· Each column represents a different hour. The colors of the blocks are the colors from CMC's forecast maps for that hour. The two numbers at the top of a column is the time. A digit 1 on top of a 3 means 13:00 or 1pm. It's local time, in 24hr format. (Local time for Stellafane is hours from GMT.)
The mirror is usable but would be improved with recoating. All of the bearings work smoothly. The eraser tips that keep the mirror from flopping forward should probably be replaced (this cell design is typical of John). The Telrad that was on it is also included. So, if you'd really love to have a genuine Dobson telescope, signed by the Master ...
Stellafane, Home of the Springfield Telescope Makers Inc., Springfield, Vermont, USA, Amatuer Telescope Making . Cleaning a Mirror. Paul Valleli is a retired professional optician and longtime member of the Springfield Telescope Makers. Mirror Cleaning the Vermont Way. by Paul A. Valleli, from a procedure developed at ITEK Optical Lab about 1955. Recipe. Liquid Ivory Dishwashing Detergent ...
· Festivals for amateur telescope makers like Johan and Leané take place all over the world. One of the largest in the United States is called Stellafane, and it takes place every August in ...
Apr 25, 2020 Articles on building a Dobsonian Telescope and Newtonian Optical Tube Assembly.
You can learn more about them by visiting their website: It is something that I have been wanting to visit since I was a teenager and I finally got the chance to go. And it was a remarkable experience. And I have two mirrors that I will be making into telescopes (4 1/4, and 8").
Jun 15, 2015 Articles on building a Dobsonian Telescope and Newtonian Optical Tube Assembly.
· Maiarotos Win at Stellafane : Steve Maiaroto and his grandson, Steve, entered their 8inch f/7 telescope in the 2019 Stellafane optical and mechanical competitions. They won second place for optics in the " and under egory and honorable mention for mechanical. Steve originally ground his mirror at The Franklin
Or imagine the primary mirror in the standard cell that provides for tip or angle adjustments where the cell can be moved side to side and up and down. For example, the two point mirror edge support can be built on a plate with slow motion controls such that the mirror slides to and fro. Then all the adjustments are made right there at the primary mirror. The adjustments can be motorized too ...
Newtonian telescope is its primary mirror. Most Newtonian primary mirrors have either a spherical or a parabolic shaped concave face. Unlike most other mirrors in your home, the mirror coating of a Newtonian mirror is actually applied to the front face of the glass, not the back. The light collected by the Newtonian primary mirror does not pass through any glass until it reaches the eyepiece ...
stellafane primary mirror cell stellafane home of the. Stellafane ATM Fine Grinding. Fine grinding refines the basic shape you have ground into the surface of the glass with rough grinding The sequence of ever finer grits that you use smoothes the rough surface that was made in rough grinding and prepares you for polishing You are also refining
I used Stellafane's couder mask page and Nils Olof Carlin and Ken Slater page to calculate the zone radius. Both returned the same numbers. You can see what details I entered for my 6 inch mirror and numbers it returned for each zone. Why percent of area is % to be excluded from the center of mirror? Because it gave zone 1 inner radius ...
Setup the mirror on the stand and use ronchi tester to look at reflected light through the screen at very near to CoC position. If your mirror is spherical, Ronchi lines will be straight both inside and outside of CoC. Best position to judge the surface when you see 35 lines both inside and outside. When I first tested my mirror, it was oblate ...
· Mirror making machines are diversion all of their own, not necessarily a labor saving device for the inexperienced. Its probably the case that until anyone learns the subtleties of producing a superb mirror by hand, that they will never make a good mirror by machine . Part of the art of making mirrors on a machine is learning to introduce ...
· Enlarging Stellafane Dosbonian Telescope design posted in ATM, Optics and DIY Forum: Hello Cloudy Nights, this is my first post, but I have a question about the stellafane telescope design, specifically the primary mirror cell (Stellafane link). I am trying to make a stellafane telescope with a 10 inch F5 lens Mirror, but I am not sure how the design scales.
· It consists of the following: UPCO/Criterion RV6 primary mirror, recoated at Stellafane. Unknown primary mirror cell. Brand new GSO " secondary mirror. Cave fiberglass tube focuser. Criterion RV6 mount pedestal. ATM'ed extra counterweight (bonus) Criterion Dynamax 8 .
Apr 25, 2020 Articles on building a Dobsonian Telescope and Newtonian Optical Tube Assembly.
· The cell to tube design doesn't really allow it to move back. I don't think tightening the primary's collimation bolts would be enough or possibly necessary, but 1/8" to 1/4" is probably doable. The input measurement I put into the end of tube to mirror's .
· Has anyone here Volunteered at Stellafane? posted in Astronomy Clubs, Star Parties, Shows, Conferences: Im considering volunteering at Stellafane this year, but have a few questions. What sort of help are they looking for? Is it possible to just volunteer before the star party but not during? I come a long way to go there, and dont want to miss any talks because Im already committed to ...
· Stellafane is hosted by the Springfield Telescope Makers, one of the oldest clubs in the country. The club started in 1920 as an offshoot from telescopemaking classes taught by local resident Russell Porter. Porter is considered to be the father of amateur telescope making and in many ways the modern hobby of amateur astronomy itself. Through local classes and global articles appearing in
Mirror Cells Mirror Cells for Amateur Telescope Makers Johan Vanbeselaeres Mirror Cell Design Help Coulter Makeover Part 1 An Easy to Make Six Point Mirror Cell Schmidling's Mirror Cell PLOP Mirror Cell Design 8 Inch Mirror Cell CCD The Audine Project Cookbook CCD camera Home Page Kodak: Solid State Image Sensors
· StellafaneDonationScope (SDS) posted in Vendor and Group Announcements: All,I have a very exciting announcement here, that some of you who attended NEAF and those of you who subscribe to Astronomy Technology Today (ATT) magazine may have already heard about the StellafaneDonationScope (SDS)!To paraphrase the first article that I wrote for ATT about this .
stellafane primary mirror cell stellafane home of the,lscrusher Heavy Industry Technology is a jointstock enterprise that mainly produces large and mediumsized series of crushers, sand making machines, and mills, and integrates RD, production and sales. he company regards product quality as the life of the company. The products have passed ISO9001:2000 international quality system ...
