01-22-2025, 11:34 AM
Dear All,
I am a new member here, I have been intrested in Celestial Nav for years. I have a bit of free time at the moment, so i thought I would put more effort in.
I have purchased 2 Mark IXa bubble sextants and I am in the process of trying to get one servisable one at the end. I fly across the Atlantic quite often, usually westbound during the day and eastbound at night, I plan to check the INS/GPS?, and develop my skills.
As this august body has great knowledge, I intend to ask a lot of questions.
In the early day of Astro in aircraft, a dome was used, latter on periscope sextant were stuck though a hole in the roof, neither of these are avaliable to me. I just have a limited field of view through the cockpit windows.
This leads to a couple of problems, celestial body selection, I can’t do much about that, and refraction which probably exists and maybe with some expert help I can correct for refraction.
I know domes had refraction corrections.
Any thoughts would be appreciated.
All the best
Tom
I am a new member here, I have been intrested in Celestial Nav for years. I have a bit of free time at the moment, so i thought I would put more effort in.
I have purchased 2 Mark IXa bubble sextants and I am in the process of trying to get one servisable one at the end. I fly across the Atlantic quite often, usually westbound during the day and eastbound at night, I plan to check the INS/GPS?, and develop my skills.
As this august body has great knowledge, I intend to ask a lot of questions.
In the early day of Astro in aircraft, a dome was used, latter on periscope sextant were stuck though a hole in the roof, neither of these are avaliable to me. I just have a limited field of view through the cockpit windows.
This leads to a couple of problems, celestial body selection, I can’t do much about that, and refraction which probably exists and maybe with some expert help I can correct for refraction.
I know domes had refraction corrections.
Any thoughts would be appreciated.
All the best
Tom