Sh2-54, NGC 6604


Another star forming region in constellation Serpens.

It is part of the huge cloud complex which contains also the Eagle Nebula and the Omega Nebula. In my location is is pretty low above horizon.
NGC 6604 is the open star cluster in the lower part of this image and also part of this complex. Stars are still forming in that region and the age of the cluster is only about 6.5 million years, pretty young. Young enough so that the massive hot stars in this region are still alive and deliver the power to heat and ionize the surrounding gas. The whole complex is around 4600 light years from earth.

You see two versions here:
The first one is acquired using a dual narrowband filter, enriched by the stars from version one.
The second one is a pure RGB image, acquired without filters.

Celestron RASA 11 v2
Celestron CGX-L mount
RisingCam ATR3CMOS26000KPA
Optolong UV/IR Cut filter
Bortle 4-5
No moon
RGB: 300x30sec (2h30m)
IDAS NBZ UHS: 73x120sec (2h46m)


Sh2-54 RGB
Sh2-54 RGB