Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  12 Cas  ·  HD1010  ·  HD1057  ·  HD1069  ·  HD1142  ·  HD1166  ·  HD1201  ·  HD1239  ·  HD1383  ·  HD1400  ·  HD1544  ·  HD1613  ·  HD1697  ·  HD1743  ·  HD1810  ·  HD1843  ·  HD1917  ·  HD236377  ·  HD2451  ·  HD2535  ·  HD2654  ·  HD2928  ·  HD2973  ·  HD611  ·  HD861  ·  HD962  ·  LBN 592  ·  LBN 593  ·  LDN 1280  ·  LDN 1282  ·  And 7 more.
SH2-173, Joe Matthews
Powered byPixInsight

SH2-173

Revision title: First time I used GraXpert

SH2-173, Joe Matthews
Powered byPixInsight

SH2-173

Revision title: First time I used GraXpert

Equipment

Loading...

Acquisition details

Loading...

Description

Sh2-173 is an emission nebula lying 8,800 light-years from Earth in the constellation Cassiopeia. It is part of the Perseus arm of our Milky Way Galaxy.
following is a Journal article "Unveiling the birth and evolution of the H II region Sh2-173"  --  https://academic.oup.com/mnras/article/394/2/900/1071710


This is my first attempt to image SH2-173, I chose a very damp cool night (We had rain throughout the day) only because the sky was clear by sunset. Guiding was fairly good, but I do think there might have been high thin clouds for the stars in my guide camera looked fainter than usual.  Sh2-173 is very faint and I tried two of the 3  Filters I own, the Optolong L-eNhance and the Optolong L-Ultimate, the L-Ultimate won out.   I tried increasing the gain to 110 vs 100, but I think I should have stayed at 100.  I recently downloaded GraXpert and found it does a better job than SIRIL regarding Background / Gradiant extraction.  This data was a bear to process in SIRIL and if I was more adept at PixInsight I would have used it vs SIRIL.

Last night I did see the need and wished I had a filter wheel vs my Filter Drawer and an Auto Focuser, I would have saved myself about 30 min or so last night.  So, even though I currently have a OSC vs a Mono Camera, I am going to see about purchasing a ZWO filter wheel and ZWO auto focuser.

Comments

Revisions

  • SH2-173, Joe Matthews
    Original
  • Final
    SH2-173, Joe Matthews
    C

C

Title: First time I used GraXpert

Uploaded: ...

Sky plot

Sky plot

Histogram

SH2-173, Joe Matthews