NGC 891 - more data
Friday, September 11th 2015 - 00:00 (UTC) - focal ratio f/5
3300 frames of 1 second each for L (no filters)
combined with 100 R G and B frames (100 for each) of 4 seconds each (astronomik filters)
full version
equipment used
40 cm Dobson made by Rik ter Horst
Point Grey Blackfly (IMX249 Mono)
40 cm Dobson made by Rik ter Horst
Point Grey Blackfly (IMX249 Mono)