2022 Michael A. Siniscalchi
Home

What's New

About

Gallery

Odds n Ends
Contact

       SH2-168/SH2-169
        Emission Nebulas in Cassiopeia
           RA:23h 53m 08s  Dec: +59 47' 07" Distance - ~11,500 ly (SH2-168) 4,000 ly (SH2-169)  Size- ~30ly

Location & Date
Backyard, Abbott Observatory- Long Island, NY,  October 2022
Telescope
Orion ED80 F/7 APO, Moonlite focuser, iOptron GEM45G, Pegasus Falcon rotator
Image scale 2.54 arcsec/pixel
Camera
SBIG ST-2000XM
Baader  Ha R G B  filters
CCD temp -10C
Exposures
  Ha- 12 x 10m  Red- 15 x 3m  Green - 15 x 3m  Blue- 120 x 3m  Bin 1x1
Planning & Acquisition
Sequence Generator Pro

Processing
Astro Pixel Processor -  Calibration, Normalize, RGB combine
Adobe PS -  Ha+RGB combine, Color adjustments, Sharpen, JPEG conversion
RC-Astro Star XTerminator, Noise Xterminator


  Sharpless 168 and 169 are both emission nebulas located approximately 11,600 and 4,000 light-years respectively in Cassiopeia.
Sh2-168 is the bright nebula in the center and Sh2-169 is the fainter nebula at the lower left of Sh2-168 and appears to be ionized by the bright star BD+59 2786.
Also seen at the top of Sh2-168 outer edge is dark nebula LDN 1255.


Click on image for full size