Last night, I captured several subs of the Rosette Nebula (NGC 2237). Most of the subs were in H-alpha. So the O-iii and S-ii data is a bit short in signal. But hopefully, one of the next nights will be clear to add more subs 🙂
The colored image is Ha = red, Oiii = green, Sii = blue. The one in black and white is the pure H-alpha image
Image data:
Date: 2021-03-02
Location: Graz, Austria
Telescope: 102mm f/7 APO with 0.79x flattener (equals to 564mm focal length)
Camera: QHY183C @ -30C
Filters: Baader H-alpha, O-iii, S-ii and IDAS LPS-D2
Guiding: MGEN-II with off-axis guider
Exposures: 20x300s H-alpha, 10x300s O-iii, 5x300s S-ii
