ICEINSPACE
Most Read Articles
Moon Phase
CURRENT MOON Waxing Gibbous
63.6%
The Sun Now
Time Zones
Sydney
3:21 am
Perth
1:21 am
Auckland
5:21 am
New York*
1:21 pm
Paris*
7:21 pm
GMT
5:21 pm




Go Back   IceInSpace > Equipment > ATM and DIY Projects

Reply
 
Thread Tools Rate Thread
  #21  
Old 21-03-2018, 06:39 PM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
Thanks Joe, regarding the Ronchi.....I was worried about that too.....
I'll look into it after the GP......
Reply With Quote
  #22  
Old 05-04-2018, 03:37 PM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
After a week at the F1GP in Melbourne, and Easter Festivities, I managed to get a little bit more progress on this project:

The stack of aluminium bits and pieces are now welded together and the visible external welds have been ground back ready for the powder coating, including all external edges which have been rounded over by draw-filing and sanding.

The mirror support sling linear bearings are installed on M10x110 s/s cap screws and the MoonLite truss clamps are installed (only one bolt each until their exact angle is known).

The 18pt cell is yet to be dismantled fully for some TLC on the buffer and new glide pads are yet to be installed....

Next project is the UTA which will be traditional design but with carbon struts and kevlar baffle....
Attached Thumbnails
Click for full-size image (MIS_5572.jpg)
180.7 KB69 views
Click for full-size image (MIS_5571.jpg)
97.7 KB57 views
Click for full-size image (MIS_5574.jpg)
105.5 KB62 views
Click for full-size image (MIS_5576.jpg)
129.0 KB57 views
Click for full-size image (MIS_5578.jpg)
108.0 KB56 views
Click for full-size image (MIS_5582.jpg)
189.4 KB56 views
Reply With Quote
  #23  
Old 05-04-2018, 03:45 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 8,040
Beautiful job Matt - great to see no half-arsed "She'll be roit" attitude here, but a thorough approach to gratifying, meticulous attention to detail.
Reply With Quote
  #24  
Old 05-04-2018, 04:22 PM
Stefan Buda
Registered User

Stefan Buda is offline
 
Join Date: Jul 2013
Location: Melbourne, VIC
Posts: 405
Looking good - I like it.
Reply With Quote
  #25  
Old 05-04-2018, 04:47 PM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
Quote:
Originally Posted by LewisM View Post
Beautiful job Matt - great to see no half-arsed "She'll be roit" attitude here, but a thorough approach to gratifying, meticulous attention to detail.
Thanks Lewis, lots to do still but I expect to "First Light" it before the end of June

Quote:
Originally Posted by Stefan Buda View Post
Looking good - I like it.
Thanks Stefan, much appreciated
Reply With Quote
  #26  
Old 05-04-2018, 05:17 PM
croweater (Richard)
Don't Panic!

croweater is offline
 
Join Date: Feb 2015
Location: Millicent, South Australia
Posts: 193
Nice workmanship Matt. Pleasure to look at (already). Cheers, Richard.
Reply With Quote
  #27  
Old 07-04-2018, 08:44 AM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
Quote:
Originally Posted by croweater View Post
Nice workmanship Matt. Pleasure to look at (already). Cheers, Richard.
Thanks Richard, slow progress at the moment, hopefully I'll get more time for this project in the coming weeks...
Reply With Quote
  #28  
Old 14-05-2018, 10:43 AM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
Still very slow progress while waiting for parts from China, USA and Germany.....

Here is a picture of test fitting of the truss poles and UTA frame..

also a closeup of the beautiful Aurora Precision UTA Clamps which are now installed. The truss tubes are ExelComposites JTW100 full carbon and are now epoxied into the 1.25" aluminium sleeves to which the Aurora Precision clamps attach with s/s socket screws.

While waiting for Mr Postman I decided that the Telrad should match the carbon/kevlar baffle of the UTA so it now sports 0.25mm thick blue/black kevlar/carbon gloss panels attached with 3M 468MP Transfer tape.....

Next little bit will be the focuser board which will be a 6.0mm thick full carbon panel with 0.5mm kevlar/carbon sheet bonded to the outer face .....
Attached Thumbnails
Click for full-size image (MIS_5596 (1).jpg)
100.0 KB91 views
Click for full-size image (MIS_5599.jpg)
184.1 KB73 views
Click for full-size image (MIS_5602.jpg)
172.7 KB57 views

Last edited by Kunama; 14-05-2018 at 10:55 AM.
Reply With Quote
  #29  
Old 14-05-2018, 01:14 PM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 8,040
There is First Class, and then there is Kunama Class
Reply With Quote
  #30  
Old 14-05-2018, 02:06 PM
FlashDrive's Avatar
FlashDrive (Col)
Senior Citizen

FlashDrive is offline
 
Join Date: Apr 2008
Location: Brisbane North
Posts: 3,518
Wonderful Job Matt ..... 1st Class Work

Col....
Reply With Quote
  #31  
Old 24-05-2018, 07:45 PM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
Managed to sneak out into the shed for a few hours this week:

UTA now complete

Focuser board is 3mm twill weave carbon fibre panel attached to a pair of 12mm aluminium struts that have been lightened by milling out the unseen side..

Baffle is a sheet of blue kevlar/black carbon twill weave sheet 0.5mm thick (or should that be 'thin') with high gloss epoxy on the outside and kevlar fabric on the inside... (this stuff is tough !!!, went through 3 blades just to cut the focuser hole..)

Focuser is the FTF2015BCR with integrated SIPS Paracorr

Spider is the Astrosystems Heavy Duty II with matching secondary holder with Bob's Knobs and Astrosystems 1/12 4.5"

The UTA clamps from Aurora Precision now have ratchet clamp levers replacing the round knobs to make turning them a little easier...
Attached Thumbnails
Click for full-size image (MIS_5611.jpg)
122.0 KB81 views
Click for full-size image (MIS_5612.jpg)
133.7 KB78 views
Click for full-size image (MIS_5614.jpg)
106.8 KB79 views
Click for full-size image (MIS_5615 (1).jpg)
127.0 KB79 views
Reply With Quote
  #32  
Old 24-05-2018, 08:23 PM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is offline
 
Join Date: Aug 2011
Location: Melbourne
Posts: 5,447
Doesn't look like there is far to go now
Reply With Quote
  #33  
Old 28-05-2018, 07:24 AM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
Hi Colin,
Just the ALT bearings to make and then it's off to the Powder Coaters for the mirror box, rocker box and AZi bearing plate.... I am also considering removable truss pole extensions of about 120mm that once taken off will allow binoviewing without any GPC in the path...
Reply With Quote
  #34  
Old 28-05-2018, 12:19 PM
thebonz (John)
Registered User

thebonz is offline
 
Join Date: Sep 2008
Location: bendigo
Posts: 67
Sir lancelot

Just do it
BinoBonz
Reply With Quote
  #35  
Old 28-05-2018, 03:28 PM
FlashDrive's Avatar
FlashDrive (Col)
Senior Citizen

FlashDrive is offline
 
Join Date: Apr 2008
Location: Brisbane North
Posts: 3,518
Coming along nicely Matt .... very nice infact.

Col...
Reply With Quote
  #36  
Old 02-06-2018, 05:28 PM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
Made a new set of cable slings today:

Using prestretched 2mm s/s wire and 10mm linear bearings on s/s M10x100 cap screws, I covered the bearings with heat shrink tubing, then fitted 19mm anodised clamps and s/s turnbuckles to complete the pair.

Each sling runs from the top corner to the diagonally opposed bottom corner, crossing under the mirror, they are located in place using 19mm s/a velcro tape...

Very smooth operation, any movement of the collimation screw is seen as movement of the linear bearings...

(For those asking why?..... this design keeps the mirror perfectly centred without the need for guide posts)
Attached Thumbnails
Click for full-size image (MIS_5630.jpg)
86.5 KB45 views
Click for full-size image (MIS_5633.jpg)
155.4 KB62 views
Reply With Quote
  #37  
Old 14-06-2018, 04:50 PM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
With many thanks to Stefan Buda, who very generously gave up his time to assist with the design idea and then provided the DXF files, I now have the Altitude Bearing arcs ready for the next stage.

Stefan also provided advice on the mounting plates and then drew them up on CAD overnight for me

Many thanks also to John Langridge of CALM Aluminium @ Minto, for his excellent service, water-jet cutting them out of 1/2" aluminium plate. I sent the DXF files to John on Monday and had the finished parts in Canberra first thing Wednesday at a huge saving over the local people.
Attached Thumbnails
Click for full-size image (MIS_5649.jpg)
116.4 KB46 views
Click for full-size image (MIS_5652.jpg)
94.8 KB16 views

Last edited by Kunama; 21-06-2018 at 07:14 AM.
Reply With Quote
  #38  
Old 14-06-2018, 05:01 PM
croweater (Richard)
Don't Panic!

croweater is offline
 
Join Date: Feb 2015
Location: Millicent, South Australia
Posts: 193
Looking good Matt. I hope Stefan is passing his skills down to someone because some of the stuff he is doing is amazing. Cheers Richard
Reply With Quote
  #39  
Old 14-06-2018, 09:00 PM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
Quote:
Originally Posted by croweater View Post
.......I hope Stefan is passing his skills down to someone because some of the stuff he is doing is amazing. Cheers Richard
I concur Richard
Reply With Quote
  #40  
Old 22-06-2018, 06:07 PM
Kunama (Matt)
MSO Vagrant

Kunama is offline
 
Join Date: Sep 2012
Location: Garran, ACT
Posts: 3,409
A little more progress this week, this time on the lower half of the scope...
Mirror box, rocker box, handles, axles and alt bearings are now at ACT Powder Coating ....
Hooray !!!

The Alt Bearings are demountable, each being held on by 3 M8x20mm Stainless steel cap screws which screw into stainless steel 'pucks' that are bolted to the sides of the mirror box,
and once they are removed the mirror box and its precious cargo drop down inside the rocker box for more compact storage....

For anyone wanting a challenge, try hand tapping threads for 18 M6x1.0mm bolts into work hardened 6mm thick 316 grade stainless steel plates......... guaranteed to test your patience !!!

(that's the theory anyways...)
Attached Thumbnails
Click for full-size image (MIS_5655.jpg)
153.3 KB56 views

Last edited by Kunama; 22-06-2018 at 06:25 PM.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 03:21 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement
OzScopes Authorised Dealer
Advertisement
SkyWatcher 2018 Catalogue
Advertisement
FLI Cameras and Imaging Accessories
Advertisement
NexDome Observatories
Advertisement
SkyWatcher WiFi Adaptor
Advertisement
Interest Free Finance
Advertisement
Lunatico Astronomical
Advertisement
Atik Horizon
Advertisement
Astronomy and Electronics Centre
Advertisement