Laboratorium Solaris: in search for flat-field

Prominance zoo: detached proms on the left, filament-prom transition at "the top" along with two arches and typical fountain-like prom.

 

To my surprise, I was able to get flatfield work with QHY5L-IIm+Coronado PST combo. The happiness lasted for one session and as soon as I had adjusted camera settings, my master flat-field image had retired. Should I have made after the session with the exactly same camera settings, I wonder?

No hope to check this up in five days... Or more...

 

Taken 18.02.2015 at around 11:00 MSK (UT+3).

QHY5L-IIm via detached business end of Meade 1,25" 2x Barlow lens on Coronado PST riding Celestron CG-4 mount set atop of Vixen SX halfpier over SX tabletop tripod.

Aperture 40 mm

Native focal length 400 mm

Effective focal length ~800 mm (not sure, because Barlow lens was used unconventionally)

Tv = 1,3 ms

Av ~f/20

ISO N/A

Capturing software: FireCapture

Exposures: 23% of 400 frames per panel, 3 panels.

Movies were stacked in Autostakkert2! 2.3.021alpha, resulting images were subjected to Richardson-Lucy deconvolution (Cauchy type PSF, 1,5 units, 10 iterations), stiched in Microsoft ICE and colorized in PS.

Done