Go Back   IceInSpace > Equipment > ATM and DIY Projects

Reply
 
Thread Tools Rate Thread
  #21  
Old 27-02-2013, 02:04 PM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Thanks Simon

I also noted the discrepancy between the M48 filter thread's pitch in the list but left it till I could sort it. From what I know M48 is .75 pitch but I'll do some more searching on this.

There are a myriad of threads that everyone at one stage will need info on. So this is a "work in progress" I'm afraid.

I also only updated this was I am thinking of doing a 50mm finder guide-scope and wanted to know the rear internal thread. Every search I did found new and more info....just gathered momentum so just adding to Doug's thread.
Reply With Quote
  #22  
Old 27-02-2013, 02:07 PM
Astro_Bot's Avatar
Astro_Bot
Registered User

Astro_Bot is offline
 
Join Date: Jun 2012
Location: Brisbane
Posts: 1,605
Meade SCT (or ACF) casing screws:

UNC #8-32, length 3/8", but if securing a finder base, I recommend 5/8" length.
Reply With Quote
  #23  
Old 27-02-2013, 02:13 PM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Quote:
Originally Posted by niko View Post
Brendan,

please provide thread size and pitch for head securing device!



niko
Sorry the bolts are still embedded..... cannot remove them otherwise me head'll fall off!



Attached Thumbnails
Click for full-size image (Herman munster.jpg)
21.5 KB78 views
Reply With Quote
  #24  
Old 27-02-2013, 02:30 PM
MrB's Avatar
MrB (Simon)
Old Man Yells at Cloud

MrB is offline
 
Join Date: Jan 2007
Location: Rockingham WA
Posts: 3,435
Great... while removing the MPCC's T2 nosepiece to re-measure, I just planted a nice big fat greasy thumbprint on the rear element!

I really need to buy a set of soft cotton cloves, saw them at the local library recently and thought 'hmmm what did I need those for? oh well, will buy them when I remember'
That'll learn me!
Reply With Quote
  #25  
Old 27-02-2013, 02:53 PM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Thanks Gents making changes now and will repost list ASAP.

Simon sorry...I didn't want people to take things apart....it's just some people know or have been thru these hoops before and may have inspiring info...sorry for the finger prints.

There are so many differing threads is impractical to list them all...especially us some US companies offer metric and imperial (like thumbscrews) and in general the USA will never change to metric.
Reply With Quote
  #26  
Old 27-02-2013, 03:18 PM
MrB's Avatar
MrB (Simon)
Old Man Yells at Cloud

MrB is offline
 
Join Date: Jan 2007
Location: Rockingham WA
Posts: 3,435
Quote:
Originally Posted by wasyoungonce View Post
Simon sorry...I didn't want people to take things apart....it's just some people know or have been thru these hoops before and may have inspiring info...sorry for the finger prints.
Hah no worries, it was done on my own volition, spurred by curiosity. The nosepiece is designed to be removed when not using the T-ring.
It's my own fault and carelessness for the thumb print.
It was actually a reflex action, the ring dropped as it unscrewed and I instinctively moved to catch it and that's when my thumb planted nicely on the element... grrrrr.
Reply With Quote
  #27  
Old 27-02-2013, 05:36 PM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Ver 1.1 of the threads with new info.

Need to confirm:
1. If M48 filters are .75 or .6mm pitch or both are available.
2. If EQ6 (NEQ6) alt adj bolt (M10) is 1.5mm pitch or 1.25mm or...whatever.

Any other threads others have come across that someone may need to know about in the future.

Many thanks to all.
Attached Files
File Type: zip Astro_Threads ver 1.1.zip (10.4 KB, 111 views)
Reply With Quote
  #28  
Old 27-02-2013, 06:06 PM
MrB's Avatar
MrB (Simon)
Old Man Yells at Cloud

MrB is offline
 
Join Date: Jan 2007
Location: Rockingham WA
Posts: 3,435
Quote:
Originally Posted by wasyoungonce View Post
2. If EQ6 (NEQ6) alt adj bolt (M10) is 1.5mm pitch or 1.25mm or...whatever.
My early EQ6pro has M10 x 1.5 for both Alt and Az bolts. Can't speak for newer models.
Reply With Quote
  #29  
Old 27-02-2013, 06:52 PM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Thanks Simon...will be updated in next version.
Reply With Quote
  #30  
Old 28-02-2013, 05:12 PM
brian nordstrom (As avatar)
Registered User

brian nordstrom is offline
 
Join Date: Apr 2007
Location: Perth WA
Posts: 4,374
Zeiss visual back , M44x1 .
Brian.
Reply With Quote
  #31  
Old 28-02-2013, 05:41 PM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Thanks gents and all

Ver 1.2 of the threads data.

Just want to confirm if OTA clam rings mounting threads are 1/4" x 20tpi with most OEMs? I have read WO has some at 6mm threads but am unsure on this.
Attached Files
File Type: zip Astro_Threads ver 1.2.zip (11.5 KB, 115 views)
Reply With Quote
  #32  
Old 05-03-2013, 09:01 AM
LewisM's Avatar
LewisM
Novichok test rabbit

LewisM is offline
 
Join Date: Aug 2012
Location: Somewhere in the cosmos...
Posts: 10,388
Some Vixen threads:
Standard drawtube, as already mentioned is M60 x 0.75
Older focal reducers- back side attaching to camera or diagonal: M43 x 0.75
Some step-down adapters and rotating rings use M53 x 0.75

Having an adapter made right now to go from an older Vixen focal reducer to a T2, and having it rotate as well for camera orientation. Will do pictures when Hugh finishes
Reply With Quote
  #33  
Old 05-03-2013, 07:12 PM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Thanks will update soon
Reply With Quote
  #34  
Old 09-03-2013, 09:10 PM
Grendel (Peter)
Registered User

Grendel is offline
 
Join Date: Jan 2011
Location: United Kingdom
Posts: 12
the vixen 1 1/4" back that replaces the .965" back on old japanese scopes is a M36.0 x 1.0 male thread
Grendel
Reply With Quote
  #35  
Old 10-03-2013, 09:14 AM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Thanks put in for next update
Attached Files
File Type: zip Astro_Threads1.3.zip (11.9 KB, 246 views)
Reply With Quote
  #36  
Old 15-09-2013, 03:50 AM
tferrari (Canada)
Registered User

tferrari is offline
 
Join Date: Sep 2013
Location: Edmonton
Posts: 1
We really need to resurrect this thread. This was very helpful.

Also - we never figured out if the 2" filter M48 thread is 0.6TPI or 0.75TPI
Reply With Quote
  #37  
Old 15-09-2013, 09:10 AM
wasyoungonce's Avatar
wasyoungonce (Brendan)
Certified Village Idiot

wasyoungonce is offline
 
Join Date: Jul 2006
Location: Mexico city (Melb), Australia
Posts: 2,336
Thanks, on the spreadsheet I annotated (in a dialogue box) that M48 can be .6 or .75 pitch.
Reply With Quote
  #38  
Old 01-01-2015, 06:02 AM
bobzeq25 (Bob)
Registered User

bobzeq25 is offline
 
Join Date: Jan 2015
Location: USA
Posts: 1
Smile

If you Google M48 0.6 and M48 0.75, you will rapidly come to the conclusion that the latter is correct.
Reply With Quote
  #39  
Old 08-01-2015, 04:25 PM
OzEclipse's Avatar
OzEclipse (Joe Cali)
Registered User

OzEclipse is offline
 
Join Date: Jun 2012
Location: Young Hilltops LGA, Australia
Posts: 1,176
Thread sizes thread now a sticky!

Quote:
Originally Posted by tferrari View Post
We really need to resurrect this thread. This was very helpful.
I asked Mike Salway to make this thread a sticky so it remains easy to find.
Joe
Reply With Quote
  #40  
Old 09-07-2017, 11:45 AM
RobF's Avatar
RobF (Rob)
Mostly harmless...

RobF is offline
 
Join Date: Jul 2008
Location: Brisbane, Australia
Posts: 5,716
Bump. Wish I'd paid more attention to the sticky threads
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 06:52 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Bintel
Advertisement