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Found 8 results

  1. Hey guys.Its kronos here, and i m here with my Celestron firstscope.As you know ,its quite small with a focal lenght of 300mm.That means i can clean the mirros without unscrewing anything.What can i use to clean them that i can find in my house?Also can i use babywipes to clean them?
  2. Hey, whenever I clean my eyepieces or filters, theres always a mark left from the cleaning tissue. What am I doing wrong or is this normal? Also, Im using optical grade tissue paper. Is it better to use a microfiber cloth? Thanks for the advice.
  3. Hi, i seem to have a dirty lens on the telescope side of the lens. Anyone disasemble this before ? I already checked the camera, filter, and focal reducer seperatly, the "staines" are from the telescope-side of the lens (already cleaned the outside of the lens to) Flat frame
  4. I have 15mm Vixen LV EP which I bought off Astroboot a few months ago. It's a great EP for viewing with, and used it mostly for whole sun views of the Mercury transit yesterday. My issue with it is I have some coloured filters that I use for mostly planetary views (although I used them yesterday too on the sun to aid views etc), but some of the filters I have when I screw them in to the EP either won't go in correctly, or get tight halfway in when threaded in. I've checked the internal thread on the collar of the EP and that seems OK, with no obvious burrs, or signs of cross threading. I've also tested out the filters that has this issue with the 15mm EP in all my other EP's and don't get any issue when I thread them in to those EP's at all. I think the issue maybe the black paint/coating applied to the thread on the EP is making it tight for the EP's themselves, and due to manufacturing tolerances in sizes some filters will thread in OK, and others don't. My question is is there a simple way to get rid of the black paint in the EP metal collar (only the first 3mm where the filter screws in). If I got some paint stripper and sat the collar in a dish containing some 3mm of solution will this dissolve the paint away OK? The only other issue with the EP is on most of my other EP's the metal collar that the filters screw into can actually be unscrewed from the EP itself. On the Vixen EP if I try to unscrew the collar it also starts to unscrew some of the lower lenses in the EP, and so don't want to unscrew the collar if this might damage the EP by dislodging any internal lenses or other components of the EP itself. Anybody ever tried to clean away this black paint on their EP's before succesfully if they had similar issues? Any advise is welcome.
  5. Hey everyone! I made it out for some stargazing early this morning. I had a really fun morning of viewing doing not only my normal wanderings about the sky, but also watching Venus, Regulus, Mars, and Mercury rise. This was my first time viewing Mercury and it did not disappoint. Anyway, I quickly learned a hard lesson. Though I had stuck my dew shield in, I forgot to put it on the scope. Soon not only was my scope dewed-over, but it froze into frost and there was no way for me to clean my lens. I used a lens cloth to gently try to clear things up, but to no avail. Anyway, I had binoculars and a spotting scope along as well and still had a great time, but I as I got home a question came to mind: There is some minor smudging on my front lens now from the attempted frost clean-up. How often do you all clean your optics? Are you super anal about keeping everything spot free, or do you use things for a little while before giving them a thorough cleaning? Do minor smudges and spots have a noticeable effect on viewing?
  6. Howdy folks Whats the best way to clean a mirror, specifically what i think might be tiny metal flecks without causing scratches ? there arent many and it doesnt affect visual use, but i'm tihnking it might affect taking pictures with it and leaving them in place while moving the scope might cause problems too as they will no doubt move from the vibrations of just moving the scope from one place to another is it doable? or best to leave them where they are ?
  7. A couple of years ago I bought a second hand C9.25. Not sure how I can tell the age of the model but it is grey with orange writing. I use this scope for visual whilst imaging with my refractor & guidescope. Whilst it has always given pleasing views, especially of planets, the image lacks contrast and is a bit soft. I've fitted Bobs Knobs to it but as yet have not properly collimated it. However I've recently bought a Meade f6.3 reducer with a view to having a go at imaging using an off axis guider and the C9.25. The problem is this. The previous owner of this scope had stored it 'objective down'. The primary mirror is in pristine condition but the same can't be said for the rear of the corrector. It's covered in dust and has what look like grease or oil spots. These look like something has dropped onto the glass and spread outwards. I dread to think what the secondary is going to look like. I've decided to take the corrector off and clean it. I will flock the interior also - might as well while I'm in there! I'll take some pictures as I go along and post them here. Wish me luck. www.flickr.com/photos/greggylike/sets/72157632571499958 John
  8. Well... Had a go at cleaning the corrector plate on my 8" EdgeHD today with somewhat mixed results ?. While the glass is much cleaner than before, worrisome dew stains and what looked like pollen marks removed, I am stil less than happy with the results. When caught in the light correctly I can see streaks on the surface of the glass, no doubt left from the cleaning mixture and/or my cleaning technique. Cleaning solution is as recommended by Celestron 60% ISO and 40% distilled water. Also of concern is a coma shaped mark in the bottom left hand corner that I spotted prior to cleaning, and had hoped would be removed during the cleaning process. The mark can be clearly seen in the attached photo. Difficult to know whether the mark has been reduced as a result of the cleaning, possibly wishful thinking on my part. Would welcome some feedback from fellow members who have gone through this process, regarding my results, and also comments regarding the coma shaped mark. Before and after photos attached.
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