CaK Omega filter - latest trials

[Merlin66]

I've been testing the Omega stack with various elements/ tilt settings and comparing the CWL (central wavelength) and FWHM results with the spectroscope...
The best results so far are with the combo of the Baader CCD-D filter as an ERF, the 394nm 80nm as a semi-blocking filter and the 393.4nm 2A as the final trimming filter.

Conditions haven't been the best - wind, rain and average seeing, combined with a pretty quiet surface.
Using the ED80 and the ASI 1600 as well as the ASI 174 - both with/ without the x2.25 Barlow.....

The attached image was obtained with the ASI 174, x2.25 barlow, processed in AS3!, with curves in Registax6.
Looks promising.

[h0ughy]

Does look OK including the dust moate

[cometcatcher]

I'd say it's working. Some fine detail to be seen.

I would like my white light shots to show a little more detail. Any suggestions on the next step I could take without breaking the bank?

[Merlin66]

Kevin,
Without getting into Ha narrowband etc. the next thing you could try would be to add some filters to your white light set-up.
A continuum or OIII filter will improve contrast. Alternatively a DSO Ha filter will sometimes give steadier seeing allowing more detail to be recorded.

David....yeah saw that - now fixed!!

[cometcatcher]

Thanks. That will give me something to try.