NGC 1624 is in Perseus, so it is low in the Eastern sky at nightfall. So low in fact that I had to wait until 7:25PM. The monitor in my observatory was not working so I had to run everything remotely from my home office.
NGC 1624 is fairly dim, so I had to take 4 minute subs. Even then, I could not see any sign of the nebula in each sub.
I used my 11 inch Celestron SCT and ZWO ASI2600 OSC set for -20C, gain of 100. 90mm refractor with ZWO ASI290 used for autoguiding.
SGP4 used to control everything and perform platesolving (using ASTAP). I ended my imaging session round 3:30AM with the bright Moon high in the sky. I then took 50 flats (0.05 seconds).
I had just recently updated my darks/biases library for -20C frames, so I used them in the processing.
Processing was with PixInsight. Most of the standard (for me) techniques were used however I did also use an HDR process to provide greater contrast within the nebula.
NGC 1624 is less than 4 million years old. It includes both the star cluster and nebula and is located in an area of massive star formation.
Along with Sh2-211 it makes up what is now known as the 'Trible Nebulae" named after the little furry creatures introduced in a Star Trek episode.
Roger
- NGC 1624 Master_DBE_SPCC._BXT_NXT_GHS_Curves_MLTsharp_SR_GAME_CurvesBlue_HDR_MLTsharp_Crop.jpg (5.72 MiB) Viewed 4408 times
