Melotte 15

• Photographer : Capt. Kang

• DATE :17th-18th Sep 2021 / 23rd Oct 2020

• Place : Seoul (Bortle9) & Ganghwado(Bortle 5)

• Telescope : Rasa 8 (FL 400mm/F2) & ONTC 8inch F4 with Paracorr type 2

• Reducer/Flattener/Coma corrector : Paracorr type 2

• Tripod & Mount : RST 300 / Super mount CYG48RDL with RDL 120 Halfpier

• Guide scope/camera : ZWO OAG L with 174mm Mini

• Camera : 294mm pro (-10 ~ -20 deg)

• Filter : Baader Highspeed & Ultra narrow SHO 36mm

• Exposure : Total : 10 hours

Baader F2 Ultra narrow filter Ha 3.5nm filter : 180s x 71장(2 Bin Gain : 150)

Baader F2 Highspeed filter Ha : 100s x 73장 (2 Bin Gain 120)

Baader F2 Highspeed filter S2 : 100s x 82장 (2 Bin Gain 150)

Baader F2 Highspeed filter O3 : 100s x 72장 (2 Bin Gain 150)

• Software : Pixinsight