Richard W

Hello I have a OOUK 10" and funny you should say that I have 2 small black specks when it arrive in November last year and after last nights session I just checked and I have 6! So I'm guessing the posts are correct and it is from the matt pain on the inside! It is annoying and I'm afraid to take out the primary and use 'air' to blow it clean. Guess it needs to be done at some point. When I climate (I use a the deluxe Cheshire from Flo plus I'm paranoid about the Secondary so I use the Concenter and for me it helped the paranoia and it was a 'Ureka' moment when I understood what I was looking at from the great instructions given to me through this site) I use paper to block of the primary and I know I'm prushing the inside of the tube and that is dislodging very small loose paint! The Concenter was expensive but really worked by the way. I'm also new into astronomy and last night was great (after spending Saturday afternoon for nearly an hour collimating) so I'm not seeing issues ..... ACTUALLY the real issue is at my age is I have a floater in the eye and looking at the Trapezium in the Orion nebular (I think that's correct??) on high power it did flick across my field of view and this is the first time I noticed it!! Power Pack for fan I got from Flo (honestly I'm not promoting them deliberately, I just have had great advice) a Celestron Powertank Lithium LT plus I got a pack of male and female connectors from Amazon from a suggestion from Flo support and I cut the crocodile clips off and connected the correct polarities on the male plug and 12v supply works perfect! I was just nervous of using open terminal clips as I have a 6 year old with interest and I could see her touching thinks or knocking them very easily. To be honest it can be a little daunting att first but my local group Astronomy group chairman came to my house to collimating initially as I was in a panic - so great people out there to help on the journey! Cheers Richard

Thank you for the post Steve and I do wonder what my pupil dilation is at 63 and a half!? I do not understand Coma correction but i do have an astigmatism so need to check my prescription and get the right Dioptrx. Thank you again Richard

Hi Stu Well it's the left and I'm right handed. Thanks for information on Telrad that helps immensely to explain in pictures also. Yet again thank you and now it's post Christmas budget review and a little shopping! Excellent Richard

Hi Stu and Ed Again fantastic information and I was reading about Exit pupil size as I'm 63 and looking at 6mm for myself is best guess. So 27 mm Panoptic looks the best solution. I'll check my focuser as regard your suggestions Ed. .... just checked and it is a brass collar which moves around as the lock screw is turned inwards. The insert is coming out a little easier now so thank you. Telrad, I've heard good things, so my question is how is it attached if you still use the finder scope and that attachment to the body of the scope? My finder has a 45 degree eye piece which was an option I thought would make life easier - which it dose and the image is the correct way round. Another reason I was taken by TeleView was the astigmatism correction and I would look into this next using my prescription but funny question now: which eye?? Thank you for your time in responding to my post, really great information and brilliant. Richard

Thank you Ed for the very informative feedback - excellent! Did check finder this morning and it is 8x50 so you are correct, thank you. Yes, the TeleVue 27 Panoptic was one of the serious options I was considering. The insert ring for 1.25", is there a technique for getting out without the difficulty of shaking/moving the whole scope!! Thank you for the explanations also - very helpful at this stage. Tonight looks a possibility to do some viewing! Richard

Hello and this is my first post, so with trepidation and a little embarrassment, could I ask a question on what would be best eye piece I should select for a low magnification for a wide field of view to help find objects. Background: In November I received my long awaited 10" Dobsonian (f4.8) from Orion Optics UK - I had done some back ground reading and I had borrowed a 6" home made Dob from a wonderful character who is chair of a local Astronomy Association (I was hooked) but felt paying that little more for a 10" and a higher level of polish on the mirror would be a better longer term investment of enjoyment! Also went mad and brought 5mm, 11mm and 18.2 mm Tele View Delites. Now I'm struggling to locate objects (now they are in focus after a lot of trial and error in collimation) I have a 32mm Plossel that cost me £10 and when I tried it I could see the spider and a dark centre of the secondary ... so with all this my question lead me what is the minimum magnification to getter a wider view to help me to navigate around the sky. My finder scope is x50 (I think) but it makes it harder to identify when I search the sky. A link from this site took me to a Tele View calculator and the Flo Optics field of view demo is great but I'm lacking a little confidence if it should be a 27mm or a 31 mm etc .....! Hope you can advise or am I just making things to complicated for myself? Thank you