The Horsehead Nebula, also known as Barnard 33, is instantly recognizable to most people. Here is an image captured at 2800mm over several nights in winter or 2020-2021, mostly in March of 2021. It has Luminance 31 x 60s and 9 x 240s, Hydrogen Alpha 81 x 300s, Oxygen III 37 x 300s and 13 x 600s, Sulfur II 74 x 300s, put together with the Sqrt(Ha) as Red, Sulfur as Green and Oxygen as Blue.
One of the early targets with my MyT mount and C11 @ 2800mm, shot in March 2021. Luminance 240s x 66, Red 240s x 70, Green 240s x 48, Blue 240s x 78, Ha (5nm) 300s x 14, Ha mixed evenly with Red and Green.
Taken with the NP101is at 540mm, this is Ha 38x100s, 2x300s, Sii 38x100s, 3x300s, Oiii 28x100s, 5x300s, combined with an HSO pallet.
