NGC 891 from last night
NGC 891 from last night
NGC891 with an Orion SSpro APSC OSC (6MP, 7.8 micron pixels) camera through a 10in F6.3 OTA on a CEM60 using a Starizona .75x SCT reducer for F5 (~1250mm); 14 x 15min subs. I used a 2X drizzle stack, 15 iterations of LR deconvolution and a DDP pass. Acquired, OA guided, temp based focused, preprocessed and processed with Astroart 8 SP3. 5 DFs but no flats; the adaptive gradient removal worked very well.
Re: NGC 891 from last night - 2nd mount and camera
This image stack was taken at the same time as the first image.
Another NGC 891 with an Orion SSpro APSC OSC (6mp 7.8m pixels) CCD camera through a 10in F10 OTA ,on a CEM120, using a Starizona .63x SCT reducer for F7 (~1750mm); guided off axis. I used a 2X drizzle stack, 20 x LR deconvolution and DDP with an adaptive gradient removal to remove some moon glow. Acquired, guided, temp based focused, preprocessed and processed with Astroart 8 SP3. 10 x 1200sec subs = 3.33 hrs. 2nd image is a close up of the image centre.
My ancient SSPro cameras perform best with long subs. Drizzle stacking also acts to supress background grain by smoothing out the pixel structure. ( I used 64bit AA8 SP3 for image acquisition)
Another NGC 891 with an Orion SSpro APSC OSC (6mp 7.8m pixels) CCD camera through a 10in F10 OTA ,on a CEM120, using a Starizona .63x SCT reducer for F7 (~1750mm); guided off axis. I used a 2X drizzle stack, 20 x LR deconvolution and DDP with an adaptive gradient removal to remove some moon glow. Acquired, guided, temp based focused, preprocessed and processed with Astroart 8 SP3. 10 x 1200sec subs = 3.33 hrs. 2nd image is a close up of the image centre.
My ancient SSPro cameras perform best with long subs. Drizzle stacking also acts to supress background grain by smoothing out the pixel structure. ( I used 64bit AA8 SP3 for image acquisition)
