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Wednesday, March 11, 2020

From the Bubble to Cave nebula area

Yesterday I published a panoramic photo of constellation Cepheus, there is new material in upper left corner area of the panorama. I made an individual composition out of this interesting area, dark clouds of gas and dust are shadowing light from energetic emission areas. Bubble Nebula can be seen as tiny pearl like formation at middle left. Near the Bubble lays much large Sharpless 157, thae bright area at lower left. Cave Nebula is located to upper right area of the photo.

From Bubble to Cave
Click for a large image

Image is in mapped colors from a light from the ionized elements, hydrogen = green, sulfur = red and oxygen = blue.

The area of the new image above is marked as a white rectangle.
Large image and information about this Great Mosaic of Cepheus can be seen here,

Technical details

Image is taken with Tokina AT-x camera optics, Apogee Alta U16 astrocamera and Astrodon narrowband filter set. Info about my imaging system can be seen here,
Some older parts of the photo are taken back in 2014 with QHY9 astrocam, Baader narrowband filters and Canon EF 200mm f1.8 camera lens.

Photo is taken from downtown Oulu, Finland. Due to an extensive light pollution I can do only narrowband imaging in my location. 
Total exposure time is around 20 hours.

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