• Amir

Deep sky exposures get photobombed all the time. In fact, 1 out of 30 of my exposures on average of a satellite trail, usually nothing too spectacular. Once in a while, I get photobombed by terrestrial aircraft, and those tend to be a bit more interesting. Here's one from last night, which I found pretty cool because the beacon light underneath the aircraft lit up mid-way through the frame and exposed the engines with just enough light for it to show up quite well in my 5 minute exposure.

Based on my focal length and position in the sky, it appears this aircraft was at cruising altitude, at least 25,000ft. Now if you look at the whole picture, it become quite interesting. A terrestrial transportation aircraft moving through our planet's atmosphere.. with a massive nebula in the background which harvested the heavy elements used in the aircraft's construction.

  • Amir

The whole nebulous region of Cassiopeia within the Heart Nebula, Soul Nebula and the Fishhead nebula is really stunning to capture, especially at higher focal length to get all those details in the structure. Like the previous 2 captures, this is a region of star formation and it's very active ... well.. at the time that the photons left this region 7,500 years ago.

Centered in the shot are the most prominent grand structures of the Soul Nebula, a very active region in which you can spot brand new stars within the clouds of dust and gas. The left side features some stunning wind-swept (literally) pillars from new stars.. and the right side shows some really interesting formations in which stars are still embedded in the clouds. The darker formations on the right side are in the foreground.. and are backlit by the radiation on the other side.

I shot this for a total of 20.5 hours, with the vast majority in Ha (Hydrogen-alpha) filter. More specs below:

Skywatcher Esprit 120ED Super APO Triplet ZWO ASI1600mm-Cool Orion Atlas EQ-G Guiding telescopes: Orion ST80 Guiding cameras :ZWO ASI224MC Software: Adobe Photoshop 2020 , PixInsight 1.8 , DeepSkyStacker (DSS) Deek Sky Stacker 4.2.0, Starnet++ Chroma SHO 1.25" mounted filters Sesto Senso 2 Electronic Focuser

Chroma HA 3nm - 200x300s Chroma OIII 3nm - 27x250s Chroma SII 3nm - 27x250s

  • Amir

During the months of September and October I used a focal length of 840mm to get some detailed shots of nebulae. Other notable changes: new dew heater package and better cable management after I had a crazy cable snag in the middle of the night, which made the mount scream and probably woke up all the neighbors.

© 2020 by AMIR SALEHI