Quote:
Originally Posted by Atmos
FLI PDF or FLI DF2, both are only available on the second hand market but have 3” openings and are stiff.
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Thanks Colin. Haven't won lotto yet.
Quote:
Originally Posted by JA
Hi Marc,
If you want to go to an astrocam on one end of the focuser, especially one with an M42 x 1mm thread, perhaps you could try an M42 Helicoid focuser, which is typically M42 male at one end and M42 female at the other end; however, and it may suit you, other threads are also available.
As an example....
https://www.ebay.com.au/itm/Brass-M4...UAAOSwFSxZ5wux
That is a 17-31mm extension, but you will find shorter and longer examples.
Best
JA |
Thanks mate, actually I googled helicoid focuser today and ended up on
ebay as well. That looks really interesting. I wonder if it would handle a bit of load though.
Here's my AO setup into the Moonlite that I'm trying to get rid of. So remove the whole flange + the red focuser and the AO will be close to flash with the visual back, brings the CCD plane of the QHY9 after the OAG to ~140mm which is the sweet spot I image at right now without the AO.