July 11, 2014 Share Posted July 11, 2014 Hi and welcome to the forumClear skiesJames Link to comment Share on other sites More sharing options...
avtaram Posted July 11, 2014 Share Posted July 11, 2014 Hello Garry welcome to SGL.Avtar Link to comment Share on other sites More sharing options...
epaddict Posted July 11, 2014 Author Share Posted July 11, 2014 Thank you all! I guess I'll send this 30mm back and look at omething else like the 24mm. Link to comment Share on other sites More sharing options...
Ulaw Posted July 12, 2014 Share Posted July 12, 2014 Hello and welcome to SGLPaul Link to comment Share on other sites More sharing options...
gingergeek Posted July 12, 2014 Share Posted July 12, 2014 Hi there and welcome to SGL Link to comment Share on other sites More sharing options...
glowjet Posted July 12, 2014 Share Posted July 12, 2014 Hi Epaddict and welcome to SGL, shame about the 30mm 82 ES ep, their range of optics are very nice indeed. Just my idea, but If you have access to a 2" x2 Barlow check to see if the shadow disappears with this in the system. Enjoy your Astronomy Link to comment Share on other sites More sharing options...
PeterCPC Posted July 12, 2014 Share Posted July 12, 2014 Hi and welcome.Peter Link to comment Share on other sites More sharing options...
Jim Steele Posted July 12, 2014 Share Posted July 12, 2014 Hi Gary and welcome to SGL. I agree ep's are addictive. Good luck and clear skies Ben Link to comment Share on other sites More sharing options...
C7tsj Posted July 12, 2014 Share Posted July 12, 2014 Hi and welcome.Mark Link to comment Share on other sites More sharing options...
Charon Posted July 12, 2014 Share Posted July 12, 2014 Welcome aboard. Link to comment Share on other sites More sharing options...
OscarTheGrouch Posted July 12, 2014 Share Posted July 12, 2014 Welcome Link to comment Share on other sites More sharing options...
cockney Posted July 12, 2014 Share Posted July 12, 2014 hi gary welcome to SGL. Link to comment Share on other sites More sharing options...
purdo Posted July 12, 2014 Share Posted July 12, 2014 Hi Gary & Welcome to SGL. Link to comment Share on other sites More sharing options...
Sandraj Posted July 13, 2014 Share Posted July 13, 2014 Hello Gary and welcome. Link to comment Share on other sites More sharing options...
Pete Presland Posted July 13, 2014 Share Posted July 13, 2014 Hi welcome to SGL from Pete in Bedfordshire Link to comment Share on other sites More sharing options...
epaddict Posted July 13, 2014 Author Share Posted July 13, 2014 Thanks for all the greetings! No longer lurking! Link to comment Share on other sites More sharing options...
michigander Posted July 13, 2014 Share Posted July 13, 2014 Welcome to SGL, Gary!Dana Link to comment Share on other sites More sharing options...
Blind Pugh Posted July 13, 2014 Share Posted July 13, 2014 Greetings and welcome from Tiree. I hope that you enjoy this site as much as I do. Link to comment Share on other sites More sharing options...
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