The Cosmic Question mark nebula, NGC 7822
Most of this was shot before and during a near full moon. The only filter that really works effectively then is the Ha filter. The moon emits far less light in Ha and nebula in general are quite bright in Ha. The other filters, specifically the Oxygen filter are completely washed out by the moon light. But I was able to catch some Oiii in the early morning hours of the first session
"The Cosmic Question mark or NGC 7822 is a striking emission nebula located in the northern constellation of Cepheus, approximately 3,000 light-years away from Earth. This region is notable for its young stellar populations and the impressive pillars of dense gas and dust sculpted by intense stellar winds and radiation from newborn stars.
Key Features:
Distance and Size: NGC 7822 is about 3,000 light years away from Earth. The entire complex spans several light years and is part of a massive molecular cloud.
Star Formation: This nebula is known for its vigorous star formation activity, including some of the youngest and most massive stars observed in our galaxy. These stars are typically less than a few million years old.
Structure and Composition: The nebula is comprised of ionized hydrogen gas which glows brightly due to ultraviolet radiation from the massive stars. The complex also features dark dust lanes and bright rimmed clouds, where new stars are currently forming.
Emission Features: NGC 7822 is characterized by its bright emission lines, particularly in hydrogen alpha, which makes it a popular target for astrophotographers and astronomers.
Scientific Interest: The high energy environment of NGC 7822 provides an excellent laboratory for studying the processes of star formation and the effects of massive stars on their surrounding nebulae. Astronomers are particularly interested in the dynamics of the stellar winds and their interaction with the interstellar medium, which can give insights into the life cycle of stars and the evolution of galaxies.
Observation: NGC 7822 can be observed with a range of telescopes, and its prominent features are accessible to both amateur and professional astronomers. The best time to view this nebula is during the fall months when Cepheus is well-placed in the night sky for observers in the Northern Hemisphere.
This nebula, with its active star-forming regions and dynamic structures, represents a fascinating subject for study and observation, illustrating many of the fundamental processes occurring in our galaxy." --synthesized from various sources
Askar ACL200: 200mm f/4
Nikon 70-200mm 200mm f/2.8
2x ZWO ASI533MC Color Camera at -10C
Guided together on a ZWO AM5
41xHa, 19xOiii, 12xSii @600s : 12 hours total integration time
Processed with PixInsight, Ps
The Cosmic Question mark nebula, NGC 7822
Most of this was shot before and during a near full moon. The only filter that really works effectively then is the Ha filter. The moon emits far less light in Ha and nebula in general are quite bright in Ha. The other filters, specifically the Oxygen filter are completely washed out by the moon light. But I was able to catch some Oiii in the early morning hours of the first session
"The Cosmic Question mark or NGC 7822 is a striking emission nebula located in the northern constellation of Cepheus, approximately 3,000 light-years away from Earth. This region is notable for its young stellar populations and the impressive pillars of dense gas and dust sculpted by intense stellar winds and radiation from newborn stars.
Key Features:
Distance and Size: NGC 7822 is about 3,000 light years away from Earth. The entire complex spans several light years and is part of a massive molecular cloud.
Star Formation: This nebula is known for its vigorous star formation activity, including some of the youngest and most massive stars observed in our galaxy. These stars are typically less than a few million years old.
Structure and Composition: The nebula is comprised of ionized hydrogen gas which glows brightly due to ultraviolet radiation from the massive stars. The complex also features dark dust lanes and bright rimmed clouds, where new stars are currently forming.
Emission Features: NGC 7822 is characterized by its bright emission lines, particularly in hydrogen alpha, which makes it a popular target for astrophotographers and astronomers.
Scientific Interest: The high energy environment of NGC 7822 provides an excellent laboratory for studying the processes of star formation and the effects of massive stars on their surrounding nebulae. Astronomers are particularly interested in the dynamics of the stellar winds and their interaction with the interstellar medium, which can give insights into the life cycle of stars and the evolution of galaxies.
Observation: NGC 7822 can be observed with a range of telescopes, and its prominent features are accessible to both amateur and professional astronomers. The best time to view this nebula is during the fall months when Cepheus is well-placed in the night sky for observers in the Northern Hemisphere.
This nebula, with its active star-forming regions and dynamic structures, represents a fascinating subject for study and observation, illustrating many of the fundamental processes occurring in our galaxy." --synthesized from various sources
Askar ACL200: 200mm f/4
Nikon 70-200mm 200mm f/2.8
2x ZWO ASI533MC Color Camera at -10C
Guided together on a ZWO AM5
41xHa, 19xOiii, 12xSii @600s : 12 hours total integration time
Processed with PixInsight, Ps