rwiederrich
Goldfinger
Reged: 11/17/05
Posts: 8306
Loc: Bremerton Washington
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A fellow member has asked me to assist him in the fabrication of his 1" X 12.5" plate glass blank into an f/6 mirror.
After a week or so of distraction...I tooled it up on the polisher and began grinding out the sagitta. Left to itself most of the day with a water drip..I cut the near 5mm sagittal depth. Here are some initial pics of the job being done on my porter polishing machine.
Rob
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www.goldmtobservingcenter.com
A great place for amateur astronomers, and ATM's to come and enjoy their hobby.
http://tech.groups.yahoo.com/group/HomemadeRefractorTelescopes/ My homemade refractor group.
www.vimeo.com/6014031
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rwiederrich
Goldfinger
Reged: 11/17/05
Posts: 8306
Loc: Bremerton Washington
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A bit closer view of the diamond blade doing its business.
--------------------
www.goldmtobservingcenter.com
A great place for amateur astronomers, and ATM's to come and enjoy their hobby.
http://tech.groups.yahoo.com/group/HomemadeRefractorTelescopes/ My homemade refractor group.
www.vimeo.com/6014031
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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Wow thats so cool to see.....thats got my blood pumping again,lol.
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102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
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rwiederrich
Goldfinger
Reged: 11/17/05
Posts: 8306
Loc: Bremerton Washington
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Quote:
Wow thats so cool to see.....thats got my blood pumping again,lol.
Aint it fun......
I'll double check the sagittal depth before I make the stone grinding tool....it was nearly close and it might even be a bit deaper then I intended(no problem)...it's all good.
Glad your blood's pumping again.... 
Rob
--------------------
www.goldmtobservingcenter.com
A great place for amateur astronomers, and ATM's to come and enjoy their hobby.
http://tech.groups.yahoo.com/group/HomemadeRefractorTelescopes/ My homemade refractor group.
www.vimeo.com/6014031
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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if its slightly less than f/6 it doesnt matter.Its all good,lol 
--------------------
102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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Any updates?
--------------------
102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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guess not...lol
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102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
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rwiederrich
Goldfinger
Reged: 11/17/05
Posts: 8306
Loc: Bremerton Washington
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Quote:
guess not...lol
Sorry bro...I'm in the middle of a move...so I'll get to it a bit later. Its full groung to the correct sagitta..just got to make the penny tool for fine grinding.
Believe me...I'll keep you in touch with every step. I'm done working on my 10"f/16 for now...so your mirror will be on the dockets for my attention.... 
Rob
--------------------
www.goldmtobservingcenter.com
A great place for amateur astronomers, and ATM's to come and enjoy their hobby.
http://tech.groups.yahoo.com/group/HomemadeRefractorTelescopes/ My homemade refractor group.
www.vimeo.com/6014031
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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I thought you lived at GOMOC...LOL.where moving to?
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102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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|
--------------------
102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
|
rwiederrich
Goldfinger
Reged: 11/17/05
Posts: 8306
Loc: Bremerton Washington
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Quote:
I thought you lived at GOMOC...LOL.where moving to?
I do...my office is next to my house...I have to move from my house to my office...  The slowing economy has me making life changes. I'm not selling it, just renting it.
The kids have and are moving away so life needs less house to survive. I still have my shops and my scope making ability...just more cramped.
I'm sorry I haven't worked on your mirror for some time...but I simply do not have the time currently. I did unload that monster 4 tub mirror making machine from my horse trailor..yesterday(cuz I'm selling the trailor too).
That thing will be great when making several mirrors/lenses at the same time. It is pre WW2 and is built like a tank. It weighs more then 1500lb. It is so nifty how it works and operates. 
I'll get back to scope making when I get fully moved....no worries. I still haven't opened that package you sent...I'm holding off till I feal satisfied with the mirror...just in case. 
Rob
--------------------
www.goldmtobservingcenter.com
A great place for amateur astronomers, and ATM's to come and enjoy their hobby.
http://tech.groups.yahoo.com/group/HomemadeRefractorTelescopes/ My homemade refractor group.
www.vimeo.com/6014031
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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I wish you would open that box and at least inspectthe contents.So I can quit worrying that something is wrong with it.,hehehehehehehehe
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102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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--------------------
102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
|
rwiederrich
Goldfinger
Reged: 11/17/05
Posts: 8306
Loc: Bremerton Washington
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I'm sure everything is fine.....it looks like you used the original box....
I'll make the fine grinding lap next week.
Rob
--------------------
www.goldmtobservingcenter.com
A great place for amateur astronomers, and ATM's to come and enjoy their hobby.
http://tech.groups.yahoo.com/group/HomemadeRefractorTelescopes/ My homemade refractor group.
www.vimeo.com/6014031
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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sweet look forward to seeing it.
--------------------
102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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back from the star party.Hope you had a good shoot.
--------------------
102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
|
rwiederrich
Goldfinger
Reged: 11/17/05
Posts: 8306
Loc: Bremerton Washington
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Quote:
back from the star party.Hope you had a good shoot.
Yes...I have been monitoring that thread line through out its duration....Did you have a good time...
Sure you did.. 
I canceled that too...it rained/hailed so hard any outdoor activity was unadvisable.... 
I'm aiming for next weekend..but that too looks funky.
I might just have to default to my Aug 15th date and leave it at that.
I worked on your mirror a bit more the other day. I needed to work on the sagitta a bit more..cuz I actually needed to make it deeper...
I'm tinkering....still.
Rob
--------------------
www.goldmtobservingcenter.com
A great place for amateur astronomers, and ATM's to come and enjoy their hobby.
http://tech.groups.yahoo.com/group/HomemadeRefractorTelescopes/ My homemade refractor group.
www.vimeo.com/6014031
|
droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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I picked up the remains of Jasons (undermidnight) 12.5 inch ball scope.
The mirror cell will have to be fit dead center on an 18 inch back plate.
This thing is so cool, long rods that thread into the back plate which allow collimation from the top, how cool is that.
Jason was using commercial truss poles with ball on theyre ends, Ill have to work on that, as I doubt they were cheap.
And Ill need ot find 2 inch focuser some how.
Any ways take care.
--------------------
102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
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Undermidnight
Pounder of Brass
Reged: 05/25/04
Posts: 2421
Loc: Hilliard, Ohio
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Andy,
The focuser was a Kineoptics HC-2 (www.kineoptics.com) and the truss system was from Moonlight (www.focuser.com). The truss system is not cheap, but worth it.
The mirror cell should be good to use for your mirror, you would just have to make an 18 point cell for it. The three holes in the mirror cell would be a good starting point 
As you embark on the madness.. er.. uh... adventure of making your own scope, let me know how I can help.
Jason
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WO Megrez 90 on EZTouch Mount
WO Zenithstar 66 on Microstar Mount
PST
8" F/4.2 Ball Scope, "Marilyn"
12.5" F/4.3 Ultralight, "Ada II"
11x70 Oberwerks
6" F/6 Polishing
Pans, Orthos, and Naglers
"We who cut mere stones, must always be envisioning cathedrals." - The Quarry Workers Creed
http://www.undermidnight.com
http://undermidnight.blogspot.com
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droid
rocketman
Reged: 08/29/04
Posts: 4030
Loc: ohio
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ok Jason your on , I have lots of questions....first up.
There arethree studs sticking up out of the bottem plate of the mirror cell, why??
Also...there are three of those little hammer in screw thingys, ones missing, an issue?
And last but not least in this photo.....the other three holes evenly spaced are I assume where the collimation roda screw in??
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102mm Celestron C102HD
Tasco 7TE5 60mm Classic
Tasco 9TE5 60mm Classic
Celestron Ultima 2000 SCT
Remains of an 8 inch dob
Celestron Comet catcher(orange tube)
1960 Edscorp Space Conquerer 6inch f/8
10x50 Bushnell Binoculars.
11T 4.5 inch Tasco reflector Lunograsso?
60mm Telescope Club
|
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