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Looking for a tube supplier for 6in f/12 lens

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#1 photiost

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Posted 12 November 2012 - 02:48 PM

A while back I bought a nice 6in f12 lens in its cell and I am looking for a tube to mount this objective.

I contacted Gary at D&G and after 1.5 years I cannot get a clear answer from him when the tube will be available for delivery ... :question:

Are there any other telescope tube suppiers I could be looking at ?

-

#2 iceblaze

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Posted 12 November 2012 - 03:20 PM

ISTAR makes a 6" f/12, and will probably have a tube that fits what you're looking for

http://istar-optical.com/istar_037.htm

-James

#3 mikey cee

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Posted 12 November 2012 - 04:33 PM

A while back I bought a nice 6in f12 lens in its cell and I am looking for a tube to mount this objective.

I contacted Gary at D&G and after 1.5 years I cannot get a clear answer from him when the tube will be available for delivery ... :question:

Are there any other telescope tube suppiers I could be looking at ?

-

What!? :foreheadslap: Go to Hastings Pipe. web page Click on to "small miscellaneous tubing". It's where a lot of us around CN get our tubing. You may have to modify an adapter to connect your cell to the tube but hey that's ATM for ya'. :grin: Mike

#4 plyscope

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Posted 12 November 2012 - 04:46 PM

Parallax Instruments are tube suppliers.

web page

#5 photiost

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Posted 12 November 2012 - 05:07 PM

Thanks guys. :bow:

I will contact all of them and see what they have.

-

#6 mikey cee

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Posted 12 November 2012 - 06:26 PM

Parallax Instruments are tube suppliers.

web page

Andy I believe you have stated this truism before. I need to inform you that Parallax just drop ships Hastings tubes at one hefty markup in price I might add. ;) No sense getting snockered like that. :grin: Mike

#7 Mirzam

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Posted 12 November 2012 - 07:54 PM

It's a little bit unclear to me whether the OP wants a bare tube or a finished OTA minus the lens that he already has.

Parallax could provide an OTA.

JimC

#8 plyscope

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Posted 12 November 2012 - 08:29 PM

No worries Mike, I think that is what D & G do too.

I make my own thin plywood tubes because it is hard to get aluminium tubing here.

#9 tomharri

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Posted 12 November 2012 - 09:16 PM

Istar tubes are metric.

#10 bremms

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Posted 13 November 2012 - 04:49 PM

Hastings 7" tube. The D&G cell push pull flange slips over perfectly.

#11 photiost

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Posted 13 November 2012 - 11:08 PM

It's a little bit unclear to me whether the OP wants a bare tube or a finished OTA minus the lens that he already has.

Parallax could provide an OTA.

JimC


Actually I do have the lens in a collimatable cell (and dewshield) the AP focuser from their
6in Superplanetary series, and the tube rings to fit a 7in OTA

Paralex said they can provide me with a complete OTA (Tube, countercell, backplate and rings) minus focuser + Objective ...but its going to be well over $1,000 ..

Gloss white or gloss metallic black enamel is available at additional cost of $130.

Shipping to my destination will cost $140 ..
.
So its about $1,300 for a complete OTA - I supply the Objective the Cell and the focuser.
.

#12 photiost

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Posted 13 November 2012 - 11:14 PM

No worries Mike, I think that is what D & G do too.

I make my own thin plywood tubes because it is hard to get aluminium tubing here.


Interesting that you build your own tubes. :cool:

Any plans or images available?
.

#13 plyscope

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Posted 14 November 2012 - 02:10 AM

Here is a thread from last year when I made the 5" f12.

Cloudy Nights ATM web page

Attached Files



#14 johnnyha

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Posted 14 November 2012 - 02:25 AM

Siebert makes tubes.

#15 photiost

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Posted 14 November 2012 - 10:37 AM

Here is a thread from last year when I made the 5" f12.

Cloudy Nights ATM web page


Andy,

This is an awesome project !!

Well done.

#16 plyscope

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Posted 14 November 2012 - 04:00 PM

Thank you.

I know a wooden tube is not for everyone but it works for me. I would still like to try an aluminium one if I find the right materials one day.

Andy

#17 Z28500

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Posted 15 November 2012 - 08:31 AM

Here's some,
I like speedy metals the best but after I got it I turned it on a friends lathe.

http://search.store....?catalog=yhs...

http://www.speedymetals.com

http://www.parallaxi...ubingprice.html

http://racepartsolut...um tubing&sp...

I think the thinnest speedymetals.com has is 1/8" wall even though I turned mine to 0.050"
Perhaps Parallax might be a good one. The only drawback they have is the tube size differences come in 1 inch increments, but a 7 inch tube might work for you - maybe.
Here is a pic of the speedy metals tube after black lacquer (sanded & polished)
Z28500

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#18 Live_Steam_Mad

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Posted 15 November 2012 - 06:25 PM

I am in UK. What are my options for a tube, for making an 8" F6 OTA ? Any European / UK tubing suppliers that sell to the public? I would like it to be light weight and fairly low cost!

Sorry for hijacking the thread but I need the info!

Regards,

Alistair G.

#19 plyscope

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Posted 15 November 2012 - 06:33 PM

You might like to give these guys a call.

Beacon Hill Telescopes

#20 Jim Curry

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Posted 15 November 2012 - 09:13 PM

Here's a few, maybe dupe's:

http://www.metalsdep...&LimAcc=$LimAcc

http://www.metalsdep...&LimAcc=$LimAcc

http://www.aviationm...products_id=253

http://www.velocityair.cc/Tubing.htm

http://www.metricmet...rdalum_tube.htm

Going old school?: http://www.lewisbrass.com/rbt.htm

#21 Jeff B

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Posted 16 November 2012 - 09:54 AM

It's a little bit unclear to me whether the OP wants a bare tube or a finished OTA minus the lens that he already has.

Parallax could provide an OTA.

JimC


Actually I do have the lens in a collimatable cell (and dewshield) the AP focuser from their
6in Superplanetary series, and the tube rings to fit a 7in OTA

Paralex said they can provide me with a complete OTA (Tube, countercell, backplate and rings) minus focuser + Objective ...but its going to be well over $1,000 ..

Gloss white or gloss metallic black enamel is available at additional cost of $130.

Shipping to my destination will cost $140 ..
.
So its about $1,300 for a complete OTA - I supply the Objective the Cell and the focuser.
.


How about some specifics. Is it an AP or D&G lens? Is the focuser an older "cast" focuser with the blue draw tube? If so, is it integral with the back plate or does it have threads to screw it into a back plate?

No matter the answers, I bet the Hastings tube will do just fine, but having the answers will give us a much clearer picture as to how much work is involved. And speaking of pictures, those of the hardware would be great as well.

Designing a tube complete with baffling is straight forward and working with the Hastings tubes is easy really:

http://www.cloudynig...2149930/page...


Jeff

#22 Jim Romanski

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Posted 16 November 2012 - 10:55 AM

If you like wood you can get some pretty long tubes from:
http://www.aitwood.com

Take a look under the Millwork Components at the bottom of the list you'll find Plywood Cylinders, Bases, Caps then pick Columns 96 inches Tall Paint
Probably taller than what you want but they can cut them for you too. In fact you might need to cut it down in order to ship it for a reasonable rate.

I haven't bought anything from them but I've got them bookmarked for when I do a rebuild on the 13.1" scope.






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