sebiwoo Posted December 27, 2012 Share Posted December 27, 2012 Hi there. I have just bought my first telescope, an 8 inch Dobsonian. I was so excited about using it that as soon as I had put it together I took it outside to look at the moon. I figured I could just point it at the moon and have a look, knowing of course it wouldn't be perfect as I hadn't checked the collimation or aligned the view finder with the telescope. With both the 10mm eyepiece and the 25mm eyepiece supplied with the telescope all I could see was a white blur in my whole field of view. Is this because the magnification is too strong or is it to do with the fact that I haven't checked the collimation etc. I could focus on stars easily enough. Of course I am going to set up the telescope properly before I really start using it but I was just curious to know about the eyepiece magnifications in relation to my scope. Any help would be much appreciated! Link to comment Share on other sites More sharing options...
scoobee Posted December 27, 2012 Share Posted December 27, 2012 hiya sebiwoo, welcome to SGL Link to comment Share on other sites More sharing options...
knobby Posted December 27, 2012 Share Posted December 27, 2012 Could be you've put the 2 inch and the 1.25 inch ep holders in together... We all do that! Just use the 1.25 oneGood luck Link to comment Share on other sites More sharing options...
Bizibilder Posted December 27, 2012 Share Posted December 27, 2012 Hello Sebiwoo and welcome to SGL!! You say you could focus on the stars but not the Moon? I suspect that, as the Moon was near full last night, your eyes were overwhelmed by the brightness of the Moon. Additionally, at around full Moon, there is very little detail visible as there are no shadows to make things like mountains and craters stand out (If you were on the Moon the Sun would appear to be directly overhead - hence little or no shadows). If you look at the edge - where the light and dark parts of the Moon meet - you should be able to see shadows and, after a while to allow youe eyes to adjust, you should start to make out details. Link to comment Share on other sites More sharing options...
moogoomonkey Posted December 27, 2012 Share Posted December 27, 2012 Welcome to SGL! Link to comment Share on other sites More sharing options...
atmenterprises Posted December 27, 2012 Share Posted December 27, 2012 Great scope. Welcome to the forum! Link to comment Share on other sites More sharing options...
VigdisVZ Posted December 27, 2012 Share Posted December 27, 2012 Hi and welcome. It's probably a focus issue, not collimation, but check into both just to be sure. If not just post a detailed description of the problem, maybe with a picture of your focuser, and it should be easily fixable.Glad to have you on board. Link to comment Share on other sites More sharing options...
sebiwoo Posted December 27, 2012 Author Share Posted December 27, 2012 Thanks for the warm welcome guys, this is my first blog of any kind ever! You're right, knobby, i have put both the 2 inch and the 1.25 inch holders in together. Assumed that was the right thing to do! Will sort it right now. When will the cloud and rain end? ( You don't have to answer that.) Link to comment Share on other sites More sharing options...
sebiwoo Posted December 27, 2012 Author Share Posted December 27, 2012 Any advice on good astronomy groups around north cornwall area? Link to comment Share on other sites More sharing options...
wookie1965 Posted December 27, 2012 Share Posted December 27, 2012 A very warm welcome to SGL Link to comment Share on other sites More sharing options...
Welrod50 Posted December 27, 2012 Share Posted December 27, 2012 And welcome from me too sebiwoo. Great scope to start off with and you should see quite a bit if your skies are relatively dark Link to comment Share on other sites More sharing options...
stevetynant Posted December 27, 2012 Share Posted December 27, 2012 Welcome on board sebiwoo - the 1.25 / 2 Inch adaptor trap is one many of us have fallen into - but your on the way now- all we need is some clear sky. looking forward to your first light reportcheersSteve Link to comment Share on other sites More sharing options...
ToxoLight Posted December 27, 2012 Share Posted December 27, 2012 Hi Seb. and welcome to the lounge. Link to comment Share on other sites More sharing options...
saturn4me Posted December 27, 2012 Share Posted December 27, 2012 Hi and welcome to SGL! Enjoy your scope!!It'll keep you entertained for years!! Link to comment Share on other sites More sharing options...
Marc1980 Posted December 27, 2012 Share Posted December 27, 2012 Hi. Welcome to SGL.Sent from my galaxy s3 using tapatalk 2 Link to comment Share on other sites More sharing options...
JamesF Posted December 27, 2012 Share Posted December 27, 2012 Welcome to SGL.James Link to comment Share on other sites More sharing options...
Matt Scunthorpe Posted December 27, 2012 Share Posted December 27, 2012 Welcome to SGL.Matt Link to comment Share on other sites More sharing options...
JamesM Posted December 28, 2012 Share Posted December 28, 2012 Hi and welcome to the forum and congratulations on getting a great performing scope!Clear skiesJames Link to comment Share on other sites More sharing options...
Patrice Lanteigne Posted December 28, 2012 Share Posted December 28, 2012 Hi Seblwoo,I'm new here as well. Did your newtonian's dust cap come with a much smaller cap covering an off centre hole? I like my 8" dob because it's easy to set up and easy to use, but to avoid 'snow blindness' I view the moon's craters through the little opening created by only taking the little cover off. Make sure it's not lined up over one of the secondary vanes and should be good. Link to comment Share on other sites More sharing options...
paul schofield Posted December 28, 2012 Share Posted December 28, 2012 Hello and welcome to SGL. Link to comment Share on other sites More sharing options...
Oily Posted December 28, 2012 Share Posted December 28, 2012 Welcome to SGL Link to comment Share on other sites More sharing options...
glowjet Posted December 28, 2012 Share Posted December 28, 2012 Hi Sebiwoo and welcome to SGL, great new scope and you really should get some rewarding views when you have got to grips with it. Any problems just post in the relevant help/guide sections. If you havn`t already done so, download the free program Stellarium, it will help you find your way about the stars, a copy of the book TL@O could also be of help, as this will guide you to some of the many objects which can be seen in the Constellations throughout the year, enjoy John. Link to comment Share on other sites More sharing options...
michigander Posted December 28, 2012 Share Posted December 28, 2012 Welcome to SGL, Sebiwoo!Dana Link to comment Share on other sites More sharing options...
rwilkey Posted December 28, 2012 Share Posted December 28, 2012 Hi Seb, and welcome to SGL from the Swindon contingent. Great telescope, will keep you occupied for years. Rather than stop the aperture down (by removing the small cap on the dustcover) I prefer to use a Moon filter, a neutral density one - ND96 (0.9) which gives 13% light transmission, I find that just right on my 200P. Link to comment Share on other sites More sharing options...
Charon Posted December 28, 2012 Share Posted December 28, 2012 Welcome to the forum. Link to comment Share on other sites More sharing options...
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