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Hi Mike, So sorry to reply to your most generous help this late. I wasn't successful following your advice and the link re: gimp. I'll try again the tell you my results maybe with screenshots. The data is from another version of Tarantula this time taken with hours perhaps days of exposure (challeng...

Thanks Mike. Though it was a 20' scope, most of the frames were taken either at dusk, very poor seeing etc. Also the Ha set has about half as much exposure as the Oiii - so there was a lot of noise to work around. As usual, I tend to stretch the data to its limits and beyond. So the murkiness as you...

I imaged this remotely via itelescope at the Siding Springs Observatory. Equipment:. Planewave 20', FLI-PL 09000 CCD The exposures are: 13x180 Ha 22x 180 Oiii Not bad for a 20' but the seeing was terrible and many of the frames were during dusk. The moon was almost full. I struggled with noise and w...

Just to add: I've calculated the mosaic coordinates from telescopius and I've set it with a 5% overlap. Is that enough? Default is 10%.

Richard

Hi, I'm in the process of taking some images for the purpose of a mosaic (2x4). It would be my first try. Does anyone have any thoughts? I'm using Linux. Would I stitch the frames together processed or unprocessed? With the former, I'm assuming the processing steps would need to be identical as the ...

Hi Mike,

What I did was blend 50/50 of the two stacks - Ha and Oiii on the linear level. I don't quite understand the logic behind it though. How would ST know which part of the image comprises of Ha and which Oiii? Thanks for all our help.

Richard

Thanks Mike, The blend is 50% Ha and 50% Oiii. I've tried adding this at nb accent at appropriate time, chose the 3rd option but no colour comes through. I can't imagine how StarTools could know what data is on there unless I assign it. Ivo, is it possible to incorporate 2 nb accent files (or inform...

Hi, I am processing a rather nice data set (not my own) of the tarantula nebula. I want to use the lrgb data sets and nbaccent with the Ha AND Oiii files. Is that possible? It looks like I can only add one or the other under this option. I tried blending the 2 files and loading them but how would St...

I took this image remotely via itelescope in Chile. I believe there is roughly 5-6 hours of data here including some Ha. Reducing the stars was very challenging . Thanks for looking. https://flic.kr/p/2n6SriT

Cheers Richard

I had my first go at converting the base64 code from the log to a .png file at motobit.com. I followed instructions and when I tried to load it (open) the mask, I got the message "dimensions differ from already loaded file". What to do here...?

Thanks! Richard