· Get a Cloudy Nights T-Shirt · Submit a Review / Article Click here if you are having trouble logging into the forums Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> Reflectors Previous   Index   Next   Threaded   Pages: << 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | (show all) JohnRW member Reged: 09/02/12 Loc: Oakland, California Re: Post a picture of your reflector - PART 2 [Re: jacobmarchio]       #5432611 - 09/21/12 12:19 PM Edit   Reply   Quote Quick Reply   Nice job aligning Orion above your scope, Jacob! Post Extras:       Pinbout Post Laureate Reged: 02/22/10 Loc: Montclair Re: Post a picture of your reflector - PART 2 [Re: jacobmarchio]       #5432684 - 09/21/12 01:08 PM Edit   Reply   Quote Quick Reply   yeah, nice pic dude, orion above the scope. Post Extras:       jacobmarchio super member Reged: 08/30/12 Loc: Alabama Re: Post a picture of your reflector - PART 2 [Re: Pinbout]       #5432990 - 09/21/12 03:42 PM Edit   Reply   Quote Quick Reply   Thanks guys, I call this my "Orion and Orion" image. It's just a six inch, but it shows a good bunch of stuff Post Extras:       JIM262 member Reged: 11/29/07 Loc: West Nyack, NY Re: Post a picture of your reflector - PART 2 [Re: jacobmarchio]       #5441437 - 09/26/12 11:08 AM Attachment (67 downloads) Edit   Reply   Quote Quick Reply   Here is my 10" F5.5 scope which I made the mirror at this years Delmarva Mirror Making Seminar. What a great experience with so many nice people. Thank you, Delmarva! Post Extras:       JohnRW member Reged: 09/02/12 Loc: Oakland, California Re: Post a picture of your reflector - PART 2 [Re: JIM262]       #5441626 - 09/26/12 01:01 PM Edit   Reply   Quote Quick Reply   Nice scope, Jim! (Looks kinda like an old Cave.) How long did it take you to make the mirror? Post Extras:       JIM262 member Reged: 11/29/07 Loc: West Nyack, NY Re: Post a picture of your reflector - PART 2 [Re: JohnRW]       #5441680 - 09/26/12 01:35 PM Edit   Reply   Quote Quick Reply   John, The mirror blank was pre-cut to a curve for an F6 before I even started. It took a weekend to complete the mirror. There were about 15 other people mirror grinding and testing at Delmarva. We all had a great time and would recommend it to anyone interested. Don Surles is the person who I contacted for information about it. I may go back in 2013 to finish a 12.5 inched I started 30 years ago. Post Extras:       Mirzam Post Laureate Reged: 04/01/08 Loc: Lovettsville, VA Re: Post a picture of your reflector - PART 2 [Re: JIM262]       #5442088 - 09/26/12 05:38 PM Edit   Reply   Quote Quick Reply   Dang! I re-figured a 10" f/6.5 at Delmarva and haven't had time to tube it yet. I'm planning to make it in a classic style like yours using an old Starliner mount. What sort of mount do you have there? JimC Post Extras:       JIM262 member Reged: 11/29/07 Loc: West Nyack, NY Re: Post a picture of your reflector - PART 2 [Re: Mirzam]       #5442530 - 09/26/12 10:01 PM Edit   Reply   Quote Quick Reply   Hi there JimC, The mount is an old Meade model 850. It was for an 8" f8 telescope I have. It seems to handle the 10" ok. Post Extras:       gravitino sage Reged: 04/28/09 Loc: Cache County, Utah Re: Post a picture of your reflector - PART 2 [Re: JIM262]       #5443835 - 09/27/12 04:52 PM Edit   Reply   Quote Quick Reply   Here are my 12.5" f/4.8 (named Equinox) which I built in 2001, and my 22" f/5 (named Cosmos Mariner) which I just finished this year. Post Extras:       yonkrz scholastic sledgehammer Reged: 11/16/06 Loc: SW Minnesota Re: Post a picture of your reflector - PART 2 [Re: gravitino]       #5444104 - 09/27/12 07:42 PM Edit   Reply   Quote Quick Reply   Very nice Shane,I love the GREEN.I cant believe what ten inches of mirror does to a scopes size. Post Extras:       theritz member Reged: 04/12/11 Loc: The Netherlands Re: Post a picture of your reflector - PART 2 [Re: Ed Jones]       #5449529 - 10/01/12 01:44 AM Attachment (72 downloads) Edit   Reply   Quote Quick Reply   Here's my DIY dobsonian. From the looks of it this one is from the late seventies or maybe early eighties. The creator of this telescope was Piet Kuit, who seems to be rather known in the DIY world of dobson making. There's however little to be found about him and he died several years ago. The mirror is damaged unfortunately due to swallow poo which was deposited on the primary when the scope was stored somewhere in Burgundy, France. Without the lid. Yeah. I know. I am about to take it apart. With some mixed feelings because I am then destroying someone else's hard work. But it is not of this day and age anymore: it doesn't move smooth, the spider vane is archaic, the wood of the rockerbox is enormously heavy and the PVC pipe might be sturdy but it is also a backbreaker. So it's going to be redone using modern materials and basically all that will be left of this telescope is the primary and secundary mirror which are supposedly pretty good ("opticon quality"). I am going to have the mirror tested soon. Oh. It's an 8" F... 8...ish. Edited by theritz (10/01/12 01:46 AM) Post Extras:       JohnRW member Reged: 09/02/12 Loc: Oakland, California Re: Post a picture of your reflector - PART 2 [Re: theritz]       #5451260 - 10/02/12 01:45 AM Edit   Reply   Quote Quick Reply   Good luck with that scope, theritz. Don't feel bad about taking it apart, feel good about using the primary elements in a new scope! They could be collecting more swallow poo in a field. Post Extras:       Shawn H Postmaster Reged: 05/16/07 Loc: Equatorial Guinea, West Africa Re: Post a picture of your reflector - PART 2 [Re: gravitino]       #5453237 - 10/03/12 09:07 AM Edit   Reply   Quote Quick Reply   Good gracious bodacious! Mr Larsen!!!! Love that 22" monster canon! Post Extras:       Shawn H Postmaster Reged: 05/16/07 Loc: Equatorial Guinea, West Africa Re: Post a picture of your reflector - PART 2 [Re: theritz]       #5453246 - 10/03/12 09:12 AM Edit   Reply   Quote Quick Reply   theritz Good luck with your project!!!!! We'll need another pic when she has new skin! Post Extras:       plyscope Pooh-Bah Reged: 11/23/06 Loc: Perth, West Australia Re: Post a picture of your reflector - PART 2 [Re: Shawn H]       #5474683 - 10/17/12 09:08 AM Attachment (35 downloads) Edit   Reply   Quote Quick Reply   This is the 12.5" f5.35 dob I've been working on lately. I bought it from the local astro club as an equatorial. I was initially only interested in the equatorial mount but the mirrors seemed to be in good shape so I have made a dob mount for the OTA. The tube is aluminium. I made a new primary cell and fitted an Astrosystems secondary holder and spider as well as a Moonlite focuser. It's big and heavy but goes deeper than anything I've owned before. Post Extras:       plyscope Pooh-Bah Reged: 11/23/06 Loc: Perth, West Australia Re: Post a picture of your reflector - PART 2 [Re: plyscope]       #5474687 - 10/17/12 09:10 AM Attachment (25 downloads) Edit   Reply   Quote Quick Reply   Here is another picture. Post Extras:       Mirzam Post Laureate Reged: 04/01/08 Loc: Lovettsville, VA Re: Post a picture of your reflector - PART 2 [Re: plyscope]       #5474756 - 10/17/12 09:53 AM Edit   Reply   Quote Quick Reply   Very nicely done! JimC Post Extras:       yonkrz scholastic sledgehammer Reged: 11/16/06 Loc: SW Minnesota Re: Post a picture of your reflector - PART 2 [Re: plyscope]       #5475141 - 10/17/12 01:50 PM Edit   Reply   Quote Quick Reply   Nice job Andy. Post Extras:       plyscope Pooh-Bah Reged: 11/23/06 Loc: Perth, West Australia Re: Post a picture of your reflector - PART 2 [Re: yonkrz]       #5475553 - 10/17/12 05:46 PM Edit   Reply   Quote Quick Reply   Thank you Jim and Jeff, I woke early this morning to take a peek at Orion and Jupiter. The Orion nebula was very impressive and I could make out the 5th and 6th stars in the trapezium even with the poor seeing. Jupiter was very bright however the seeing was not good enough to see much detail. There is still a bit of fine tuning to do. Andy Post Extras:       Mirzam Post Laureate Reged: 04/01/08 Loc: Lovettsville, VA Re: Post a picture of your reflector - PART 2 [Re: plyscope]       #5475576 - 10/17/12 05:56 PM Edit   Reply   Quote Quick Reply   I like how you made the rings that hold the tube and altitude bearings. Are they just split at the top and then clamped by bolts through the two longitudinal strips? JimC Post Extras:       Pages: << 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | (show all) Previous   Index   Next   Threaded   Extra information 20 registered and 21 anonymous users are browsing this forum. 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