Some weeks back, the California and Oregon wildfires were sending smoke through the jetsream to the skies over my backyard near NYC. According to a few news releases, the smoke was flying over at an altitude of 20,000 to 30,000 feet. Even in narrowband such as Ha, the smoke was messing up my long exposures. However, I got clean images when using a filter that is intended for planetary imaging (Astronomik ProPlanet 742). It has been raining or very cloudy for nearly two weeks. I look forward to am hopeful that conditions will be improved on the next clear night.
Nice overview (+1), but it ended too abruptly ... a very brief into to what the center actually contains (e.g. Sgr A*, et al), and some of the recent studies underway (ex: Ghez/GCG close approach of S02), would have been a more satisfying and informative ending.
Some weeks back, the California and Oregon wildfires were sending smoke through the jetsream to the skies over my backyard near NYC. According to a few news releases, the smoke was flying over at an altitude of 20,000 to 30,000 feet.
Even in narrowband such as Ha, the smoke was messing up my long exposures. However, I got clean images when using a filter that is intended for planetary imaging (Astronomik ProPlanet 742). It has been raining or very cloudy for nearly two weeks. I look forward to am hopeful that conditions will be improved on the next clear night.
Nice overview (+1), but it ended too abruptly ... a very brief into to what the center actually contains (e.g. Sgr A*, et al), and some of the recent studies underway (ex: Ghez/GCG close approach of S02), would have been a more satisfying and informative ending.