This is 1st shot through SJ dual narrowband filter EX. Unfortunately the sky was a bit hazy and the optics used was a slightly improper. So it might be a little lose the Ha signal due to the blue shift. Originally I planed to use F3.6 scope. But I forgot an adapter for that. So this is a backup system.
SJ DBP-EX + Sigma 105mm Art @F2.2 + Player One Poseidon-C, 30×3′ (gain 0/-15°C）
And my setup.
The new filter is expected to come in stock next week.