x1.5 Tele-extender or Barlow

[Merlin66]

Any recommendations for a x1.5 quality Tele-extender or Barlow which would fit a 1.25" set-up.
I'm looking of such an animal to give me a full frame solar image (ASI 1600MM) on the ED80.

[beren]

1.6x though ..... https://www.kyoei-osaka.jp/SHOP/nikon-con-eic16.html

[Merlin66]

Beren,
My Japanese translator didn’t work to well....
Is this a 1.25” fitting with a T thread???

[beren]

1.25" fitting with a twist lock function Ken

https://agenaastro.com/nikon-eic-16-converter-tele-extender-nav-sw.html

[Merlin66]

Beren,
Thanks.
A pretty expensive solution, not sure what the final magnification would be - it does say it's a tele-extender so the back focus (nosepiece-T2, T2 to T2 tilter, T2 to camera) shouldn't make any difference .....
In the meantime I found "in my box of tricks" an Astro Engineering, x1.6 Magni-Max (AC555) Barlow. (I tried this years ago to improve a guide camera set-up)
It's a 1.25" filter thread so needs a bit of ingenuity to get a fit to the T2 tilter.....
Let's see what can be done.

[Merlin66]

Update:
The filter sized AE Barlow...found a 28mm to male T thread adaptor, this then needed a female/ female T thread at one end to mount a 1.25" nosepiece.
Where do you get a female/ female T thread adaptor??
Baader and Agena do one....what other options?????


An inspired thought...the T2 camera adaptors I have (many!!) have the T thread insert - three small grub screws - what about it?
Yes! removing the insert provided an ideal female/ female...
Mounted on the front of the usual ZWO T2 tilter managed (between wind and cloud) to get a solar image. The image size is ideal!
Hmmm OK, but what about quality? resolution?
I'm taking a couple of images to check things out....stay tuned.

[Camelopardalis]

ZWO include a 10mm female-female adapter with their cooled cameras, and some of the larger-chipped non-cooled ones.

[Merlin66]

Dunk,
https://astronomy-imaging-camera.com/product/asi1600mm-cool
"what's in the box?"
Couldn't find it :(



until I realised it was fitted to the front of the camera!


I think, at the moment I have to leave it in place....anyway looks like my cobbled together barlow works.

[Camelopardalis]

:rofl:

Glad you got it sorted, Ken :thumbsup:

How do you find the AE Barlow across the field of the 1600 sensor?

[Merlin66]

http://www.iceinspace.com.au/forum/showthread.php?t=181921


The early results look acceptable.
Next opportunity I'll take some H alpha to check for Newton Rings....