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Q2: Atik EFW2 to DMK

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#1 alacane

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Posted 03 November 2012 - 03:47 PM

OK, first q (in CCD forum) was what adapter do I need to attach an Atik EFW2 to a C9.25 SCT. Question for this forum.... what adapter do I need at the other end of the EFW2 to attach it to a DMK 21AU618.AS.

So many questions, so few clear nights.

#2 mikotoy

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Posted 04 November 2012 - 12:57 AM

I have a Flea3, but they both have a cmount connection and applies here.

My setup with Barlow:

diagonal -> barlow -> 2" adapter connected to ATIK -> cmount to t-thread adapter* -> flea3

* http://agenaastro.co...le-adapter.html

I am only using the diagonal until I can find a suitable connection to the visual back. A proper solution would be to get my hands on a Baader Click lock 3.29" to connect the barlow or atik to it directly using the supplied 2" adapter, but they are on back order with no date in sight.

Hopefully someone else with far more experience than I will chime in.

-Hytham

#3 alacane

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Posted 04 November 2012 - 10:16 AM

hey thanks. I'm having trouble connecting the other end also, I don't own a 2" focuser. I hadn't thought about the barlow. Its a 1.25. I wonder if I can put that after the filter wheel? I may have to make my own adapters.

#4 mikotoy

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Posted 04 November 2012 - 01:10 PM

There is an adapter for that too :)

diagonal -> barlow with 1.25" -> 1.25" nose to t-thread* -> atik -> cmount to t-thread adapter -> flea3

http://agenaastro.co...14-2458105.html

I will take pictures of the variety of set ups that I have to show you what I'm doing.

Again the diagonal is not ideal.

#5 alacane

alacane

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Posted 04 November 2012 - 04:26 PM

I've re-purposed my Orion T-Thread Spacer Ring Kit. I've attached the 5mm to the extension tube on the DMK. I've also verified that I can do the same on the other end by inserting the 25mm spacer into the 2" atik EFW to make a threaded connection to the scope. I need to drill some screws to hold the 25mm spacer securely and then fill the small gap with epoxy. I actually think it will be a more secure connection then using a draw tube.

#6 alacane

alacane

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Posted 04 November 2012 - 10:05 PM

Here is my EFW2 to DMK solution:

5mm spacer and extension tube supplied with DMK.

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#7 alacane

alacane

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Posted 04 November 2012 - 10:09 PM

2. Gorilla duck tape cut in half and wrapped very tightly around extension tube.

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#8 alacane

alacane

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Posted 04 November 2012 - 10:11 PM

3. 5mm spacer forced onto tape. Twist it on in the direction of the tape wrap.

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#9 alacane

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Posted 04 November 2012 - 10:11 PM

top view:

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#10 alacane

alacane

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Posted 04 November 2012 - 10:13 PM

4. electrical tape, stretched over the juncture of duck tape...to make it look pretty.

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#11 alacane

alacane

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Posted 04 November 2012 - 10:13 PM

5. DMK on EFW2

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#12 alacane

alacane

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Posted 05 November 2012 - 04:09 AM

first light!!

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