WRECKING GSO 12" Dobsonian

[erick]

UPDATE 24 Sep 2009 - remaining items withdrawn for a while.


Seeking expressions of interest in parts or all of what is left of my GSO 12" Dob (Bintel branded). :sadeyes: The optics are being built into a truss scope for me and I am looking for good homes for what is left. :thumbsup:

I've attached a couple of photos which give some idea of the state of the scope.

These following articles are on this particular scope and show some of the modifications.

http://www.iceinspace.com.au/41-451-0-0-1-0.html
http://www.iceinspace.com.au/63-400-0-0-1-0.html
http://www.iceinspace.com.au/63-401-0-0-1-0.html

Let's start with what is not available:-
* The Primary mirror
* The Secondary mirror and mirror holder
* The two digital encoders for the Argo Navis
* The footplate mount for the dovetail of GSO finderscope
* Obviously no eyepieces, finderscope etc, come with the scope.

What is (or will be) available:-
* The dob base:
Ebony star laminate and better teflon bearings - beautiful movement. Pretty good condition - not obvious water ingress or swelling. Plenty of extra holes/velcro from cabling etc. that has been removed - cosmetic only, no structural problems. A couple of plates added which reduce the sideways movement of the OTA in the base. The pivot bolt will take an encoder. There is an extra eyepiece holder screwed to the base. There is a stalk for an Argo Navis (I might include the actual Argo Navis bracket). The stalk has been modified since the photos were taken so the head is now on a ball joint and additionally can be raised and lowered easily. Also you will see two rising metal rods supporting a black eyepiece box. Their main purpose is to support the eyepiece box, but additionally, they provide rigidity to the two walls of the base - a common problem with these dob bases. The eyepiece box is also available (but not its heater strap). Here is my thread on the eyepiece box:-
http://www.iceinspace.com.au/forum/showthread.php?t=33500

* The OTA
Standard grey tube OTA with GSO 10:1 focusser. (I will be keeping the electric focusser - if you can see that in the photos.) Fan and fan mounting as described in one article above. 8xAA NiCd rechargeables in battery case and cable to power fan. Altitude bearings have a strip of ebony star laminate fitted to improve Altitude adjustment (better teflon pads on the base as well). The Mirror Cell, including Bobs Knobs and stronger springs, will be available after the mirror has been removed. There are Bobs knobs on the secondary tilt adjustment as well. Lots of flocking of any surfaces which could impinge on the focusser. A tough plastic flocked light shield for the top of the tube.

Obviously, I would love to sell as much as I can together (Someone with a stuffed GSO dob base would really love to have this base and its accessories. Maybe also with the two altitude bearings (trunnions) with their ebony star strip.) Obviously, pickup from Bacchus Marsh - or delivery to Melbourne or nearby - is my preference. But, if it comes to it, I'll separate bits where it makes sense and where a customer so wishes and pack and post smaller items.

PM me with specific your interests (I might have forgotten to mention the item that interests you) and I'll explain, send photos and quote a price. :)

[IanT]

Hi Eric

I am extremely interested in the Dob base. I have wrecked mine with poorly thought out modifications!
Cheers
Ian

[matt]

pm sent last night

[erick]

Responded to PMs from Ian and Matt :)

[erick]

Sale Pending on the base (and maybe the OTA trunnions)

[erick]

PART SOLD

The base has been sold together with the ArgoNavis stalk and the two metal support bars. Also the two trunnions off the OTA

Still for sale:-

* OTA all as one (minus the trunnions), or the various bits.
* The eyepiece box

[leon]

I wonder if there is a jail for telescope vandals. :lol: :lol: :lol:

Leon :thumbsup:

[erick]

Might be a photo finally of me jumping on the OTA to get it compressed and into the recycling bin?

OK back the stream of buyers! :prey:

[erick]

I'm still looking to sell the OTA as one. Will give it several more days to see if that eventuates.

However I have received interest in parts and have possible buyers for the Secondary Bobs Knobs and the 10:1 focusser, if I decide to break up into parts.

Edit - and interest in the Primary Bobs Knobs and Bobs mirror support screws.

Feel free to PM me to get your name to the top of or onto the list for a part you may be interested in.

Order of list is the order in which PMs arrive. If I break up the OTA, I'll announce here and advise how long I'll give for responses to the PMs I will then send out, before I move down the list.

Thanks for the interest :)

[erick]

Confirming what is still for sale:-

* The OTA - missing the primary mirror, the secondary mirror and its holder, the two trunnions.

* The eyepiece box.

Both the items are pickup only (Melbourne area) or maybe delivery within reasonable distance of Bacchus Marsh and Bundoora.

PM me reasonable offers (unreasonable offers will likely be ignored)

[erick]

Thanks for the interest, however I am going to withdraw the remaining items for a while. It looks like I have to break up the OTA into parts so I want to do that, photograph them and offer individually. It will take me a few weeks to organise to do this.

Thanks for your patience. :)