This wonderful dark nebula in Cepheus (Barnard 150 / LDN 1082) is commonly referred to as the “Seahorse Nebula”, but in the orientation of my image, the structure reminds me much more of a mermaid, drifting through the cosmos with her long hair.
Its counterpart is played by an H-Alpha cloud, which already belongs to the adjacent “Flying Bat Nebula” (Sh2-129). To bring out this faint area, I captured 7 hours of Ha and then combined it with 10 hours and 24 minutes of RGB.
Celestron RASA 8 f/2
Celestron Motorfocus
EQ6-R Pro
ZWO ASI 2600 MC Pro (Gain 100, Offset 18, -10°)
TS 2600 MP (Gain 100, Offset 200, -10°)
RGB: 51 × 60″ (5h 51′), 131 × 120″ (4h 22′), 70 × 10″ (11′ 40’′)
Baader H-Alpha Highspeed 3.5nm: 210 × 120″ (7h)
Total: 17h 24′ 40″
Bortle 5 (19.50 SQM)
N.I.N.A., Guiding with ZWO ASI 120MM and PHD2
Astropixelprocessor, Photoshop, Pixinsight