Still testing and tuning the Epsilon 130, I believe I have a pinched mirror due to over tightening the mirror clips. I also want to mask out the mirror clips to remove the reflections around the brighter stars so still work to do.This is just 3 hours in 180 second subs. I upped the gain to 100 and trialed using dark flats instead of darks. I ended up with a much cleaner stack than before so i might continue with gain 100 and gather some short exposures for the stars.Asi2600 through a Tak Epsilon 130 mounted on an AzEq6Processed in PI, APP and PS.Richard.
As we spoke elsewhere, I know what bugs you about this one - but in truth it is only that big star that one might notice. I meant to ask...."using dark flats instead of darks".....would you not use both?
As we spoke elsewhere, I know what bugs you about this one - but in truth it is only that big star that one might notice. I meant to ask...."using dark flats instead of darks".....would you not use both?
As this sensor is so clean i tried using my master dark flat as a master dark. Flats pre calibrated with master dark flat.
About the stars, I made a little foam mask that now sits between the mirror and mirror clips. It just sits a few mm beyond the clips and essentially masks them out. I do lose some aperture doing this, so it's just a trial. Effectively changes focal ratio from F/3.3 to F/3.44.
B174
by
Richard Sweeney
, on Flickr 
