NGC 7129 and NGC 7142

All Images Copyright Steve Cannistra

Please click here for a larger version (45%)

RA: 21h 43m 49s
Dec: +65 degrees 59' 38"
PA: plus 25 degrees

NGC 7129 (upper right) is a beautiful star forming nebula, located in a dusty region of the constellation Cepheus.  In the lower left of this image, it is accompanied by the star cluster NGC 7142.  The stars forming within NGC 7129 are relatively young, around 1-2 million years old, and many of them are not easily observed in visible light photographs such as this, but are more evident in Spitzer infrared telescope images.  There are several Herbig-Haro objects in NGC 7129, show in red in the above object, representing streams of hot jets emitted by newly formed stars.  Interestingly, there is evidence of photoluminescence in the center of NGC 7129, represented by the pinkish stripe within the heart of the nebula shown above.  This is not Ha emission, but rather represents heating of dust within this region, which in turn re-emits in a broadband of red visible light.  There are many similarlities between NGC 7129 and the Iris Nebula, including the fact that both are star forming regions within a dusty area of space, both have a dominant reflection (blue) component, and both exhibit photoluminescence.  More information about NGC 7129 may be found in Rob Gendler's website.

Photographic Details:
Dates:  August 24, 25, 26, 2019
Scope:  VC200L at f6.3, on the Takahashi NJP Mount
Autoguider:  SBIG ST-402
Camera:  SBIG ST8300 -15C
Filters:  Baader LRGB
Exposures:  Total exposure 12 hours
Post-processing:  Calibrated, aligned and stacked in Maxim, followed by DDP in ImagesPlus (IP).  Further processing in Photoshop CS (16 bit format)
Please note:  Graphics on this website may not be reproduced without author permission.
Back to Nebulae