Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  48 Ori  ·  48 sig Ori  ·  50 Ori)  ·  50 zet Ori  ·  Alnitak  ·  B33  ·  Flame Nebula  ·  HD290812  ·  HD290814  ·  HD290815  ·  HD294272  ·  HD294297  ·  HD294298  ·  HD294300  ·  HD294301  ·  HD294302  ·  HD294303  ·  HD294304  ·  HD37524  ·  HD37525  ·  HD37564  ·  HD37633  ·  HD37641  ·  HD37662  ·  HD37686  ·  HD37699  ·  HD37805  ·  HD37806  ·  HD37903  ·  Horsehead nebula  ·  And 9 more.
Horsehead Nebula, George Chappel
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Horsehead Nebula

Horsehead Nebula, George Chappel
Powered byPixInsight

Horsehead Nebula

Equipment

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Acquisition details

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Description

Finally got around to processing this data that we captured five years ago using our old, well-used, CGEM-DX.  The mount would typically bounce around 1.5" RMS until after a random number of minutes had passed and then she would just take off and we would have to intervene and restart the guiding.  So having tight stars was something we could only dream of back in those days.  Fortunately the SX-694M was, and still is, and awesome camera.  This data was processed with zero calibration frames...no bias, no darks, and no flats.  While I suspect the calibration frames are stashed away on some hard drive somewhere, the subs stacked fine without them and it is time to move on to the next data set.

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Sky plot

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Horsehead Nebula, George Chappel