Quote:
Originally Posted by Startrek
Alex,
I’ve been following your experimentation with RGB and Ha using the OSC and Mono trying to combine Chrominance and Narrowband filtered data sets via separate filters.This is extremely difficult but has been done
Just a suggestion, why don’t you try what I do and use a OSC Duoband filter like the L Extreme ( or Antlia golden ) with your 2600MC camera , capture your data set and load it into “Compose” in Startools. Compose can create a Synthetic Luminance channel and correctly weight the R, G, B according to the preferred composite you select , it can also provide a Bi colour composite which I think is similar to what your trying to achieve with adding Ha to a broadband target
There are many choices …
I use the preset L + Synthetic L from R (2xG) B ,R (GB) (GB) Bi Colour from OSC . This works well on most bright nebula like M8 , M16 , M17, M42 and so on ….
Just a thought
Compose is specifically designed for your Mono data sets as well
Best
Martin
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Hi Martin ..you may recall I recently asked about getting a filter for the OSC and your approach was basically what I has in mind although I did not raise that aspect.
I don't talk about all my experiments but the things I have done using the compose tool would surprise folk I expect...I will take a single HA image and give it various contrasts in StarTools for example and create four images each different from the rest then load them in compose in various combinations...and take those multiple results and merge them via layers in Photoshop selecting the various sections of each that present better than the others....I do this sort of thing when I need to rest just to see what can be done....
My future direction will be dictated to a large degree by how I manage the tilt issues (etc etc
) with the RASA as there is a case for giving up using it for narrow band and only using it with OSC...there are times where I feel like replacing it with a 150 mm triplet which really is on the cards...cut back to just one scope even...
AND funny as it sounds I seem to enjoy experimenting and adjusting more than imaging of late...but finally it is all somewhat irrelevant simply because even on what seems like a good clear night the seeing is not what I am used to..the moisture although it seems invisable has stuff jumping around such that decent subs are few and far between such that even 30 seconds exposure is really too long...well that my excuse as they say
I three guide cameras and scopes to set up but at the moment there isn't any point when you add in the need to rebuild the eq5...
I have software that can combine images from different set ups which is too clunky for what I really want to do which is have all scopes with various filters and jobs to do..one detail another nebulosity approach...all I need is more time.
Alex
