A bicolor narrowband DSLR image. With a Baader 2″ Ha 7nm and a Baader 2″ Oiii 8.5nm filters from Bortle 7-8 area of my home. 6 nights in total for 25 hours of exposure!
GEAR USED
D5300 Ha modded
AVX mount
Orion ED80 with 0.85 reducer
ST80/QHY224C quiding
Sharpcap alignment
IMAGE ACQUISITION DETAILS
52 subs × 900s for Ha (dithered)
49 subs x 900s for Oiii (dithered)
25 flats for each
50 bias for each
12 darks for single Oiii session
TAKEN AT
IMAGE PROCESSING
DSS and Pixinsight
Stacked in DSS, processing in Pixinsight
Same steps for Ha and Oiii channels:
– Debayered strong channel extracted
– DBE
– Deconvolution
– MLT
– Histogram transformation
Star alignment of Oiii with Ha image
LRGB Combine:
L: Ha
Red: Ha
Green: Oiii
Blue: Oiii
SCNR
Curves
Unsharpmask
Star Reduction
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