|
Instrument |
Takahashi FSQ-106ED @
f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel. Shown at
3.91 and 9.38 arcsec/pixel. |
|
Mount |
Paramount MyT |
|
Camera |
SBIG STF-8300M Self
Guiding Package w/ mono ST-i, using an AstroDon 5nm Ha filter. |
|
Acquisition Data |
9/18/2016 to 9/19/2016 Chino Valley, AZ... with CCD Commander & CCDSoft. |
|
Exposure |
|
Ha |
360
min. (24 x 15 min. bin 1x |
Click
here for the
color-mapped NarrowBand image
Click here
for the RGB image |
|
Software &
Processing Notes |
-
CCDSoft, CCDStack, PixInsight
and Photoshop CS6.
-
PixInsight
processing includes calibration, registering and stacking, non-linear stretching with HistogramTransformation.
-
PhotoShop for final touch-up.
-
Noiseware 5, a
PhotoShop plug-in.
|
|
Comment |
North is to the
top.
Sh2-171 is about 2700
light-years from Earth, in the constellation Cepheus. The emission
cloud is lit and ionized by the young star cluster Berkeley 59.
The image also
contains six bright and eight dark nebulae as
catalogued by Beverly Lynds. After taking a close look, many of the
entries seem to be just for the sake of making the catalog larger
and have little consequence, if any |
