Heart of the Prawn - IC4628

[MarkInSpace]

Still trying to get a handle on getting the .6 Celestron reducer flattener set up correctly, but here's my latest: IC4628.
Celestron + dreaded .6 reducer flattener
NEQ6 mount
82 x 120s subs
50mm guidescope - I cant get OAG working because of excessive coma (grr - hence my frustration with the reducer flattener)
ASI294MC Pro
L-extreme filter

Any tips on the reducer flattener?
All ideas welcome.
Backfocus is currently at 105mm - I've tried moving it closer and further - this is the best I can get...
What else is there?

[PKay]

Hi Mark, can't help with the technical issues, but I like the framing.

The image has lots of potential once you sort things out.

Well done:thumbsup:

[Sunfish]

It has been a while since I used the SCT with the 0.6 reducer and OAG at the recommended distance. I found the reducer helped with better guide stars for the OAG but I was using the Celestron OAG. A guide scope is not really that good at that focal length. Do you have a Cut filter for your camera. My 183c really requires a UV/IR filter in addition to any other filter

[Sunfish]

Bintel says 85mm backfocus which sounds familiar

https://www.bintel.com.au/product/celestron-reducercorrector-f6-3/?v=322b26af01d5

[Dave882]

I’ve had quite a few fights with star comets using the celestron oag along with edge8 / 0.7x reducer. I’ve found that it is influenced by spacing and gets much worse if I deviate too much from what’s recommended. I’ve hit a bit of a sweet spot now but even when the oag guide stars looked aweful, the star shapes on the image were better thann using the guide scope (even though the guide scope guiding graph was better!)

[multiweb]

Sweet close up. Very nice details. :thumbsup::thumbsup::thumbsup: