cygnusx1 Posted October 1, 2008 Share Posted October 1, 2008 Celestron 9.25" (2 parts )http://www.btinternet.com/~psmithuk/Focus_Masks/C9_25/PS_C9_25_LHS.pdfhttp://www.btinternet.com/~psmithuk/Focus_Masks/C9_25/PS_C9_25_RHS.pdfWO110http://www.btinternet.com/~psmithuk/Focus_Masks/WO110/PS_WO110.pdfMany thanks, any suggestions as to what to make it out of?What are the concentric circles round the edges of mask meant to be for? Is that just padding out to the mirror/lens width?Yep - gives you options on how you want to mount it..just pic the circle that works for you - my cpc mask fits inside the front cell but i have the advantage of havign the scope here to take the accurate measurements needed for this to work properly ( you also need 2 cutouts to clear the pegs that hold the front cover on if you go down that route) Billy...thanks for clarifying, what would you recommend as an easy material to make the masks out of, considering i don't have a workshop full of cutting tools.... Link to comment Share on other sites More sharing options...
Psychobilly Posted October 1, 2008 Share Posted October 1, 2008 I'd stiff card pref black - if not can always paint it and and give a coat of lacquer... soem peopel have been laminating it with one of those hot laminators before cutting...I have tried art foam board but you dont seem to get teh edge definition with it.Billy... Link to comment Share on other sites More sharing options...
Reggie Posted October 2, 2008 Share Posted October 2, 2008 I used a black plastic folder, cheaper than chips, no need to paint, stiff enough to keep itself rigid and thin enough to cut with a sharp craft knife. Link to comment Share on other sites More sharing options...
Psychobilly Posted October 2, 2008 Share Posted October 2, 2008 Nice one Reggie and "Dew" proof to boot...Billy.... Link to comment Share on other sites More sharing options...
beamish Posted October 2, 2008 Share Posted October 2, 2008 I've just finished mine tonight, looks great !(even if I say so me sen) I printed 2x halves onto photo paper, cut out the slots then transfered it over to some black mounting board, cut them out again, then used an embroidery hoop to fix it to the scope.I've just given the reverse side a quick coat of black spray paint now to cover the cut edges and letting it dry off. Tonight is looking reseanably clear so will hopefully get a chance to try it and perhaps even my first go at autoguiding too !Karlo Link to comment Share on other sites More sharing options...
Psychobilly Posted October 2, 2008 Share Posted October 2, 2008 Hi Karlo ,I Hope you get a clear night and that the mask works for you It's pissistently raining here Billy.. Link to comment Share on other sites More sharing options...
beamish Posted October 2, 2008 Share Posted October 2, 2008 Would you adam and eve it !!!! Have you just jinxed me The skies are starting to cloud up Karlo Link to comment Share on other sites More sharing options...
Psychobilly Posted October 2, 2008 Share Posted October 2, 2008 I'll pull the pins out of my astro voodoo map of the UK then Link to comment Share on other sites More sharing options...
beamish Posted October 2, 2008 Share Posted October 2, 2008 If all goes well I'll post a pic of the finished item and maybe a short avi , Oooooh Karlo. Link to comment Share on other sites More sharing options...
Psychobilly Posted October 4, 2008 Share Posted October 4, 2008 two more added...I'm not sure if is for a skywatcher ED-80 but thats where its ended up...http://www.btinternet.com/~psmithuk/Focus_Masks/Skywatcher_ED80/PS_ED80_FirstOrder.pdfhttp://www.btinternet.com/~psmithuk/Focus_Masks/FL102/PS_FL102_FirstOrder.pdfThese have the concentric trimming rings on the outside so that you can pick the ones that fit the way your going to mount them..Billy... Link to comment Share on other sites More sharing options...
mothershipuk Posted October 4, 2008 Share Posted October 4, 2008 Hi guys, fantastic work Billy. I have eagerly read all the posts on this new focussing aid and believe me as a newcomer to astronomy dabbling in astrophotography this makes things a lot easier.Like many peopole I made/bought a hartmann mask but you are right, as good as they are, it really is difficult to judge precise focus. Billy, would you be able to knock me up a template for a 10" LX90 please. My lense-cap diameter measures 3050mm if that helps. Having read the posts it is clear that the inventor should gain from this. Shame there isnt a website whereby grateful ppl could donate something to him and maybe to Billy too for all his hard work and effort. ps. Billy, if you were able to get your guys to laser cut a metal one I would definitely be interested in getting a price.cheers Justin Link to comment Share on other sites More sharing options...
Psychobilly Posted October 4, 2008 Share Posted October 4, 2008 I'm just producing the templates at the moment for people to use FOC as it seems the easiest thing to do ... also dont want to get into the hassle of the "paying" debate...Give me a dim for the central obstruction and i'll knock up the template - doesn't have to be exact...I would be suprised if the OD was 3050mm as that would be some scope Billy... Link to comment Share on other sites More sharing options...
beamish Posted October 4, 2008 Share Posted October 4, 2008 Black mounting board from Hobby Craft works well Link to comment Share on other sites More sharing options...
Psychobilly Posted October 4, 2008 Share Posted October 4, 2008 Meade LX90 10" 2 part here...http://www.btinternet.com/~psmithuk/Focus_Masks/MeadeLX90_10Inch/PS_10InchLX90_LHS.pdfhttp://www.btinternet.com/~psmithuk/Focus_Masks/MeadeLX90_10Inch/PS_10InchLX90_RHS.pdfBilly... Link to comment Share on other sites More sharing options...
Psychobilly Posted October 4, 2008 Share Posted October 4, 2008 Hi Karlo - Have you tried tried it out yet or just made it ?Billy... Link to comment Share on other sites More sharing options...
mothershipuk Posted October 4, 2008 Share Posted October 4, 2008 Hi Billy,The diameter of the central obstruction is 90 mm and the diameter of the scope is 2970 mm. Please excuse my inexperience with astronomy jargon. I am still learning the lingo DAMN ! That was quick. You are a diamond. Thanks again.CheersJustin Link to comment Share on other sites More sharing options...
Psychobilly Posted October 4, 2008 Share Posted October 4, 2008 it needs tweaking then as i assumed a smaller central obdtruction and based the OD on the figures you posted earlier... still think you need a decimal point in there soemwhere i'll do it an repost... Link to comment Share on other sites More sharing options...
Psychobilly Posted October 4, 2008 Share Posted October 4, 2008 Mothershipuk...They have been updated got back to the pages and click refresh or just save them again..Billy.. Link to comment Share on other sites More sharing options...
beamish Posted October 4, 2008 Share Posted October 4, 2008 Big thanks to Billy for his template ( though I did tweak it a tad ) et al for bringing this to everyone's attention :hello1: :hello1: :hello1: here are some pics of the one I made for the Cape.(click to enlarge)(click to enlarge)(click to enlarge)the blue ring is the "inner" from a 10" embroidery ring Karlo Link to comment Share on other sites More sharing options...
Psychobilly Posted October 4, 2008 Share Posted October 4, 2008 Looking good What tweaks Karlo...I think I need to draw up a quick drawing to show people what dims i really need to be able to make the templates...Billy... Link to comment Share on other sites More sharing options...
gary1968 Posted October 4, 2008 Share Posted October 4, 2008 Thanks to Billy and Blinky I have the drawings for masks for Blinky's and my own scopes, will be knocking them out next week on the turret punch at work, will post pics when done. Not sure the the TPP will be able to get the nice 'sharp' corners that Billy has on the drawings though, will have to wait and see.Gary Link to comment Share on other sites More sharing options...
beamish Posted October 4, 2008 Share Posted October 4, 2008 I extended the outer diameter well beyond the 250mm to provide a lip for easier handling and merely changed my idea as to how to attach it. The ring slips onto a "projection" from the top rather the wider OTA dimeter, which would require a deeper fitting ring. ...not much . That's the problem with the Cape, not many about, next to no 3rd party aftermarket gear and no-one to talk to about it . It tests one's inventive capabilities, like figuring out how to use a SW autofocuser with it- hence the cut-to-length jubilee clip you can see. Big thanks Billy ! Karlo Link to comment Share on other sites More sharing options...
mothershipuk Posted October 4, 2008 Share Posted October 4, 2008 Thanks alot for doing that. LOL My measurement did of course require that decimal point, nice to dream though. My wife reckons I always exaggerate the size of my telescope but thats another post ! Cheers budJustin Link to comment Share on other sites More sharing options...
Psychobilly Posted October 4, 2008 Share Posted October 4, 2008 Tal 1M...http://www.btinternet.com/~psmithuk/Focus_Masks/Tal_1M/PS_TAL1M.pdfLast for the night Billy... Link to comment Share on other sites More sharing options...
Starflyer Posted October 5, 2008 Share Posted October 5, 2008 Hi Billy,Any chance of a layout for a 10" f/6.3 Newt?OD is 290mm and CO is 50mm.The 'scope isn't any particular make - just a generic sort of thing :? Cheers,Ian Link to comment Share on other sites More sharing options...
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