Strottner-Drechsler Object 13, lies within the dark and dusty Serpens cloud complex. Discovered in December 2019 by Xavier Strottner and Marcel Drechsler, this 23 arc minute nebula is probably either an emission nebula or Stromgren Sphere possibly ionized by the mag 7.92 star HD 172028. HD 172028 is roughly 2146 light years distance and 2.3 times the diameter of the sun. A lot is going on within the field of view of this image. Many dark nebula lie in this region, along with a beautiful emission nebula in the upper right surrounded by blue reflection clouds called LBN 95. The tiny and bright red 24X18 arc sec planetary nebula Abell 47 can be seen near the right side. Two Herbig-Haro objects # 109 and #108 can be seen within the dark dust cloud on the lower right. How long will it be before new stars emerge from this area? Several other LDN and LBN objects are spread throughout the field of view along with some tiny reflection nebula. The image is a result of 52hrs of exposure time.
Below is an annotated image in which I added some of the more interesting objects.
Below is a close up of the PN Abell 47
And here is a zoom in on the HH objects 109 and 108
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