AMATEUR ASTRONOMY PAGES
Javier Gómez Laina                                                
                                                            ngc6946  &  ngc6939   in  Cepheus
              


Object:             ngc6946  -face-on spiral galaxy-   &   ngc6939  -open cluster-

Optics:             TeleVue TV-76  with 1.1x  flattener (f 528mm).
Camera:           Canon 350d  modified (infrared filter removing)
Exposures:       27 x 240"  ;   1h:48' total exposure
ISO:                 800
Date:                2 Oct 2005
Mount:              Home made aluminum fork controled by PicGoto system.
Guiding:           MX716 on
250 f/4.8 Newton

 

Processing:

ImagesPlus:
Darks, Bias & Flat calibration; average combining.
Digital Development Processing (DDP).

Registar:
images aligning

PixInSight:
Dynamic Background Extraction (sky gradient correction)

PhotoShop:
Curves  adjust.
Noise removing with Grain Surgery Plug-in
Unsharp masking