Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· 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

Equipment Discussions >> ATM, Optics and DIY Forum

Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | (show all)
justforfun
newbie


Reged: 08/28/08

Loc: Lees Summit, MO USA
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6203196 - 11/19/13 08:41 AM

I have been following this great project for some time.

Might it be possible for you to post some photos of the parts being machined?

I have as much interest in how something is done as what is being done.

Thanks


Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: justforfun]
      #6204889 - 11/19/13 11:20 PM

I'll try to take some pictures of the last parts I'll make as I just finished working on the bearing blocks and housing parts for the Declination sub-assembly. They're currently being anodized, and I will probably put them together this week-end.

I finished the floors of the observatory. I ended up using 2x6 12" on center that's all I had. Joists are covered by 23/32" plywood. The whole thing seems pretty strong.



to the walls now..


Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6206451 - 11/20/13 08:55 PM

here's the first wall - I need a second pair of hand to get it in place though ^_^



Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6212341 - 11/23/13 11:15 PM

I've got the 4 walls up - I'll cover them with OSB tomorrow, then probably do the concrete for the two footings that will hold the structure for the roll-off rails.




Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6214028 - 11/24/13 08:48 PM

Today I got the OSB done on the 4 walls and the siding on 3 of the 4 walls.



Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6242520 - 12/09/13 12:11 PM

I haven't been super lucky with the weather lately - ~6in of snow on Saturday kept me from doing the last footing and lay the structure for the roll-off rails. It's looking better for next week-end.
Meanwhile, I started working on the new CF tubes since the original length was slightly too long for the final specs of the optics. I ended up using thicker wall and larger OD for the CF tubes (redoing the tube ends and support).

I've got the DEC shaft done as well as the two bearing blocks for DEC (you can see those on the pic below).




Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6256520 - 12/16/13 03:42 PM

Hi,
My optics are finally here!
I have next week off so I should be able to get a bit of work done.


Post Extras: Print Post   Remind Me!   Notify Moderator  
R Botero
Pooh-Bah


Reged: 01/02/09

Loc: Kent, England
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6256668 - 12/16/13 05:20 PM

Great news Stephen! Looking forward to seeing the mirrors mounted.

Post Extras: Print Post   Remind Me!   Notify Moderator  
dmcnally
super member
*****

Reged: 03/17/12

Loc: Lompoc, CA
Re: 17" CDK and Equatorial Mounting new [Re: R Botero]
      #6261741 - 12/19/13 11:28 AM

Thanks for sharing the build process. I just found this thread and I think your design and craftsmanship is awesome.

Quote:

Next is the second Delrin washer and the installation of four M3x8 dowel pins. These will force the whole clutch to spin with the shaft and preventing to loosen/tighten. Since I use a “captain wheel” that screws onto the shaft to compress the clutch spring,




The quote above is from your "EQ-Z – RA Housing and Shaft Assembly (Part 1)" web page.
Do you have any pictures you could post of the clutch spring assembly that show how it mates to the dowel pins?

thanks,
Dave


Post Extras: Print Post   Remind Me!   Notify Moderator  
seryddwr
Innocent Bystander
*****

Reged: 02/19/10

Loc: La-la land.
Re: 17" CDK and Equatorial Mounting new [Re: dmcnally]
      #6261802 - 12/19/13 12:13 PM

Stephen, a lot of the early pics in this thread are showing the broken image icon. Is the website where you were hosting them dead?

Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: seryddwr]
      #6261830 - 12/19/13 12:34 PM

Hi,

Dave:

Here's a quick section view that shows the pins (you can only see 2 of the 4 in this view).




Greg:

yes, I decided to move my WP.com to a WP.org blog. While I was able to have all the images working on the new blog, most of the forums links are broken, and most CN posts are old enough that I can no longer edit them.

all pictures are available on the blog though (zytratech.com)


Post Extras: Print Post   Remind Me!   Notify Moderator  
dmcnally
super member
*****

Reged: 03/17/12

Loc: Lompoc, CA
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6261868 - 12/19/13 12:55 PM

Hi Stephen,

Thanks for posting the drawing. Again, fantastic craftsmanship on the mount and the CDK.

thanks,
Dave


Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: dmcnally]
      #6263903 - 12/20/13 02:53 PM

I haven't opened up the optics yet, however I finished putting together the DEC gear housing. Just like for RA, the rolled aluminum part is one of the few parts I didn't do and I am not super satisfied with the respect of tolerances, not a big deal since I kind of expected and took that into account.

With a bit of luck I should be able to do the roof next week, in which case I could finally start finalizing the assembly of the mount.



Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6269611 - 12/23/13 10:32 PM

The roll-off structure is finally done.



Uploaded with ImageShack.us

Hoping to have a roof before the end of the week


Post Extras: Print Post   Remind Me!   Notify Moderator  
tim57064
Pooh-Bah
*****

Reged: 08/23/12

Loc: Southeast South Dakota,USA
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6270695 - 12/24/13 01:37 PM

Stephen,Looks like things are coming along nicely.

Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: tim57064]
      #6278324 - 12/29/13 12:24 AM



Just gotta put on the shingles and the roof will be done


Post Extras: Print Post   Remind Me!   Notify Moderator  
MKV
Carpal Tunnel
*****

Reged: 01/20/11

Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6278906 - 12/29/13 10:56 AM

Stephen, you do realize everyone is holding their breath and waiting for the jaw-dropping finish and some deep sky photos. That's truly an amazing project.

regards,
Mladen


Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: MKV]
      #6279273 - 12/29/13 02:20 PM

Thanks Mladen, I'm holding my breath too haha

Post Extras: Print Post   Remind Me!   Notify Moderator  
TxStars
Pooh-Bah
*****

Reged: 10/01/05

Loc: Lost In Space
Re: 17" CDK and Equatorial Mounting new [Re: zytrahus]
      #6279306 - 12/29/13 02:44 PM

You could always remake the DEC gear cover out of a solid piece.
The other day I ordered a 4"x13"x17" piece of 6061 to mill a DEC housing from for my Series II.


Post Extras: Print Post   Remind Me!   Notify Moderator  
zytrahus
professor emeritus


Reged: 06/16/09

Loc: Long Beach, CA
Re: 17" CDK and Equatorial Mounting new [Re: TxStars]
      #6279480 - 12/29/13 04:19 PM

Yep but it won't be worth it, there isn't that much of a gap and it doesn't affect anything.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | (show all)


Extra information
19 registered and 22 anonymous users are browsing this forum.

Moderator:  ausastronomer, richard7, Starman81 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 22935

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics