ASI1600MM cool Flats problem
Posted: Thu Sep 28, 2017 8:50 pm
Hi - hoping someone can help me out here!
Very pleased with my new ASI1600MM cool, but so far I've spent about 2 hours imaging lights and 20 hours trying to do flats. I'm using Sharpcap to do the 16 bit FITS lights, darks and flats, and processing in DSS. I'm letting DSS create a masterflat from 100 FITS taken just in ordinray capture mode, rather than in Flats Capture mode. The main reason is want to change as little of my basic method as possible, and thats the way I've always worked.
I could let SC do the flats and create a master, but as I understand it this will be a FITS file which I cant preview properly - FITS liberator seems to want to stretch and generally monkey around with every image I load, and I cant look at FITS on Photoshop or anytihng alse.
Couple of questions. Can I get SC to do my masterflat as a TIFF rather than as a FITS? then I could simply check it out in PS.
Or, since SC creates FITS files and creates a preview as it goes, can I load the FITS master flat which SC creates within SC to check it before stacking?
The current problem I have is that the TIFF masterflat created in DSS from 100 FITS flats taken in SC, has concentric rings. Not sure I can post an image here, but I've posted one on SGL here:
https://stargazerslounge.com/topic/3006 ... nt-3291965
Really would appreciate any thoughts!
Very pleased with my new ASI1600MM cool, but so far I've spent about 2 hours imaging lights and 20 hours trying to do flats. I'm using Sharpcap to do the 16 bit FITS lights, darks and flats, and processing in DSS. I'm letting DSS create a masterflat from 100 FITS taken just in ordinray capture mode, rather than in Flats Capture mode. The main reason is want to change as little of my basic method as possible, and thats the way I've always worked.
I could let SC do the flats and create a master, but as I understand it this will be a FITS file which I cant preview properly - FITS liberator seems to want to stretch and generally monkey around with every image I load, and I cant look at FITS on Photoshop or anytihng alse.
Couple of questions. Can I get SC to do my masterflat as a TIFF rather than as a FITS? then I could simply check it out in PS.
Or, since SC creates FITS files and creates a preview as it goes, can I load the FITS master flat which SC creates within SC to check it before stacking?
The current problem I have is that the TIFF masterflat created in DSS from 100 FITS flats taken in SC, has concentric rings. Not sure I can post an image here, but I've posted one on SGL here:
https://stargazerslounge.com/topic/3006 ... nt-3291965
Really would appreciate any thoughts!